SEC Info - Western Alliance Bancorporation - ‘10-K’ for 12/31/19

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Western Alliance Bancorporation – ‘10-K’ for 12/31/19 – ‘EX-101.LAB’

On: Monday, 3/2/20, at 4:16pm ET · For: 12/31/19 · Accession #: 1212545-20-104 · File #: 1-32550

Previous ‘10-K’: ‘10-K’ on 3/1/19 for 12/31/18 · Next: ‘10-K’ on 2/25/21 for 12/31/20 · Latest: ‘10-K’ on 2/28/24 for 12/31/23 · 11 References:

  As Of               Filer                 Filing    For·On·As Docs:Size

 3/02/20  Western Alliance Bancorporation   10-K       12/31/19  153:37M

Annual Report — Form 10-K — Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   5.08M 
 2: EX-4.1      Instrument Defining the Rights of Security Holders  HTML    110K 
 4: EX-10.12    Material Contract                                   HTML     86K 
 5: EX-10.13    Material Contract                                   HTML     60K 
 6: EX-10.14    Material Contract                                   HTML     88K 
 7: EX-10.15    Material Contract                                   HTML     82K 
 3: EX-10.8     Material Contract                                   HTML    200K 
 8: EX-21.1     Subsidiaries List                                   HTML     49K 
 9: EX-23.1     Consent of Experts or Counsel                       HTML     42K 
10: EX-31.1     Certification -- §302 - SOA'02                      HTML     50K 
11: EX-31.2     Certification -- §302 - SOA'02                      HTML     50K 
12: EX-32       Certification -- §906 - SOA'02                      HTML     46K 
68: R1          Document and Entity Information                     HTML    109K 
123: R2          Consolidated Balance Sheets                         HTML    156K  
105: R3          Consolidated Balance Sheets (Parenthetical)         HTML     54K  
19: R4          Consolidated Statements of Operations               HTML    167K 
67: R5          Consolidated Statements of Comprehensive Income     HTML    100K 
122: R6          Consolidated Statements of Comprehensive Income     HTML     55K  
                (Parenthetical)                                                  
104: R7          Consolidated Statements of Stockholders' Equity     HTML     98K  
18: R8          Consolidated Statements of Cash Flows               HTML    187K 
69: R9          Summary of Significant Accounting Policies          HTML    138K 
151: R10         Investment Securities                               HTML    558K  
100: R11         Loans, Leases and Allowance for Credit Losses       HTML   1.05M  
47: R12         Premises and Equipment (Notes)                      HTML     60K 
61: R13         Leases (Notes)                                      HTML     65K 
152: R14         Goodwill and Other Intangible Assets Goodwill and   HTML     87K  
                Other Intangible Assets (Notes)                                  
101: R15         Deposits (Notes)                                    HTML     70K  
48: R16         Other Borrowings                                    HTML     60K 
62: R17         Qualifying Debt Qualifying Debt (Notes)             HTML     91K 
153: R18         Stockholders' Equity                                HTML     83K  
99: R19         Accumulated Other Comprehensive Income              HTML    118K 
21: R20         Derivatives and Hedging                             HTML    167K 
70: R21         Earnings per Share (Notes)                          HTML     62K 
120: R22         Income Taxes                                        HTML    155K  
102: R23         Commitments and Contingencies                       HTML     86K  
22: R24         Fair Value Accounting                               HTML    417K 
71: R25         Regulatory Capital Requirements                     HTML    111K 
121: R26         Employee Benefit Plan (Notes)                       HTML     97K  
103: R27         Related Parties (Notes)                             HTML     63K  
20: R28         Parent Company (Notes)                              HTML    151K 
72: R29         Segments                                            HTML    569K 
66: R30         Quarterly Financial Data (Notes)                    HTML    132K 
50: R31         Summary of Significant Accounting Policies          HTML    258K 
                (Policies)                                                       
97: R32         Investment Securities (Tables)                      HTML    556K 
150: R33         Loans, Leases and Allowance for Credit Losses       HTML   1.04M  
                (Tables)                                                         
65: R34         Premises and Equipment (Tables)                     HTML     60K 
49: R35         Leases (Tables)                                     HTML     53K 
96: R36         Goodwill and Other Intangible Assets (Tables)       HTML    105K 
149: R37         Deposits (Tables)                                   HTML     66K  
63: R38         Other Borrowings (Tables)                           HTML     53K 
51: R39         Qualifying Debt Junior Subordinated Debt Table      HTML     83K 
                (Tables)                                                         
78: R40         Stockholders' Equity Schedule of Share-based        HTML     64K 
                Compensation Arrangements by Share-based Payment                 
                Award (Tables)                                                   
26: R41         Accumulated Other Comprehensive Income (Tables)     HTML    119K 
119: R42         Derivatives and Hedging (Tables)                    HTML    137K  
134: R43         Earnings per Share (Tables)                         HTML     61K  
77: R44         Income Taxes Provision Current & Deferred Table     HTML     56K 
                (Tables)                                                         
24: R45         Income Taxes Reconciliation between Statutory       HTML     70K 
                Federal Income Tax Rate and Company's Effective                  
                Tax Rate (Tables)                                                
118: R46         Income Taxes Cumulative Tax Effects of Primary      HTML     81K  
                Difference (Tables)                                              
133: R47         Income Taxes Gross Activity of Unrecognized Tax     HTML     60K  
                Benefits Related to Uncertain Tax Positions                      
                (Tables)                                                         
73: R48         Commitments and Contingencies (Tables)              HTML     78K 
27: R49         Fair Value Accounting (Tables)                      HTML    364K 
39: R50         Regulatory Capital Requirements (Tables)            HTML    107K 
52: R51         Employee Benefit Plan (Tables)                      HTML     93K 
147: R52         Related Parties (Tables)                            HTML     55K  
94: R53         Parent Company (Tables)                             HTML    125K 
40: R54         Segments (Tables)                                   HTML    565K 
53: R55         Quarterly Financial Data (Tables)                   HTML    132K 
148: R56         Summary of Significant Accounting Policies -        HTML     46K  
                Additional Information (Detail)                                  
95: R57         Investment Securities - Carrying Amounts and Fair   HTML    229K 
                Values of Investment Securities (Detail)                         
38: R58         Investment Securities - Additional Information      HTML     54K 
                (Detail)                                                         
54: R59         Investment Securities - Unrealized Losses and Fair  HTML    108K 
                Value of Investment Securities in Continuous                     
                Unrealized Loss Position (Detail)                                
124: R60         Investment Securities - Amortized Cost and Fair     HTML    102K  
                Value of Investment Securities by Contractual                    
                Maturities (Detail)                                              
111: R61         Investment Securities - Investment Securities by    HTML    187K  
                Credit Rating Type (Detail)                                      
30: R62         Investment Securities - Investment Securities by    HTML     43K 
                Credit Rating Type Parenthetical (Detail)                        
81: R63         Investment Securities - Gross Gains and (Losses)    HTML     55K 
                on Sales of Investments (Detail)                                 
127: R64         Loans, Leases and Allowance for Credit Losses -     HTML     74K  
                Schedule of Held for Investment Loan Portfolio                   
                Composition of Loans, Leases and Allowance for                   
                Credit Losses (Detail)                                           
114: R65         Loans, Leases and Allowance for Credit Losses -     HTML     96K  
                Contractual Aging of Loan Portfolio by Class of                  
                Loans Including Loans Held for Sale and Excluding                
                Deferred Fees/Costs (Detail)                                     
34: R66         Loans, Leases and Allowance for Credit Losses -     HTML    223K 
                Summary of Recorded Investment in Nonaccrual Loans               
                and Loans Past Due 90 Days Still Accruing Interest               
                by Loan Class (Detail)                                           
84: R67         Loans, Leases and Allowance for Credit Losses -     HTML     93K 
                Additional Information (Detail)                                  
131: R68         Loans, Leases and Allowance for Credit Losses -     HTML     83K  
                Loans by Risk Rating (Detail)                                    
109: R69         Loans, Leases and Allowance for Credit Losses -     HTML     54K  
                Recorded Investment in Loans Classified as                       
                Impaired (Detail)                                                
89: R70         Loans, Leases and Allowance for Credit Losses -     HTML     66K 
                Impaired Loans by Loan Class (Detail)                            
146: R71         Loans, Leases and Allowance for Credit Losses -     HTML     47K  
                Schedule of Average Investment in Impaired Loans                 
                and Income Recognized on Impaired Loans (Detail)                 
58: R72         Loans, Leases and Allowance for Credit Losses -     HTML     69K 
                Average Investment in Impaired Loans by Loan Class               
                (Detail)                                                         
46: R73         Loans, Leases and Allowance for Credit Losses -     HTML     65K 
                Interest Income on Impaired Loans by Loan Class                  
                (Detail)                                                         
86: R74         Loans, Leases and Allowance for Credit Losses -     HTML     55K 
                Tabular Disclosure of Nonperforming Assets                       
                (Detail)                                                         
143: R75         Loans, Leases and Allowance for Credit Losses -     HTML     63K  
                Changes in Accretable Discount for Loans Purchased               
                with Credit Quality Deterioration (Detail)                       
55: R76         Loans, Leases and Allowance for Credit Losses -     HTML     90K 
                Allowances for Credit Losses (Detail)                            
43: R77         Loans, Leases and Allowance for Credit Losses -     HTML    144K 
                Summary of Impairment Method Information Related                 
                to Loans and Allowance for Credit Losses (Detail)                
91: R78         Loans, Leases and Allowance for Credit Losses -     HTML     95K 
                Troubled Debt Restructured Loans by Loan Class                   
                (Detail)                                                         
138: R79         Loans, Leases and Allowance for Credit Losses -     HTML     72K  
                Troubled Debt Restructured Loans by Class for                    
                Which There was Payment Default (Detail)                         
88: R80         Loans, Leases and Allowance for Credit Losses -     HTML     76K 
                Summary of Aggregate Activity in Loans (Detail)                  
145: R81         Loans, Leases and Allowance for Credit Losses Loan  HTML     59K  
                Purchases and Sales (Details) (Details)                          
57: R82         Premises and Equipment (Details)                    HTML     64K 
45: R83         Leases (Details)                                    HTML     84K 
87: R84         Goodwill and Other Intangible Assets (Details)      HTML     64K 
144: R85         Deposits (Details)                                  HTML     78K  
56: R86         Other Borrowings - Company's Borrowings (Detail)    HTML     60K 
44: R87         Other Borrowings - Additional Information (Detail)  HTML     57K 
90: R88         Qualifying Debt Subordinated Debt Details           HTML     60K 
                (Details)                                                        
137: R89         Qualifying Debt Junior Subordinated Debt (Details)  HTML     82K  
125: R90         Qualifying Debt Supplemental Schedule - Adoption    HTML     79K  
                of ASU 2016-01 (Details)                                         
112: R91         Stockholders' Equity - Additional Information       HTML     83K  
                (Detail)                                                         
31: R92         Stockholders' Equity - Summary of Unvested Shares   HTML     78K 
                of Restricted Stock and Changes (Detail)                         
82: R93         Stockholders' Equity Share-Based Compensation -     HTML     64K 
                Stock Options (Details)                                          
126: R94         Stockholders' Equity Treasury shares (Details)      HTML     48K  
113: R95         Stockholders' Equity Common Stock Repurchase        HTML     53K  
                (Details)                                                        
32: R96         Stockholders' Equity Dividend (Details)             HTML     45K 
83: R97         Accumulated Other Comprehensive Income - Summary    HTML     80K 
                of Changes in Accumulated Other Comprehensive                    
                Income (Detail)                                                  
132: R98         Accumulated Other Comprehensive Income - Schedule   HTML     56K  
                of Reclassifications Out of Accumulated Other                    
                Comprehensive Income (Detail)                                    
110: R99         Derivatives and Hedging Fair Value of Derivative    HTML     83K  
                Contracts (Detail)                                               
129: R100        Derivatives and Hedging Largest Exposure to         HTML     57K  
                Individual Counterparty (Detail)                                 
107: R101        Derivatives and Hedging Additional Information      HTML    102K  
                (Detail)                                                         
35: R102        Earnings per Share (Details)                        HTML     70K 
79: R103        Income Taxes Provision for Income Tax (Details)     HTML     58K 
130: R104        Income Taxes Reconciliation between Statutory       HTML     77K  
                Federal Income Tax and Company's Effective Tax                   
                Rate (Details)                                                   
108: R105        Income Taxes - Additional Information (Detail)      HTML     70K  
36: R106        Income Taxes Income Taxes - Cumulative Tax Effects  HTML    101K 
                of Primary Differences (Details)                                 
80: R107        Income Taxes - Low Income Housing Tax Credit        HTML     52K 
                (Details)                                                        
128: R108        Income Taxes Gross Activity of Unrecognized Tax     HTML     69K  
                Benefits Related to Uncertain Tax Positions                      
                (Details)                                                        
115: R109        Commitments and Contingencies - Additional          HTML     59K  
                Information (Detail)                                             
93: R110        Commitments and Contingencies - Summary of          HTML     66K 
                Contractual Amounts for Unfunded Commitments and                 
                Letters of Credit (Detail)                                       
140: R111        Commitments and Contingencies - Contractual         HTML     63K  
                Commitments for Lines and Letters of Credit by                   
                Maturity (Detail)                                                
60: R112        Commitments and Contingencies Concentration of      HTML     43K 
                Lending Activities (Details)                                     
42: R113        Fair Value Accounting - Gains and Losses from Fair  HTML     50K 
                Value Changes Included in Consolidated Statement                 
                of Operations (Detail)                                           
92: R114        Fair Value Accounting - Fair Value of Assets and    HTML    157K 
                Liabilities (Detail)                                             
139: R115        Fair Value Accounting - Change in Level 3           HTML    109K  
                Liabilities Measured at Fair Value on Recurring                  
                Basis (Detail)                                                   
59: R116        Fair Value Accounting - Assets Measured at Fair     HTML     81K 
                Value on Nonrecurring Basis (Detail)                             
41: R117        Fair Value Accounting - Estimated Fair Value of     HTML    157K 
                Financial Instruments (Detail)                                   
85: R118        Fair Value Accounting - Additional Information      HTML     84K 
                (Detail)                                                         
141: R119        Fair Value Accounting Additional Details (Details)  HTML     44K  
75: R120        Regulatory Capital Requirements - Summary of        HTML     91K 
                Actual Capital Amount and Ratio (Detail)                         
29: R121        Employee Benefit Plan (Details)                     HTML     60K 
117: R122        Employee Benefit Plan Accumulated Benefit           HTML     64K  
                Obligation and Funded Status of SERP (Details)                   
136: R123        Employee Benefit Plan Net Periodic Benefit Cost     HTML     66K  
                (Details)                                                        
74: R124        Related Parties (Details)                           HTML     66K 
28: R125        Parent Company Parent Company Balance Sheet         HTML     86K 
                (Details)                                                        
116: R126        Parent Company Parent Company Condensed Income      HTML     87K  
                Statement (Details)                                              
135: R127        Parent Company Parent Company Cash Flows (Details)  HTML    110K  
76: R128        Segments - Operating Segment Information (Detail)   HTML    398K 
23: R129        Revenue from Contracts with Customers (Details)     HTML     63K 
37: R130        Quarterly Financial Data (Details)                  HTML     92K 
64: R9999       Uncategorized Items - wal1231201910-k.htm           HTML     56K 
33: XML         IDEA XML File -- Filing Summary                      XML    289K 
25: XML         XBRL Instance -- wal1231201910-k_htm                 XML  11.81M 
142: EXCEL       IDEA Workbook of Financial Reports                  XLSX    235K  
14: EX-101.CAL  XBRL Calculations -- wal-20191231_cal                XML    451K 
15: EX-101.DEF  XBRL Definitions -- wal-20191231_def                 XML   2.39M 
16: EX-101.LAB  XBRL Labels -- wal-20191231_lab                      XML   3.37M 
17: EX-101.PRE  XBRL Presentations -- wal-20191231_pre               XML   2.81M 
13: EX-101.SCH  XBRL Schema -- wal-20191231                          XSD    341K 
106: JSON        XBRL Instance as JSON Data -- MetaLinks              712±  1.18M  
98: ZIP         XBRL Zipped Folder -- 0001212545-20-000104-xbrl      Zip    960K

‘EX-101.LAB’ — XBRL Labels — wal-20191231_lab

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<link:label id="lab_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recorded Investment in Loans Classified as Impaired </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivables [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivablesTableTextBlock" xlink:label="loc_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD" xlink:to="lab_us-gaap_ImpairedFinancingReceivablesTableTextBlock_136191466D5260D5993935809B1554CD" xlink:type="arc"/>

<link:label id="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289_terseLabel_en-US" xlink:label="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired Loans by Loan Class </link:label>

<link:label id="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289_label_en-US" xlink:label="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule Of Impaired Loan By Class Table [Text Block] </link:label>

<link:label id="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289_documentation_en-US" xlink:label="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Schedule of impaired loan by class. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ScheduleOfImpairedLoanByClassTableTextBlock" xlink:label="loc_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289" xlink:to="lab_wal_ScheduleOfImpairedLoanByClassTableTextBlock_5E211E710DDBF347CC5D35809B167289" xlink:type="arc"/>

<link:label id="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA_terseLabel_en-US" xlink:label="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Average Investment in Impaired Loans by Loan Class </link:label>

<link:label id="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA_label_en-US" xlink:label="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule Of Average Investment In Impaired Loan By Class Table [Text Block] </link:label>

<link:label id="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA_documentation_en-US" xlink:label="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Schedule of average investment in impaired loan by class. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock" xlink:label="loc_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA" xlink:to="lab_wal_ScheduleOfAverageInvestmentInImpairedLoanByClassTableTextBlock_E287FE8A1D27101308B235809B1648FA" xlink:type="arc"/>

<link:label id="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4_terseLabel_en-US" xlink:label="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest Income on Impaired Loans by Loan Class </link:label>

<link:label id="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4_label_en-US" xlink:label="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule Of Interest Income On Impaired Loan By Class Table [Text Block] </link:label>

<link:label id="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4_documentation_en-US" xlink:label="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Schedule of interest income on impaired loan by class. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock" xlink:label="loc_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4" xlink:to="lab_wal_ScheduleOfInterestIncomeOnImpairedLoanByClassTableTextBlock_E8003923E089C01E8D3F35809B16F9E4" xlink:type="arc"/>

<link:label id="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B_terseLabel_en-US" xlink:label="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Tabular Disclosure of Nonperforming Assets </link:label>

<link:label id="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B_label_en-US" xlink:label="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non Performing Assets Table [Text Block] </link:label>

<link:label id="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B_documentation_en-US" xlink:label="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Nonperforming assets. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NonPerformingAssetsTableTextBlock" xlink:label="loc_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B" xlink:to="lab_wal_NonPerformingAssetsTableTextBlock_9C81A72410CFB27612CA35809B17DE5B" xlink:type="arc"/>

<link:label id="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435_terseLabel_en-US" xlink:label="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accretable Yield Table </link:label>

<link:label id="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435_label_en-US" xlink:label="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accretable Yield Table [Text Block] </link:label>

<link:label id="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435_documentation_en-US" xlink:label="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accretable yield. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_AccretableYieldTableTextBlock" xlink:label="loc_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435" xlink:to="lab_wal_AccretableYieldTableTextBlock_E488AAA1B6823311DC9A35809B17C435" xlink:type="arc"/>

<link:label id="lab_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2_terseLabel_en-US" xlink:label="lab_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Allowances for Credit Losses </link:label>

<link:label id="lab_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2_label_en-US" xlink:label="lab_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Loss [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:label="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2" xlink:to="lab_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock_3209A045F77C5DE1A82835809B17A5A2" xlink:type="arc"/>

<link:label id="lab_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8_terseLabel_en-US" xlink:label="lab_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Troubled Debt Restructured Loans by Loan Class </link:label>

<link:label id="lab_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8_label_en-US" xlink:label="lab_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Troubled Debt Restructuring [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock" xlink:label="loc_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8" xlink:to="lab_us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_947F3DEDECEF9E355DD935809B1798C8" xlink:type="arc"/>

<link:label id="lab_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9_terseLabel_en-US" xlink:label="lab_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Troubled Debt Restructured Loans by Class for Which There was a Payment Default </link:label>

<link:label id="lab_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9_label_en-US" xlink:label="lab_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Troubled Debt Restructured Loans By Class For Payment Default Table [Text Block] </link:label>

<link:label id="lab_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9_documentation_en-US" xlink:label="lab_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Troubled debt restructured loans by class for which payment was default. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock" xlink:label="loc_wal_TroubledDebtRestructuredLoansByClassForPaymentDefaultTableTextBlock_40C1991748A123BCF5B635809B18D5B9" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_C27F997107224F1D02DD83D24D5270C5_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_C27F997107224F1D02DD83D24D5270C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Comprehensive Income [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_C27F997107224F1D02DD83D24D5270C5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_C27F997107224F1D02DD83D24D5270C5" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_C27F997107224F1D02DD83D24D5270C5" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_469F28EB694DFECECA6183D24D529D48_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_469F28EB694DFECECA6183D24D529D48" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss) [Table] </link:label>

<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_469F28EB694DFECECA6183D24D529D48_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_469F28EB694DFECECA6183D24D529D48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss) [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_469F28EB694DFECECA6183D24D529D48" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RetirementPlanTypeAxis_A68B6CAC01FF20C6976A83D24D52660D_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_A68B6CAC01FF20C6976A83D24D52660D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Axis] </link:label>

<link:label id="lab_us-gaap_RetirementPlanTypeAxis_A68B6CAC01FF20C6976A83D24D52660D_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_A68B6CAC01FF20C6976A83D24D52660D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_A68B6CAC01FF20C6976A83D24D52660D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RetirementPlanTypeDomain_71B7C8DADB2D4BF0C71E83D24D5205AD_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_71B7C8DADB2D4BF0C71E83D24D5205AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>

<link:label id="lab_us-gaap_RetirementPlanTypeDomain_71B7C8DADB2D4BF0C71E83D24D5205AD_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_71B7C8DADB2D4BF0C71E83D24D5205AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_71B7C8DADB2D4BF0C71E83D24D5205AD" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_FFBB57A4346AFE5D745283D24D52C621_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_FFBB57A4346AFE5D745283D24D52C621" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Supplemental Employee Retirement Plan [Member] </link:label>

<link:label id="lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_FFBB57A4346AFE5D745283D24D52C621_label_en-US" xlink:label="lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_FFBB57A4346AFE5D745283D24D52C621" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Employee Retirement Plan [Member] </link:label>

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<link:label id="lab_us-gaap_StatementEquityComponentsAxis_9DA6866BDD862BA8B57983D24D52B2C9_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_9DA6866BDD862BA8B57983D24D52B2C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>

<link:label id="lab_us-gaap_StatementEquityComponentsAxis_9DA6866BDD862BA8B57983D24D52B2C9_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_9DA6866BDD862BA8B57983D24D52B2C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>

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<link:label id="lab_us-gaap_EquityComponentDomain_F6E4F2628CD159EA09D983D24D52AEBC_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_F6E4F2628CD159EA09D983D24D52AEBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>

<link:label id="lab_us-gaap_EquityComponentDomain_F6E4F2628CD159EA09D983D24D52AEBC_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_F6E4F2628CD159EA09D983D24D52AEBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F6E4F2628CD159EA09D983D24D52AEBC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_0B438B3E13F136AA494083D24D52D8D4_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_0B438B3E13F136AA494083D24D52D8D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unrealized holding gains (losses) on AFS </link:label>

<link:label id="lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_0B438B3E13F136AA494083D24D52D8D4_label_en-US" xlink:label="lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_0B438B3E13F136AA494083D24D52D8D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_0B438B3E13F136AA494083D24D52D8D4" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member] </link:label>

<link:label id="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1_label_en-US" xlink:label="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember" xlink:label="loc_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1" xlink:to="lab_us-gaap_AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember_3C3F30932CF2FE8C56BB83D24D527FD1" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_7B1CF1E6ED429A783A1F83D24D52887D_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_7B1CF1E6ED429A783A1F83D24D52887D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impairment loss on securities </link:label>

<link:label id="lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_7B1CF1E6ED429A783A1F83D24D52887D_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_7B1CF1E6ED429A783A1F83D24D52887D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherThanTemporaryImpairmentMember" xlink:label="loc_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_7B1CF1E6ED429A783A1F83D24D52887D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ED5242E8F706111838B083D24D61EB4E_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ED5242E8F706111838B083D24D61EB4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss) [Line Items] </link:label>

<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ED5242E8F706111838B083D24D61EB4E_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ED5242E8F706111838B083D24D61EB4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss) [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_ED5242E8F706111838B083D24D61EB4E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, Tax </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, Tax </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax_C39ACF6645C943E5217683D24D6178F6" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), before Reclassifications, Net of Tax </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), before Reclassifications, Net of Tax </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_18A666FCC0F906EFF81883D24D61A46F" xlink:type="arc"/>

<link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_486DC78AFEA2EECA39BC83D24D6189CF_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_486DC78AFEA2EECA39BC83D24D6189CF" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax </link:label>

<link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_486DC78AFEA2EECA39BC83D24D6189CF_label_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_486DC78AFEA2EECA39BC83D24D6189CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_486DC78AFEA2EECA39BC83D24D6189CF" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetIncomeLoss_E322587DCDDF04873B1B83D24D61CE47_verboseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_E322587DCDDF04873B1B83D24D61CE47" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net income </link:label>

<link:label id="lab_us-gaap_NetIncomeLoss_E322587DCDDF04873B1B83D24D61CE47_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_E322587DCDDF04873B1B83D24D61CE47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_E322587DCDDF04873B1B83D24D61CE47" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive income (loss), net: </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Net of Tax [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_C3E5C4A70B05EDC5004483D24D610E14" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unrealized gain (loss) on AFS securities, net of tax effect of $(23,205), $13,354, and $(3,973), respectively </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D" xlink:to="lab_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_F129A295D521AA5B722B83D24D61EA1D" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_1CC2C72639D8C72B481983D24D61BEE0_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_1CC2C72639D8C72B481983D24D61BEE0" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Unrealized (loss) gain on SERP, net of tax effect of $138, $24, and $(79), respectively </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_1CC2C72639D8C72B481983D24D61BEE0_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_1CC2C72639D8C72B481983D24D61BEE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax </link:label>

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<link:label id="lab_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0" xlink:to="lab_us-gaap_DebtInstrumentAxis_7B647694D5013036A7F03B5CD1DA13A0" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentNameDomain_775BBF86A3BCF1E3DE683B5CD1DABAC6_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_775BBF86A3BCF1E3DE683B5CD1DABAC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentNameDomain_775BBF86A3BCF1E3DE683B5CD1DABAC6_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_775BBF86A3BCF1E3DE683B5CD1DABAC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_775BBF86A3BCF1E3DE683B5CD1DABAC6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Rate [Axis] </link:label>

<link:label id="lab_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Rate [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D" xlink:to="lab_us-gaap_VariableRateAxis_CAF8ECEA47E78048EBE23B5CD1DAFC7D" xlink:type="arc"/>

<link:label id="lab_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Rate [Domain] </link:label>

<link:label id="lab_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Rate [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030" xlink:to="lab_us-gaap_VariableRateDomain_C0EE6449ECAE0E78A3EA3B5CD1DA8030" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Redemption, Period [Axis] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Redemption, Period [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_0A606008E44363F5A4633B5CD1DBD364" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Redemption, Period [Domain] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Redemption, Period [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4B6C4A2F04707040E7003B5CD1DB3D5F" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>

<link:label id="lab_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0" xlink:to="lab_us-gaap_DebtInstrumentLineItems_F30657038254BA8FA8D33B5CD1DB84C0" xlink:type="arc"/>

<link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Remaining Borrowing Capacity </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Remaining Borrowing Capacity </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644" xlink:to="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_5FD475166110666149A23B5CD1DB8644" xlink:type="arc"/>

<link:label id="lab_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short Term </link:label>

<link:label id="lab_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96_label_en-US" xlink:label="lab_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowingsAbstract" xlink:label="loc_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96" xlink:to="lab_us-gaap_ShortTermBorrowingsAbstract_D52F2511FB27F45D107D3B5CD1DCBD96" xlink:type="arc"/>

<link:label id="lab_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C_terseLabel_en-US" xlink:label="lab_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revolving line of credit </link:label>

<link:label id="lab_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C_label_en-US" xlink:label="lab_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit, Current </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LinesOfCreditCurrent" xlink:label="loc_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C" xlink:to="lab_us-gaap_LinesOfCreditCurrent_7C7EF31B01EAAEB534373B5CD1DCB52C" xlink:type="arc"/>

<link:label id="lab_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C_terseLabel_en-US" xlink:label="lab_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Federal Funds Purchased </link:label>

<link:label id="lab_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C_label_en-US" xlink:label="lab_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Federal Funds Purchased </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalFundsPurchased" xlink:label="loc_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C" xlink:to="lab_us-gaap_FederalFundsPurchased_F47DF5CC1C0E0581FDC83B5CD1DCD35C" xlink:type="arc"/>

<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7_terseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> FHLB advances </link:label>

<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7_label_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7" xlink:to="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_3928E7B6B0754A1B38A93B5CD1DC37D7" xlink:type="arc"/>

<link:label id="lab_us-gaap_ShortTermBorrowings_3F308788A476CD0BCDEE3B5CD1DC5978_totalLabel_en-US" xlink:label="lab_us-gaap_ShortTermBorrowings_3F308788A476CD0BCDEE3B5CD1DC5978" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Short-term Debt </link:label>

<link:label id="lab_us-gaap_ShortTermBorrowings_3F308788A476CD0BCDEE3B5CD1DC5978_label_en-US" xlink:label="lab_us-gaap_ShortTermBorrowings_3F308788A476CD0BCDEE3B5CD1DC5978" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_3F308788A476CD0BCDEE3B5CD1DC5978" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_6E3E6389061AE8C4A7113B5CD1DCCB99_terseLabel_en-US" xlink:label="lab_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_6E3E6389061AE8C4A7113B5CD1DCCB99" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Customer repurchase agreements </link:label>

<link:label id="lab_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_6E3E6389061AE8C4A7113B5CD1DCCB99_label_en-US" xlink:label="lab_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_6E3E6389061AE8C4A7113B5CD1DCCB99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Securities Sold under Agreements to Repurchase </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SecuritiesSoldUnderAgreementsToRepurchase" xlink:label="loc_us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_6E3E6389061AE8C4A7113B5CD1DCCB99" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherLongtermDebtCurrentAndNoncurrentAbstract_E58D9E8AAF847EBEDAF03B5CD1DD3C4B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLongtermDebtCurrentAndNoncurrentAbstract_E58D9E8AAF847EBEDAF03B5CD1DD3C4B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long Term </link:label>

<link:label id="lab_us-gaap_OtherLongtermDebtCurrentAndNoncurrentAbstract_E58D9E8AAF847EBEDAF03B5CD1DD3C4B_label_en-US" xlink:label="lab_us-gaap_OtherLongtermDebtCurrentAndNoncurrentAbstract_E58D9E8AAF847EBEDAF03B5CD1DD3C4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Long-term Debt [Abstract] </link:label>

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<link:label id="lab_wal_LargestExposureToIndividualCounterpartyTableTextBlock_DA7D60989207E99502E5F248768EB4AD_terseLabel_en-US" xlink:label="lab_wal_LargestExposureToIndividualCounterpartyTableTextBlock_DA7D60989207E99502E5F248768EB4AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Largest Exposure To Individual Counterparty </link:label>

<link:label id="lab_wal_LargestExposureToIndividualCounterpartyTableTextBlock_DA7D60989207E99502E5F248768EB4AD_label_en-US" xlink:label="lab_wal_LargestExposureToIndividualCounterpartyTableTextBlock_DA7D60989207E99502E5F248768EB4AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Largest Exposure To Individual Counterparty Table [Text Block] </link:label>

<link:label id="lab_wal_LargestExposureToIndividualCounterpartyTableTextBlock_DA7D60989207E99502E5F248768EB4AD_documentation_en-US" xlink:label="lab_wal_LargestExposureToIndividualCounterpartyTableTextBlock_DA7D60989207E99502E5F248768EB4AD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Largest exposure to individual counterparty. </link:label>

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<link:label id="lab_wal_LoansHFSAbstract_1313A9B09FFDAF481BD46448DF67D93F_label_en-US" xlink:label="lab_wal_LoansHFSAbstract_1313A9B09FFDAF481BD46448DF67D93F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans HFS [Abstract] </link:label>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableDisclosureTable_F8EACBD275937DC3DAC06448F1611D00_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDisclosureTable_F8EACBD275937DC3DAC06448F1611D00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Disclosure [Table] </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableDisclosureTable_F8EACBD275937DC3DAC06448F1611D00_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDisclosureTable_F8EACBD275937DC3DAC06448F1611D00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Disclosure [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableDisclosureTable" xlink:label="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_F8EACBD275937DC3DAC06448F1611D00" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivablePortfolioSegmentAxis_0AA1FB938D1A78B18E6A6448F1684D33_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablePortfolioSegmentAxis_0AA1FB938D1A78B18E6A6448F1684D33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable Portfolio Segment [Axis] </link:label>

<link:label id="lab_us-gaap_FinancingReceivablePortfolioSegmentAxis_0AA1FB938D1A78B18E6A6448F1684D33_label_en-US" xlink:label="lab_us-gaap_FinancingReceivablePortfolioSegmentAxis_0AA1FB938D1A78B18E6A6448F1684D33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable Portfolio Segment [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivablePortfolioSegmentAxis" xlink:label="loc_us-gaap_FinancingReceivablePortfolioSegmentAxis_0AA1FB938D1A78B18E6A6448F1684D33" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivablePortfolioSegmentDomain_6058E457CF2510D1635D6448F16CE400_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablePortfolioSegmentDomain_6058E457CF2510D1635D6448F16CE400" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable Portfolio Segment [Domain] </link:label>

<link:label id="lab_us-gaap_FinancingReceivablePortfolioSegmentDomain_6058E457CF2510D1635D6448F16CE400_label_en-US" xlink:label="lab_us-gaap_FinancingReceivablePortfolioSegmentDomain_6058E457CF2510D1635D6448F16CE400" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable Portfolio Segment [Domain] </link:label>

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<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_9E2FECF02C6F3422777B6448F173E95A_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_9E2FECF02C6F3422777B6448F173E95A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Financing Receivable [Axis] </link:label>

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<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9AC24CCC063EEC41CF1F6448F175E000_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9AC24CCC063EEC41CF1F6448F175E000" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Financing Receivable [Domain] </link:label>

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<link:label id="lab_wal_CommercialAndIndustrialMember_977D0FC22E3991B6C334645B9E70B1B2_terseLabel_en-US" xlink:label="lab_wal_CommercialAndIndustrialMember_977D0FC22E3991B6C334645B9E70B1B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial And Industrial [Member] </link:label>

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<link:label id="lab_wal_CommercialAndIndustrialMember_977D0FC22E3991B6C334645B9E70B1B2_documentation_en-US" xlink:label="lab_wal_CommercialAndIndustrialMember_977D0FC22E3991B6C334645B9E70B1B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Commercial and industrial. </link:label>

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<link:label id="lab_wal_CommercialRealEstateNonOwnerOccupiedMember_A86C850D6A8EC4A1441F645973AEE400_terseLabel_en-US" xlink:label="lab_wal_CommercialRealEstateNonOwnerOccupiedMember_A86C850D6A8EC4A1441F645973AEE400" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-owner occupied [Member] </link:label>

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<link:label id="lab_wal_ConstructionAndLandDevelopmentMember_25E6141AB845E3820AC3645A1C4C5069_terseLabel_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentMember_25E6141AB845E3820AC3645A1C4C5069" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Construction and land development [Member] </link:label>

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<link:label id="lab_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3_terseLabel_en-US" xlink:label="lab_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Residential real estate [Member] </link:label>

<link:label id="lab_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3_label_en-US" xlink:label="lab_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Residential Real Estate [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="loc_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3" xlink:to="lab_us-gaap_ResidentialRealEstateMember_387CC78FE7E9FDF82BC9645AD3FF27B3" xlink:type="arc"/>

<link:label id="lab_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateral [Axis] </link:label>

<link:label id="lab_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA_label_en-US" xlink:label="lab_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Collateral [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CollateralAxis" xlink:label="loc_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA" xlink:to="lab_us-gaap_CollateralAxis_CDFA04ED98A774E597246448F177F5DA" xlink:type="arc"/>

<link:label id="lab_us-gaap_CollateralDomain_D0F8C23A74A6C2E9ABDD6448F179501F_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralDomain_D0F8C23A74A6C2E9ABDD6448F179501F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateral [Domain] </link:label>

<link:label id="lab_us-gaap_CollateralDomain_D0F8C23A74A6C2E9ABDD6448F179501F_label_en-US" xlink:label="lab_us-gaap_CollateralDomain_D0F8C23A74A6C2E9ABDD6448F179501F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Collateral [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CollateralDomain" xlink:label="loc_us-gaap_CollateralDomain_D0F8C23A74A6C2E9ABDD6448F179501F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Type of Borrower [Axis] </link:label>

<link:label id="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F_label_en-US" xlink:label="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Type of Borrower [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis" xlink:label="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F" xlink:to="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerAxis_D6EFC80F34DDCF7AA24D6448F181C93F" xlink:type="arc"/>

<link:label id="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_FEB8D88F40D3826042966448F183B042_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_FEB8D88F40D3826042966448F183B042" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Financing Receivable, Type of Borrower [Domain] </link:label>

<link:label id="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_FEB8D88F40D3826042966448F183B042_label_en-US" xlink:label="lab_us-gaap_ClassOfFinancingReceivableTypeOfBorrowerDomain_FEB8D88F40D3826042966448F183B042" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Financing Receivable, Type of Borrower [Domain] </link:label>

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<link:label id="lab_us-gaap_EquitySecuritiesByIndustryAxis_25474D8704743D4021E86448F18816D0_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesByIndustryAxis_25474D8704743D4021E86448F18816D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Industry Sector [Axis] </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesByIndustryAxis_25474D8704743D4021E86448F18816D0_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesByIndustryAxis_25474D8704743D4021E86448F18816D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Industry Sector [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesByIndustryAxis" xlink:label="loc_us-gaap_EquitySecuritiesByIndustryAxis_25474D8704743D4021E86448F18816D0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EquitySecuritiesIndustryMember_7F13A67812F2F3EC06126448F18A460F_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesIndustryMember_7F13A67812F2F3EC06126448F18A460F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Industry Sector [Domain] </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesIndustryMember_7F13A67812F2F3EC06126448F18A460F_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesIndustryMember_7F13A67812F2F3EC06126448F18A460F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Industry Sector [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesIndustryMember" xlink:label="loc_us-gaap_EquitySecuritiesIndustryMember_7F13A67812F2F3EC06126448F18A460F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_GeographicDistributionAxis_8305C081B44ACF199E3E6448F18A73E1_terseLabel_en-US" xlink:label="lab_us-gaap_GeographicDistributionAxis_8305C081B44ACF199E3E6448F18A73E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographic Distribution [Axis] </link:label>

<link:label id="lab_us-gaap_GeographicDistributionAxis_8305C081B44ACF199E3E6448F18A73E1_label_en-US" xlink:label="lab_us-gaap_GeographicDistributionAxis_8305C081B44ACF199E3E6448F18A73E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographic Distribution [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionAxis" xlink:label="loc_us-gaap_GeographicDistributionAxis_8305C081B44ACF199E3E6448F18A73E1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_GeographicDistributionDomain_A80CCCC86448B4454AB56448F18AE145_terseLabel_en-US" xlink:label="lab_us-gaap_GeographicDistributionDomain_A80CCCC86448B4454AB56448F18AE145" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographic Distribution [Domain] </link:label>

<link:label id="lab_us-gaap_GeographicDistributionDomain_A80CCCC86448B4454AB56448F18AE145_label_en-US" xlink:label="lab_us-gaap_GeographicDistributionDomain_A80CCCC86448B4454AB56448F18AE145" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographic Distribution [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicDistributionDomain" xlink:label="loc_us-gaap_GeographicDistributionDomain_A80CCCC86448B4454AB56448F18AE145" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_1752CEC0E2EDAA1723566448F19A02E5_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_1752CEC0E2EDAA1723566448F19A02E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Disclosure [Line Items] </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_1752CEC0E2EDAA1723566448F19A02E5_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_1752CEC0E2EDAA1723566448F19A02E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Disclosure [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableDisclosureLineItems" xlink:label="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_1752CEC0E2EDAA1723566448F19A02E5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivableSignificantPurchases_0D7A037751AC4981AC6B6449004D7CF7_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantPurchases_0D7A037751AC4981AC6B6449004D7CF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Purchase </link:label>

<link:label id="lab_us-gaap_FinancingReceivableSignificantPurchases_0D7A037751AC4981AC6B6449004D7CF7_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantPurchases_0D7A037751AC4981AC6B6449004D7CF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Purchase </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableSignificantPurchases" xlink:label="loc_us-gaap_FinancingReceivableSignificantPurchases_0D7A037751AC4981AC6B6449004D7CF7" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivableSignificantSales_8022349ED556E730364F644902224DFF_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantSales_8022349ED556E730364F644902224DFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Sale </link:label>

<link:label id="lab_us-gaap_FinancingReceivableSignificantSales_8022349ED556E730364F644902224DFF_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableSignificantSales_8022349ED556E730364F644902224DFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Sale </link:label>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableGainLossOnSalesNet_2B303138E6EC74E3A0C26449028072EF_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableGainLossOnSalesNet_2B303138E6EC74E3A0C26449028072EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Gain (Loss) on Sales, Net </link:label>

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<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_E8ABBE883FF84E960237F2487CCF4D2F_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_E8ABBE883FF84E960237F2487CCF4D2F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Taxes </link:label>

<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_E8ABBE883FF84E960237F2487CCF4D2F_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_E8ABBE883FF84E960237F2487CCF4D2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Disclosure [Text Block] </link:label>

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<link:label id="lab_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_651DAF8EE3FF5DD606DE8348BF93195A_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_651DAF8EE3FF5DD606DE8348BF93195A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liabilities, Property, Plant and Equipment </link:label>

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<link:label id="lab_wal_CollateralMethodMember_9104A87E80874B86A98C83F6FFA8F60D_terseLabel_en-US" xlink:label="lab_wal_CollateralMethodMember_9104A87E80874B86A98C83F6FFA8F60D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateral Method [Member] </link:label>

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<link:label id="lab_wal_ThirdPartyAppraisalMember_41B8765B42F6A4DFC46083F6FFA86B3C_terseLabel_en-US" xlink:label="lab_wal_ThirdPartyAppraisalMember_41B8765B42F6A4DFC46083F6FFA86B3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Third Party Appraisal [Member] </link:label>

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<link:label id="lab_wal_DiscountRateMember_A065046C2320626AA18483F6FFA87135_terseLabel_en-US" xlink:label="lab_wal_DiscountRateMember_A065046C2320626AA18483F6FFA87135" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Discount Rate [Member] </link:label>

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<link:label id="lab_wal_ScheduledCashCollectionsMember_92B3604DD1CE1FF2FC6983F6FFA86E72_terseLabel_en-US" xlink:label="lab_wal_ScheduledCashCollectionsMember_92B3604DD1CE1FF2FC6983F6FFA86E72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Scheduled Cash Collections [Member] </link:label>

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<link:label id="lab_us-gaap_FairValueInputsLevel2Member_8BEB3CF54E1884CE9E7083F6FFA85145_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_8BEB3CF54E1884CE9E7083F6FFA85145" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 2 [Member] </link:label>

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<link:label id="lab_us-gaap_FairValueInputsLevel3Member_159916EE49629B0604A683F6FFA86882_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_159916EE49629B0604A683F6FFA86882" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Level 3 [Member] </link:label>

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<link:label id="lab_us-gaap_HeldToMaturitySecurities_A08E80B65D12EC058A8083F6FFA8409C_terseLabel_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecurities_A08E80B65D12EC058A8083F6FFA8409C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment securities - HTM, at amortized cost; fair value of $516,261 at December 31, 2019 and $298,648 at December 31, 2018 </link:label>

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<link:label id="lab_us-gaap_AccruedInvestmentIncomeReceivable_6A29F672C116432ABDDA83F6FFA82336_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedInvestmentIncomeReceivable_6A29F672C116432ABDDA83F6FFA82336" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued Investment Income Receivable </link:label>

<link:label id="lab_us-gaap_AccruedInvestmentIncomeReceivable_6A29F672C116432ABDDA83F6FFA82336_label_en-US" xlink:label="lab_us-gaap_AccruedInvestmentIncomeReceivable_6A29F672C116432ABDDA83F6FFA82336" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Investment Income Receivable </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecurities_4D830BE9E57C0E85F40C83F6FFA8C5A3_verboseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecurities_4D830BE9E57C0E85F40C83F6FFA8C5A3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecurities_4D830BE9E57C0E85F40C83F6FFA8C5A3_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecurities_4D830BE9E57C0E85F40C83F6FFA8C5A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Available-for-sale Securities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_4D830BE9E57C0E85F40C83F6FFA8C5A3" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EquitySecuritiesFvNi_3661E4CC350A2EB4E54983F6FFA88A97_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesFvNi_3661E4CC350A2EB4E54983F6FFA88A97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment securities - equity </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesFvNi_3661E4CC350A2EB4E54983F6FFA88A97_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesFvNi_3661E4CC350A2EB4E54983F6FFA88A97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Securities, FV-NI </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNi" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_3661E4CC350A2EB4E54983F6FFA88A97" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DerivativeAssets_FE05D4C79CDA4BE18D7B83F6FFA82883_label_en-US" xlink:label="lab_us-gaap_DerivativeAssets_FE05D4C79CDA4BE18D7B83F6FFA82883" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Asset </link:label>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_FFDC0D49BACDFA7CBFB283F6FFA832AA_totalLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_FFDC0D49BACDFA7CBFB283F6FFA832AA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net loans held for investment </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_FFDC0D49BACDFA7CBFB283F6FFA832AA_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_FFDC0D49BACDFA7CBFB283F6FFA832AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Net Amount </link:label>

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<link:label id="lab_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3E287CDAE57E2FA0B8AB83F6FFA8FF62_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3E287CDAE57E2FA0B8AB83F6FFA8FF62" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial liabilities </link:label>

<link:label id="lab_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3E287CDAE57E2FA0B8AB83F6FFA8FF62_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3E287CDAE57E2FA0B8AB83F6FFA8FF62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] </link:label>

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<link:label id="lab_us-gaap_InterestPayableCurrent_4663EDE8F4822730459D83F6FFA89C67_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_4663EDE8F4822730459D83F6FFA89C67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Payable, Current </link:label>

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<link:label id="lab_us-gaap_ForeclosedAssets_80A0A8210AFB10707BB983F6FFA8449A_terseLabel_en-US" xlink:label="lab_us-gaap_ForeclosedAssets_80A0A8210AFB10707BB983F6FFA8449A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Repossessed Assets </link:label>

<link:label id="lab_us-gaap_ForeclosedAssets_80A0A8210AFB10707BB983F6FFA8449A_label_en-US" xlink:label="lab_us-gaap_ForeclosedAssets_80A0A8210AFB10707BB983F6FFA8449A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repossessed Assets </link:label>

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<link:label id="lab_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_4EB7DC5A5A051EEC951F83F6FFA84A77_terseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_4EB7DC5A5A051EEC951F83F6FFA84A77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Federal Home Loan Bank Borrowings, Fair Value Disclosure </link:label>

<link:label id="lab_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_4EB7DC5A5A051EEC951F83F6FFA84A77_label_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_4EB7DC5A5A051EEC951F83F6FFA84A77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Federal Home Loan Bank Borrowings, Fair Value Disclosure </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure" xlink:label="loc_us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_4EB7DC5A5A051EEC951F83F6FFA84A77" xlink:type="locator"/>

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<link:label id="lab_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4_terseLabel_en-US" xlink:label="lab_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Borrowings Fair Value Disclosure </link:label>

<link:label id="lab_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4_label_en-US" xlink:label="lab_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Borrowings Fair Value Disclosure </link:label>

<link:label id="lab_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4_documentation_en-US" xlink:label="lab_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other borrowings fair value disclosure. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_OtherBorrowingsFairValueDisclosure" xlink:label="loc_wal_OtherBorrowingsFairValueDisclosure_8363026FADF980EFC46183F6FFA825B4" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_EC4AF8224704A088F27D83F6FFA80D62_verboseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_EC4AF8224704A088F27D83F6FFA80D62" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> FHLB and FRB advances </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate_EC4AF8224704A088F27D83F6FFA80D62" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_73237169481CB6736C2683F6FFA8DC15_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_73237169481CB6736C2683F6FFA8DC15" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Junior subordinated debt </link:label>

<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_73237169481CB6736C2683F6FFA8DC15_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_73237169481CB6736C2683F6FFA8DC15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subordinated Debt Obligations, Fair Value Disclosure </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_73237169481CB6736C2683F6FFA8DC15" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DerivativeLiabilities_82BFE41DDD944CAFD65783F6FFA85D29_verboseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilities_82BFE41DDD944CAFD65783F6FFA85D29" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Liability </link:label>

<link:label id="lab_us-gaap_DerivativeLiabilities_82BFE41DDD944CAFD65783F6FFA85D29_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilities_82BFE41DDD944CAFD65783F6FFA85D29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Liability </link:label>

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<link:label id="lab_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6_terseLabel_en-US" xlink:label="lab_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Hedge Assets, Loans </link:label>

<link:label id="lab_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6_label_en-US" xlink:label="lab_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Hedge Assets, Loans </link:label>

<link:label id="lab_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6_documentation_en-US" xlink:label="lab_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Fair Value Hedge Assets, Loans </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_FairValueHedgeAssetsLoans" xlink:label="loc_wal_FairValueHedgeAssetsLoans_6D4308D262534424D7ADF2487ACC2DF6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519_terseLabel_en-US" xlink:label="lab_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Repossessed Assets </link:label>

<link:label id="lab_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519_label_en-US" xlink:label="lab_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Repossessed Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherForeclosedAssets" xlink:label="loc_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519" xlink:to="lab_us-gaap_OtherForeclosedAssets_FE69AD7FA7B0F1EBE1CEF2487ACC6519" xlink:type="arc"/>

<link:label id="lab_us-gaap_FairValueHedgeAssetsAtFairValue_27050C246AFEF8F19FF1F2487ACCA297_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueHedgeAssetsAtFairValue_27050C246AFEF8F19FF1F2487ACCA297" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Hedge Assets </link:label>

<link:label id="lab_us-gaap_FairValueHedgeAssetsAtFairValue_27050C246AFEF8F19FF1F2487ACCA297_label_en-US" xlink:label="lab_us-gaap_FairValueHedgeAssetsAtFairValue_27050C246AFEF8F19FF1F2487ACCA297" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Hedge Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueHedgeAssetsAtFairValue" xlink:label="loc_us-gaap_FairValueHedgeAssetsAtFairValue_27050C246AFEF8F19FF1F2487ACCA297" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ValuationTechniqueDiscountedCashFlowMember_42F14A78F22519E5196235FA0B966A9A_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationTechniqueDiscountedCashFlowMember_42F14A78F22519E5196235FA0B966A9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Valuation Technique, Discounted Cash Flow [Member] </link:label>

<link:label id="lab_us-gaap_ValuationTechniqueDiscountedCashFlowMember_42F14A78F22519E5196235FA0B966A9A_label_en-US" xlink:label="lab_us-gaap_ValuationTechniqueDiscountedCashFlowMember_42F14A78F22519E5196235FA0B966A9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Valuation Technique, Discounted Cash Flow [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember" xlink:label="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_42F14A78F22519E5196235FA0B966A9A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueByLiabilityClassAxis_33E3F50AD050EF9B4BC835FA0B9751AD_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByLiabilityClassAxis_33E3F50AD050EF9B4BC835FA0B9751AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liability Class [Axis] </link:label>

<link:label id="lab_us-gaap_FairValueByLiabilityClassAxis_33E3F50AD050EF9B4BC835FA0B9751AD_label_en-US" xlink:label="lab_us-gaap_FairValueByLiabilityClassAxis_33E3F50AD050EF9B4BC835FA0B9751AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liability Class [Axis] </link:label>

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<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_06A09B639BCA7144261435FA0B983651_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_06A09B639BCA7144261435FA0B983651" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value by Liability Class [Domain] </link:label>

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<link:label id="lab_us-gaap_JuniorSubordinatedDebtMember_E34A2CBFE983A3C68C7B35FA0B9831A1_terseLabel_en-US" xlink:label="lab_us-gaap_JuniorSubordinatedDebtMember_E34A2CBFE983A3C68C7B35FA0B9831A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Junior Subordinated Debt [Member] </link:label>

<link:label id="lab_us-gaap_JuniorSubordinatedDebtMember_E34A2CBFE983A3C68C7B35FA0B9831A1_label_en-US" xlink:label="lab_us-gaap_JuniorSubordinatedDebtMember_E34A2CBFE983A3C68C7B35FA0B9831A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Junior Subordinated Debt [Member] </link:label>

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<link:label id="lab_us-gaap_FinancialInstrumentAxis_0159E4A83B9DA8D6938135FA0B9A725D_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis_0159E4A83B9DA8D6938135FA0B9A725D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Instrument [Axis] </link:label>

<link:label id="lab_us-gaap_FinancialInstrumentAxis_0159E4A83B9DA8D6938135FA0B9A725D_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis_0159E4A83B9DA8D6938135FA0B9A725D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instrument [Axis] </link:label>

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<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_E38E8D350FF8615931A135FA0B9AD96A_terseLabel_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_E38E8D350FF8615931A135FA0B9AD96A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Instruments [Domain] </link:label>

<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_E38E8D350FF8615931A135FA0B9AD96A_label_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_E38E8D350FF8615931A135FA0B9AD96A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instruments [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_E38E8D350FF8615931A135FA0B9AD96A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CollateralizedDebtObligationsMember_16D0751B6EA4DAE8852C35FA0B9B75EB_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralizedDebtObligationsMember_16D0751B6EA4DAE8852C35FA0B9B75EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateralized debt obligations [Member] </link:label>

<link:label id="lab_us-gaap_CollateralizedDebtObligationsMember_16D0751B6EA4DAE8852C35FA0B9B75EB_label_en-US" xlink:label="lab_us-gaap_CollateralizedDebtObligationsMember_16D0751B6EA4DAE8852C35FA0B9B75EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Collateralized Debt Obligations [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CollateralizedDebtObligationsMember" xlink:label="loc_us-gaap_CollateralizedDebtObligationsMember_16D0751B6EA4DAE8852C35FA0B9B75EB" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_2149F769C2818F6C5EF435FA0B9CE098_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_2149F769C2818F6C5EF435FA0B9CE098" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subordinated Debt Obligations, Fair Value Disclosure </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_2149F769C2818F6C5EF435FA0B9CE098" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_2149F769C2818F6C5EF435FA0B9CE098" xlink:to="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations_2149F769C2818F6C5EF435FA0B9CE098" xlink:type="arc"/>

<link:label id="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515_terseLabel_en-US" xlink:label="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivables, With No related Allowance, Balances with Charge-offs </link:label>

<link:label id="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515_label_en-US" xlink:label="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivables, With No related Allowance, Balances with Charge-offs </link:label>

<link:label id="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515_documentation_en-US" xlink:label="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivables, With No related Allowance, Balances with Charge-offs </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs" xlink:label="loc_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515" xlink:to="lab_wal_ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs_CFDF4222EB36D3412E2135FA0B9CE515" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Basis Spread on Variable Rate </link:label>

<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Basis Spread on Variable Rate </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A213158944D488D20C2E35FA0B9C2C61" xlink:type="arc"/>

<link:label id="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1_terseLabel_en-US" xlink:label="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage Of Basis Spread On Variable Rate </link:label>

<link:label id="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1_label_en-US" xlink:label="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Percentage Of Basis Spread On Variable Rate </link:label>

<link:label id="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1_documentation_en-US" xlink:label="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Percentage of basis spread on variable rate. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_PercentageOfBasisSpreadOnVariableRate" xlink:label="loc_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1" xlink:to="lab_wal_PercentageOfBasisSpreadOnVariableRate_0CC5DAB641882672238B35FA0B9CFCD1" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1_verboseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with an allowance recorded </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, with Related Allowance, Recorded Investment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment" xlink:label="loc_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1" xlink:to="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment_62DF6C2A8991CF48202735FA0B9C81B1" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with an allowance recorded </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, Related Allowance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:label="loc_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704" xlink:to="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_E058D77BE03F0551E2F535FA0B9D3704" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherForeclosedAssets_810E560686B9FFDF022135FA0B9D702F_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherForeclosedAssets_810E560686B9FFDF022135FA0B9D702F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other assets acquired through foreclosure </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherForeclosedAssets" xlink:label="loc_us-gaap_OtherForeclosedAssets_810E560686B9FFDF022135FA0B9D702F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherForeclosedAssets_810E560686B9FFDF022135FA0B9D702F" xlink:to="lab_us-gaap_OtherForeclosedAssets_810E560686B9FFDF022135FA0B9D702F" xlink:type="arc"/>

<link:label id="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03_terseLabel_en-US" xlink:label="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities contained credit losses </link:label>

<link:label id="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03_label_en-US" xlink:label="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Securities Contained Credit Losses </link:label>

<link:label id="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03_documentation_en-US" xlink:label="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Securities contained credit losses. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_SecuritiesContainedCreditLosses" xlink:label="loc_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03" xlink:to="lab_wal_SecuritiesContainedCreditLosses_ADA86A02C48623B76F6535FA0B9D7B03" xlink:type="arc"/>

<link:label id="lab_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Junior subordinated debt, Significant Unobservable Inputs </link:label>

<link:label id="lab_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Measurements, Valuation Processes, Description </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsValuationProcessesDescription" xlink:label="loc_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF" xlink:to="lab_us-gaap_FairValueMeasurementsValuationProcessesDescription_66E2A4BC7B51992B8A8C35FA0B9DEEEF" xlink:type="arc"/>

<link:label id="lab_us-gaap_ScheduleOfImpairedFinancingReceivableTable_1401F6CAD265CB1E2B2082769A0C377B_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfImpairedFinancingReceivableTable_1401F6CAD265CB1E2B2082769A0C377B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Impaired Financing Receivable [Table] </link:label>

<link:label id="lab_us-gaap_ScheduleOfImpairedFinancingReceivableTable_1401F6CAD265CB1E2B2082769A0C377B_label_en-US" xlink:label="lab_us-gaap_ScheduleOfImpairedFinancingReceivableTable_1401F6CAD265CB1E2B2082769A0C377B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Impaired Financing Receivable [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfImpairedFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfImpairedFinancingReceivableTable_1401F6CAD265CB1E2B2082769A0C377B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CreditLossStatusAxis_675678A0F575C879400682769A0C5241_terseLabel_en-US" xlink:label="lab_us-gaap_CreditLossStatusAxis_675678A0F575C879400682769A0C5241" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Loss Status [Axis] </link:label>

<link:label id="lab_us-gaap_CreditLossStatusAxis_675678A0F575C879400682769A0C5241_label_en-US" xlink:label="lab_us-gaap_CreditLossStatusAxis_675678A0F575C879400682769A0C5241" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Loss Status [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditLossStatusAxis" xlink:label="loc_us-gaap_CreditLossStatusAxis_675678A0F575C879400682769A0C5241" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CreditLossStatusDomain_AD23265C2B113220E51D82769A0C8FBE_terseLabel_en-US" xlink:label="lab_us-gaap_CreditLossStatusDomain_AD23265C2B113220E51D82769A0C8FBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Loss Status [Domain] </link:label>

<link:label id="lab_us-gaap_CreditLossStatusDomain_AD23265C2B113220E51D82769A0C8FBE_label_en-US" xlink:label="lab_us-gaap_CreditLossStatusDomain_AD23265C2B113220E51D82769A0C8FBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Loss Status [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditLossStatusDomain" xlink:label="loc_us-gaap_CreditLossStatusDomain_AD23265C2B113220E51D82769A0C8FBE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Asset Acquired with Credit Deterioration [Member] </link:label>

<link:label id="lab_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548_label_en-US" xlink:label="lab_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Asset Acquired with Credit Deterioration [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember" xlink:label="loc_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548" xlink:to="lab_us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_0C66B22612303913EEF482769A0C8548" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_C1AE80C2882E4D674CF482769A0C23B5_verboseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_C1AE80C2882E4D674CF482769A0C23B5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Class of Financing Receivable [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_C1AE80C2882E4D674CF482769A0C23B5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_C1AE80C2882E4D674CF482769A0C23B5" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_C1AE80C2882E4D674CF482769A0C23B5" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9B1C1D6C788D8D643E9A82769A0C85EB_verboseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9B1C1D6C788D8D643E9A82769A0C85EB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Class of Financing Receivable [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9B1C1D6C788D8D643E9A82769A0C85EB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9B1C1D6C788D8D643E9A82769A0C85EB" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_9B1C1D6C788D8D643E9A82769A0C85EB" xlink:type="arc"/>

<link:label id="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B_terseLabel_en-US" xlink:label="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Owner occupied [Member] </link:label>

<link:label id="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B_label_en-US" xlink:label="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate Owner Occupied [Member] </link:label>

<link:label id="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B_documentation_en-US" xlink:label="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Commercial real estate-owner occupied. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CommercialRealEstateOwnerOccupiedMember" xlink:label="loc_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B" xlink:to="lab_wal_CommercialRealEstateOwnerOccupiedMember_1F313F84C0C632F6EE2582769A0CA03B" xlink:type="arc"/>

<link:label id="lab_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256_terseLabel_en-US" xlink:label="lab_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consumer [Member] </link:label>

<link:label id="lab_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256_label_en-US" xlink:label="lab_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consumer Loan [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConsumerLoanMember" xlink:label="loc_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256" xlink:to="lab_us-gaap_ConsumerLoanMember_974CBCEFA91C1D3DAB6982769A0C7256" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Impaired [Line Items] </link:label>

<link:label id="lab_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Impaired [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableImpairedLineItems" xlink:label="loc_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0" xlink:to="lab_us-gaap_FinancingReceivableImpairedLineItems_F86320889433612494FD82769A0CD2E0" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with no allowance recorded </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, with No Related Allowance, Recorded Investment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment" xlink:label="loc_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391" xlink:to="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment_2693F59210E7EDAA447882769A0CF391" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA_verboseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total loans individually evaluated for impairment </link:label>

<link:label id="lab_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Individually Evaluated for Impairment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:label="loc_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA" xlink:to="lab_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_133CA3DE704A37D6BE4282769A0C73CA" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans collectively evaluated for impairment </link:label>

<link:label id="lab_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Collectively Evaluated for Impairment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment" xlink:label="loc_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254" xlink:to="lab_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_F99F9579AE299088716B82769A0CD254" xlink:type="arc"/>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3_verboseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total recorded investment </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Net of Deferred Income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3" xlink:to="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_CE2978CF06DAA6853D018276A094AAF3" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with an allowance recorded </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance" xlink:label="loc_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD" xlink:to="lab_us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance_277DA507EED35AD6625082769A0C72FD" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with no allowance recorded </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance" xlink:label="loc_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB" xlink:to="lab_us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance_23FB5BFF53DCA2C1DF1C82769A0CF0AB" xlink:type="arc"/>

<link:label id="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024_terseLabel_en-US" xlink:label="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total loans individually evaluated for impairment </link:label>

<link:label id="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024_label_en-US" xlink:label="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment </link:label>

<link:label id="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024_documentation_en-US" xlink:label="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Impaired financing receivable unpaid principal balance individually evaluated for impairment. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment" xlink:label="loc_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024" xlink:to="lab_wal_ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment_4940A6D8C446F152DB2182769A0C6024" xlink:type="arc"/>

<link:label id="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A_terseLabel_en-US" xlink:label="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans collectively evaluated for impairment </link:label>

<link:label id="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A_label_en-US" xlink:label="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment </link:label>

<link:label id="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A_documentation_en-US" xlink:label="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Financing receivable unpaid principal balance collectively evaluated for impairment. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment" xlink:label="loc_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A" xlink:to="lab_wal_FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment_FA925A99C044DB508D3682769A0C131A" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans acquired with deteriorated credit quality </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, Unpaid Principal Balance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance" xlink:label="loc_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B" xlink:to="lab_us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance_50F28A724822AE8C408682769A0C314B" xlink:type="arc"/>

<link:label id="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85_terseLabel_en-US" xlink:label="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total unpaid principal balance </link:label>

<link:label id="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85_label_en-US" xlink:label="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable Unpaid Principal Balance </link:label>

<link:label id="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85_documentation_en-US" xlink:label="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amount of unpaid principal balance of financing receivables with related allowance for credit losses and without related allowance for credit losses. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_FinancingReceivableUnpaidPrincipalBalance" xlink:label="loc_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85" xlink:to="lab_wal_FinancingReceivableUnpaidPrincipalBalance_727A3CC42576623F154582769A0C7B85" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_049C7FAB4A9F6AD73A9A82769A0C9939_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_049C7FAB4A9F6AD73A9A82769A0C9939" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with an allowance recorded </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableRelatedAllowance" xlink:label="loc_us-gaap_ImpairedFinancingReceivableRelatedAllowance_049C7FAB4A9F6AD73A9A82769A0C9939" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableRelatedAllowance_049C7FAB4A9F6AD73A9A82769A0C9939" xlink:to="lab_us-gaap_ImpairedFinancingReceivableRelatedAllowance_049C7FAB4A9F6AD73A9A82769A0C9939" xlink:type="arc"/>

<link:label id="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81_terseLabel_en-US" xlink:label="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired loans with no allowance recorded </link:label>

<link:label id="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81_label_en-US" xlink:label="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable With No Related Allowance </link:label>

<link:label id="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81_documentation_en-US" xlink:label="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Impaired financing receivable with no related allowance. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ImpairedFinancingReceivableWithNoRelatedAllowance" xlink:label="loc_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81" xlink:to="lab_wal_ImpairedFinancingReceivableWithNoRelatedAllowance_3B26B58CF034052731AC82769A0CBC81" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total loans individually evaluated for impairment </link:label>

<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5" xlink:to="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1_4F99FC200A6B11A908E682769A0C65F5" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans collectively evaluated for impairment </link:label>

<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36" xlink:to="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment_3FA80E679E1C63EB553E82769A0C8D36" xlink:type="arc"/>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236_verboseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total loans held for investment </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Allowance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236" xlink:to="lab_us-gaap_LoansAndLeasesReceivableAllowance_51EAA656585967A352F482769A0CE236" xlink:type="arc"/>

<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_41D8C03D612E6192569CF2487A3E81F1_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_41D8C03D612E6192569CF2487A3E81F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies Disclosure [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_41D8C03D612E6192569CF2487A3E81F1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherCommitmentsTable_E3230E60B7E3D6E94B0FF2487A3EDCE1_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsTable_E3230E60B7E3D6E94B0FF2487A3EDCE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Commitments [Table] </link:label>

<link:label id="lab_us-gaap_OtherCommitmentsTable_E3230E60B7E3D6E94B0FF2487A3EDCE1_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsTable_E3230E60B7E3D6E94B0FF2487A3EDCE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Commitments [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsTable" xlink:label="loc_us-gaap_OtherCommitmentsTable_E3230E60B7E3D6E94B0FF2487A3EDCE1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E" xlink:to="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_42C00282805AE7567EEBF2487A3E870E" xlink:type="arc"/>

<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_FAF092A6056B06E08955F2487A3FF086_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_FAF092A6056B06E08955F2487A3FF086" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_FAF092A6056B06E08955F2487A3FF086_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_FAF092A6056B06E08955F2487A3FF086" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_FAF092A6056B06E08955F2487A3FF086" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansReceivableMember_6CBCB0B7D840A2ED13BFF2487A3F1B78_terseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableMember_6CBCB0B7D840A2ED13BFF2487A3F1B78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans Receivable [Member] </link:label>

<link:label id="lab_us-gaap_LoansReceivableMember_6CBCB0B7D840A2ED13BFF2487A3F1B78_label_en-US" xlink:label="lab_us-gaap_LoansReceivableMember_6CBCB0B7D840A2ED13BFF2487A3F1B78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans Receivable [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansReceivableMember" xlink:label="loc_us-gaap_LoansReceivableMember_6CBCB0B7D840A2ED13BFF2487A3F1B78" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_E8D8F07BB4D961B9037BF2487A3F249A_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_E8D8F07BB4D961B9037BF2487A3F249A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Axis] </link:label>

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<link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_B9FD3CBDBC4573E56ADCF2487A3F67D4_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_B9FD3CBDBC4573E56ADCF2487A3F67D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Domain] </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_B9FD3CBDBC4573E56ADCF2487A3F67D4_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_B9FD3CBDBC4573E56ADCF2487A3F67D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_B9FD3CBDBC4573E56ADCF2487A3F67D4" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC_terseLabel_en-US" xlink:label="lab_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Concentration Risk [Member] </link:label>

<link:label id="lab_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC_label_en-US" xlink:label="lab_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Concentration Risk [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditConcentrationRiskMember" xlink:label="loc_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC" xlink:to="lab_us-gaap_CreditConcentrationRiskMember_38355FD0F819BB3DC876F2487A40A9EC" xlink:type="arc"/>

<link:label id="lab_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F_terseLabel_en-US" xlink:label="lab_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate Portfolio Segment [Member] </link:label>

<link:label id="lab_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F_label_en-US" xlink:label="lab_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate Portfolio Segment [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialRealEstatePortfolioSegmentMember" xlink:label="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F" xlink:to="lab_us-gaap_CommercialRealEstatePortfolioSegmentMember_A468BCF80D71F16D5E9EF2487A40D00F" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Commitments [Axis] </link:label>

<link:label id="lab_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Commitments [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsAxis" xlink:label="loc_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1" xlink:to="lab_us-gaap_OtherCommitmentsAxis_CC45277094DBD202D2BDF2487A4138A1" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Commitments [Domain] </link:label>

<link:label id="lab_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Commitments [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsDomain" xlink:label="loc_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773" xlink:to="lab_us-gaap_OtherCommitmentsDomain_DF66FFDE565D68E01ADFF2487A41D773" xlink:type="arc"/>

<link:label id="lab_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D_terseLabel_en-US" xlink:label="lab_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unfunded Loan Commitment [Member] </link:label>

<link:label id="lab_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D_label_en-US" xlink:label="lab_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unfunded Loan Commitment [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnfundedLoanCommitmentMember" xlink:label="loc_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D" xlink:to="lab_us-gaap_UnfundedLoanCommitmentMember_B46834D482555EE9B546F2487A41222D" xlink:type="arc"/>

<link:label id="lab_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D_terseLabel_en-US" xlink:label="lab_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Standby letters of credit [Member] </link:label>

<link:label id="lab_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D_label_en-US" xlink:label="lab_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Standby Letters of Credit [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StandbyLettersOfCreditMember" xlink:label="loc_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D" xlink:to="lab_us-gaap_StandbyLettersOfCreditMember_D378628AB2BA915B68BAF2487A42E59D" xlink:type="arc"/>

<link:label id="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44_terseLabel_en-US" xlink:label="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit card guarantees [Member] </link:label>

<link:label id="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44_label_en-US" xlink:label="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Card Commitments And Financial Guarantees [Member] </link:label>

<link:label id="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44_documentation_en-US" xlink:label="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Credit card commitments and financial guarantees. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CreditCardCommitmentsAndFinancialGuaranteesMember" xlink:label="loc_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44" xlink:to="lab_wal_CreditCardCommitmentsAndFinancialGuaranteesMember_35F9DD76823258C5E6C8F2487A428D44" xlink:type="arc"/>

<link:label id="lab_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments to extend credit [Member] </link:label>

<link:label id="lab_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E_label_en-US" xlink:label="lab_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments to Extend Credit [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsToExtendCreditMember" xlink:label="loc_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E" xlink:to="lab_us-gaap_CommitmentsToExtendCreditMember_4AFB676B27FA59D17715F2487A42DB9E" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Commitments [Line Items] </link:label>

<link:label id="lab_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Commitments [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitmentsLineItems" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0" xlink:to="lab_us-gaap_OtherCommitmentsLineItems_550D9AB401747A6D7A10F2487A4252F0" xlink:type="arc"/>

<link:label id="lab_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingency Accrual </link:label>

<link:label id="lab_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01_label_en-US" xlink:label="lab_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingency Accrual </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01" xlink:to="lab_us-gaap_LossContingencyAccrualAtCarryingValue_95BDB7B15B90BCAEB42DF2487A42CB01" xlink:type="arc"/>

<link:label id="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total amount </link:label>

<link:label id="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability" xlink:label="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28" xlink:to="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_BBBBB58160E3314E8449F2487A488F28" xlink:type="arc"/>

<link:label id="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88_terseLabel_en-US" xlink:label="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unsecured Loan Commitments </link:label>

<link:label id="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88_label_en-US" xlink:label="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unsecured Loan Commitments </link:label>

<link:label id="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88_documentation_en-US" xlink:label="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unsecured loan commitments. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_UnsecuredLoanCommitments" xlink:label="loc_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88" xlink:to="lab_wal_UnsecuredLoanCommitments_F7A21F83D49E2BB77434F2487A48BC88" xlink:type="arc"/>

<link:label id="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B_terseLabel_en-US" xlink:label="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unsecured Letters Of Credit </link:label>

<link:label id="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B_label_en-US" xlink:label="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unsecured Letters Of Credit </link:label>

<link:label id="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B_documentation_en-US" xlink:label="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unsecured letters of credit. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_UnsecuredLettersOfCredit" xlink:label="loc_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B" xlink:to="lab_wal_UnsecuredLettersOfCredit_E21ADDCFECB94E070ACDF2487A48BD0B" xlink:type="arc"/>

<link:label id="lab_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Rent Expense, Net </link:label>

<link:label id="lab_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Rent Expense, Net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet" xlink:label="loc_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F" xlink:to="lab_us-gaap_OperatingLeasesRentExpenseNet_9E7B531BE5FF68795E20F2487A48206F" xlink:type="arc"/>

<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk, Percentage </link:label>

<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk, Percentage </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1_97FC24EF05A46791B9FBF2487A48A7EF" xlink:type="arc"/>

<link:label id="lab_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9_terseLabel_en-US" xlink:label="lab_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percent of commercial real estate loans owner occupied </link:label>

<link:label id="lab_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9_label_en-US" xlink:label="lab_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Percentage Of Commercial Real Estate Loans Occupied By Owners </link:label>

<link:label id="lab_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9_documentation_en-US" xlink:label="lab_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Percentage of commercial real estate Loans occupied by owners. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners" xlink:label="loc_wal_PercentageOfCommercialRealEstateLoansOccupiedByOwners_BFFEA81708BBF6427FCAF2487A4939B9" xlink:type="locator"/>

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<link:label id="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E_terseLabel_en-US" xlink:label="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Multi-family [Member] </link:label>

<link:label id="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E_label_en-US" xlink:label="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate Multi Family [Member] </link:label>

<link:label id="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E_documentation_en-US" xlink:label="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Commercial real estate multi family. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CommercialRealEstateMultiFamilyMember" xlink:label="loc_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E" xlink:to="lab_wal_CommercialRealEstateMultiFamilyMember_3D936C1D76DF0CDDAD0DF24876B8F63E" xlink:type="arc"/>

<link:label id="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD_terseLabel_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Construction [Member] </link:label>

<link:label id="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD_label_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Construction And Land Development Construction [Member] </link:label>

<link:label id="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD_documentation_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Construction and land development construction. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ConstructionAndLandDevelopmentConstructionMember" xlink:label="loc_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD" xlink:to="lab_wal_ConstructionAndLandDevelopmentConstructionMember_7A301A54210174087DA9F24876B99AAD" xlink:type="arc"/>

<link:label id="lab_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3_terseLabel_en-US" xlink:label="lab_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Land [Member] </link:label>

<link:label id="lab_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3_label_en-US" xlink:label="lab_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Land [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3" xlink:to="lab_us-gaap_LandMember_CB5E3A70BAD088B2ACB6F24876B95AD3" xlink:type="arc"/>

<link:label id="lab_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60_terseLabel_en-US" xlink:label="lab_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial real estate [Member] </link:label>

<link:label id="lab_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60_label_en-US" xlink:label="lab_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="loc_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60" xlink:to="lab_us-gaap_CommercialRealEstateMember_F30523E9343AC712F670F24876BABB60" xlink:type="arc"/>

<link:label id="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D_terseLabel_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Construction and land development [Member] </link:label>

<link:label id="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D_label_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Construction And Land Development Land [Member] </link:label>

<link:label id="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D_documentation_en-US" xlink:label="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Construction and land development land. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ConstructionAndLandDevelopmentLandMember" xlink:label="loc_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D" xlink:to="lab_wal_ConstructionAndLandDevelopmentLandMember_541E309A8FEB07C1F45BF24876BAEC7D" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0_verboseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total interest income on impaired loans by class </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, Interest Income, Accrual Method </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:label="loc_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0" xlink:to="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_F011FBA510013CD4C04FF24876BB3AC0" xlink:type="arc"/>

<link:label id="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_C443DD0F5FB411B752CA40798136CE6B_label_en-US" xlink:label="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_C443DD0F5FB411B752CA40798136CE6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investments, Debt and Equity Securities [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_C443DD0F5FB411B752CA40798136CE6B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_C443DD0F5FB411B752CA40798136CE6B" xlink:to="lab_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_C443DD0F5FB411B752CA40798136CE6B" xlink:type="arc"/>

<link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Available-for-sale Securities [Table] </link:label>

<link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Available-for-sale Securities [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C" xlink:to="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_DA2E4EFF854C6150437940798136631C" xlink:type="arc"/>

<link:label id="lab_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676_terseLabel_en-US" xlink:label="lab_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> External Credit Rating by Grouping [Axis] </link:label>

<link:label id="lab_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676_label_en-US" xlink:label="lab_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> External Credit Rating by Grouping [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ExternalCreditRatingByGroupingAxis" xlink:label="loc_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676" xlink:to="lab_us-gaap_ExternalCreditRatingByGroupingAxis_846030341260996AFB97407981364676" xlink:type="arc"/>

<link:label id="lab_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E_terseLabel_en-US" xlink:label="lab_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> External Credit Rating by Grouping [Domain] </link:label>

<link:label id="lab_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E_label_en-US" xlink:label="lab_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> External Credit Rating by Grouping [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ExternalCreditRatingByGroupingDomain" xlink:label="loc_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E" xlink:to="lab_us-gaap_ExternalCreditRatingByGroupingDomain_09EF9688698AC3EB9B0940798137C21E" xlink:type="arc"/>

<link:label id="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8_terseLabel_en-US" xlink:label="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Rated Securities [Member] </link:label>

<link:label id="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8_label_en-US" xlink:label="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Rated Securities [Member] </link:label>

<link:label id="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8_documentation_en-US" xlink:label="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Rated Securities [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_RatedSecuritiesMember" xlink:label="loc_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8" xlink:to="lab_wal_RatedSecuritiesMember_BF5E72C9828E5FF98F8F407981373AE8" xlink:type="arc"/>

<link:label id="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> AAA [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Aaa [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate credit quality indicator. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorAaaMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B" xlink:to="lab_wal_CorporateCreditQualityIndicatorAaaMember_E665A48F82C45CFFB44C407981375F6B" xlink:type="arc"/>

<link:label id="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Split-rated AAA/AA Plus [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Split Aaa To Aa Plus [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate credit quality indicator. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64" xlink:to="lab_wal_CorporateCreditQualityIndicatorSplitAaaToAaPlusMember_1A390D8916AE4A59AD37407981380F64" xlink:type="arc"/>

<link:label id="lab_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> AA Plus to AA- [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Aa Plus To Aa Minus [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate credit quality indicator. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorAaPlusToAaMinusMember_94B7FABB646DE45A707F4079813878C5" xlink:type="locator"/>

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<link:label id="lab_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> A Plus to A- [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Plus To Minus [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate credit quality indicator. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorPlusToMinusMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorPlusToMinusMember_26637E6885BB62170D5540798138F5AF" xlink:type="locator"/>

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<link:label id="lab_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> BBB Plus to BBB- [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Bbb Plus To Bbb Minus [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate credit quality indicator. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorBbbPlusToBbbMinusMember_0A5C8D704276A7BB4D47407981381630" xlink:type="locator"/>

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<link:label id="lab_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> BB Plus and below [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Bb Plus And Below [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate credit quality indicator. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorBbPlusAndBelowMember_88D15308AA409F6CE4FC40798138B275" xlink:type="locator"/>

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<link:label id="lab_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09_terseLabel_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Unrated [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09_label_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Unrated [Member] </link:label>

<link:label id="lab_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09_documentation_en-US" xlink:label="lab_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate Credit Quality Indicator Unrated [Member] [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CorporateCreditQualityIndicatorUnratedMember" xlink:label="loc_wal_CorporateCreditQualityIndicatorUnratedMember_B3B4944C05F728ADE45A407981387A09" xlink:type="locator"/>

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<link:label id="lab_us-gaap_MunicipalBondsMember_5BA4C6CD4360CBE51961407981395002_terseLabel_en-US" xlink:label="lab_us-gaap_MunicipalBondsMember_5BA4C6CD4360CBE51961407981395002" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Municipal obligations [Member] </link:label>

<link:label id="lab_us-gaap_MunicipalBondsMember_5BA4C6CD4360CBE51961407981395002_label_en-US" xlink:label="lab_us-gaap_MunicipalBondsMember_5BA4C6CD4360CBE51961407981395002" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Municipal Bonds [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MunicipalBondsMember" xlink:label="loc_us-gaap_MunicipalBondsMember_5BA4C6CD4360CBE51961407981395002" xlink:type="locator"/>

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<link:label id="lab_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_F34FFC76D2658AD504B64079813930EE_terseLabel_en-US" xlink:label="lab_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_F34FFC76D2658AD504B64079813930EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Residential mortgage-backed securities issued by GSEs </link:label>

<link:label id="lab_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_F34FFC76D2658AD504B64079813930EE_label_en-US" xlink:label="lab_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_F34FFC76D2658AD504B64079813930EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" xlink:label="loc_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_F34FFC76D2658AD504B64079813930EE" xlink:type="locator"/>

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<link:label id="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2_terseLabel_en-US" xlink:label="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member] </link:label>

<link:label id="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2_label_en-US" xlink:label="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member] </link:label>

<link:label id="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2_documentation_en-US" xlink:label="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember" xlink:label="loc_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2" xlink:to="lab_wal_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterpriseMember_D3A82A453DA56AF4F46940798139B5D2" xlink:type="arc"/>

<link:label id="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember_111694212976D0F4B40F40798139B660_terseLabel_en-US" xlink:label="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember_111694212976D0F4B40F40798139B660" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Private label residential mortgage-backed securities [Member] </link:label>

<link:label id="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember_111694212976D0F4B40F40798139B660_label_en-US" xlink:label="lab_us-gaap_ResidentialMortgageBackedSecuritiesMember_111694212976D0F4B40F40798139B660" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Residential Mortgage Backed Securities [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:label="loc_us-gaap_ResidentialMortgageBackedSecuritiesMember_111694212976D0F4B40F40798139B660" xlink:type="locator"/>

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<link:label id="lab_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_8942C8C71AE7DA01422A4079813A8EF6_terseLabel_en-US" xlink:label="lab_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_8942C8C71AE7DA01422A4079813A8EF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> US Government-sponsored Enterprises Debt Securities [Member] </link:label>

<link:label id="lab_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_8942C8C71AE7DA01422A4079813A8EF6_label_en-US" xlink:label="lab_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_8942C8C71AE7DA01422A4079813A8EF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> US Government-sponsored Enterprises Debt Securities [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_8942C8C71AE7DA01422A4079813A8EF6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_USTreasurySecuritiesMember_9FD6F9930BF807EAC0D24079813AFED0_terseLabel_en-US" xlink:label="lab_us-gaap_USTreasurySecuritiesMember_9FD6F9930BF807EAC0D24079813AFED0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> US Treasury Securities [Member] </link:label>

<link:label id="lab_us-gaap_USTreasurySecuritiesMember_9FD6F9930BF807EAC0D24079813AFED0_label_en-US" xlink:label="lab_us-gaap_USTreasurySecuritiesMember_9FD6F9930BF807EAC0D24079813AFED0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> US Treasury Securities [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasurySecuritiesMember" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_9FD6F9930BF807EAC0D24079813AFED0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember_6BFE0D8DC901E6D3AF344079813A3EE8_terseLabel_en-US" xlink:label="lab_us-gaap_TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember_6BFE0D8DC901E6D3AF344079813A3EE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trust preferred securities [Member] </link:label>

<link:label id="lab_us-gaap_TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember_6BFE0D8DC901E6D3AF344079813A3EE8_label_en-US" xlink:label="lab_us-gaap_TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember_6BFE0D8DC901E6D3AF344079813A3EE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Trust Preferred Securities Subject to Mandatory Redemption [Member] </link:label>

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<link:label id="lab_us-gaap_CorporateBondSecuritiesMember_FDBA62E969E8D35F548B4079813A1CF6_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateBondSecuritiesMember_FDBA62E969E8D35F548B4079813A1CF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate debt securities [Member] </link:label>

<link:label id="lab_us-gaap_CorporateBondSecuritiesMember_FDBA62E969E8D35F548B4079813A1CF6_label_en-US" xlink:label="lab_us-gaap_CorporateBondSecuritiesMember_FDBA62E969E8D35F548B4079813A1CF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Bond Securities [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateBondSecuritiesMember" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_FDBA62E969E8D35F548B4079813A1CF6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_TaxableMunicipalBondsMember_0054D0D59FEF6147D89D4079813B7676_terseLabel_en-US" xlink:label="lab_us-gaap_TaxableMunicipalBondsMember_0054D0D59FEF6147D89D4079813B7676" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Taxable Municipal Bonds [Member] </link:label>

<link:label id="lab_us-gaap_TaxableMunicipalBondsMember_0054D0D59FEF6147D89D4079813B7676_label_en-US" xlink:label="lab_us-gaap_TaxableMunicipalBondsMember_0054D0D59FEF6147D89D4079813B7676" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Taxable Municipal Bonds [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TaxableMunicipalBondsMember" xlink:label="loc_us-gaap_TaxableMunicipalBondsMember_0054D0D59FEF6147D89D4079813B7676" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_8C068783D29C16AEF95B4079813B2DED_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_8C068783D29C16AEF95B4079813B2DED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale [Line Items] </link:label>

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<link:label id="lab_us-gaap_CommonStockMember_99F9153E453C2AFDD4BF82022174315B_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_99F9153E453C2AFDD4BF82022174315B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>

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<link:label id="lab_us-gaap_TreasuryStockMember_2BB5DF68B4F615864DFC820221747542_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_2BB5DF68B4F615864DFC820221747542" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Member] </link:label>

<link:label id="lab_us-gaap_TreasuryStockMember_2BB5DF68B4F615864DFC820221747542_label_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_2BB5DF68B4F615864DFC820221747542" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_2BB5DF68B4F615864DFC820221747542" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7712B189D3B1326DB498820221745BB7_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7712B189D3B1326DB498820221745BB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> AOCI Attributable to Parent [Member] </link:label>

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<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_17974DE84E35E3673C188202217484D8_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_17974DE84E35E3673C188202217484D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, Stock Options Exercised </link:label>

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<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_7AB4C4216033D636293982022174CC0C_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_7AB4C4216033D636293982022174CC0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted stock grants, net, shares </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_7AB4C4216033D636293982022174CC0C_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_7AB4C4216033D636293982022174CC0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures </link:label>

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<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted stock grants, net </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_05E3C2BB4E692372034E82022174A5CB" xlink:type="arc"/>

<link:label id="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_57335FD7147C445EA00D820555BF7288_terseLabel_en-US" xlink:label="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_57335FD7147C445EA00D820555BF7288" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation </link:label>

<link:label id="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_57335FD7147C445EA00D820555BF7288_label_en-US" xlink:label="lab_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_57335FD7147C445EA00D820555BF7288" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_57335FD7147C445EA00D820555BF7288" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_A2A0643A5743026A9A9F8203A1930C5E_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_A2A0643A5743026A9A9F8203A1930C5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Decrease for Tax Withholding Obligation </link:label>

<link:label id="lab_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_A2A0643A5743026A9A9F8203A1930C5E_label_en-US" xlink:label="lab_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_A2A0643A5743026A9A9F8203A1930C5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Decrease for Tax Withholding Obligation </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_A2A0643A5743026A9A9F8203A1930C5E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_090015E4E08B7C647809820221741CDF_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_090015E4E08B7C647809820221741CDF" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Stock Repurchased and Retired During Period, Shares </link:label>

<link:label id="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_090015E4E08B7C647809820221741CDF_label_en-US" xlink:label="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_090015E4E08B7C647809820221741CDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Repurchased and Retired During Period, Shares </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_090015E4E08B7C647809820221741CDF" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_C2C366A3CAC1B786294C8202217416CE_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_C2C366A3CAC1B786294C8202217416CE" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Stock Repurchased and Retired During Period, Value </link:label>

<link:label id="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_C2C366A3CAC1B786294C8202217416CE_label_en-US" xlink:label="lab_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_C2C366A3CAC1B786294C8202217416CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Repurchased and Retired During Period, Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_C2C366A3CAC1B786294C8202217416CE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DividendsCommonStockCash_213B16F7D020A752790982022174478E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DividendsCommonStockCash_213B16F7D020A752790982022174478E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Dividends, Common Stock, Cash </link:label>

<link:label id="lab_us-gaap_DividendsCommonStockCash_213B16F7D020A752790982022174478E_label_en-US" xlink:label="lab_us-gaap_DividendsCommonStockCash_213B16F7D020A752790982022174478E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividends, Common Stock, Cash </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsCommonStockCash" xlink:label="loc_us-gaap_DividendsCommonStockCash_213B16F7D020A752790982022174478E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_46D88395150F1F7AFC1482022174BA6D_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_46D88395150F1F7AFC1482022174BA6D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, New Issues </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_46D88395150F1F7AFC1482022174BA6D_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_46D88395150F1F7AFC1482022174BA6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, New Issues </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_46D88395150F1F7AFC1482022174BA6D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_8CB1B43DF1DF85B00C13820221745BB8_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_8CB1B43DF1DF85B00C13820221745BB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, New Issues </link:label>

<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_8CB1B43DF1DF85B00C13820221745BB8_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_8CB1B43DF1DF85B00C13820221745BB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, New Issues </link:label>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_25B67C1F26FAEAA1FE6A8202217485E8_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_25B67C1F26FAEAA1FE6A8202217485E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive (loss) income, net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_25B67C1F26FAEAA1FE6A8202217485E8" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockholdersEquity_B8ABA0529CCCA84FF360820221747F3D_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_B8ABA0529CCCA84FF360820221747F3D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_B8ABA0529CCCA84FF360820221747F3D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SharesIssued_9FA10F218888A78237C382022174468D_periodEndLabel_en-US" xlink:label="lab_us-gaap_SharesIssued_9FA10F218888A78237C382022174468D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance, shares </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued_9FA10F218888A78237C382022174468D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeStatementAbstract_8D1EDEEF7E52D20271A77EEF7D541ADB_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_8D1EDEEF7E52D20271A77EEF7D541ADB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement [Abstract] </link:label>

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<link:label id="lab_us-gaap_InterestAndDividendIncomeOperatingAbstract_A0166C3FA9EC0D5B54717EEF7D56D52F_terseLabel_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperatingAbstract_A0166C3FA9EC0D5B54717EEF7D56D52F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest income: </link:label>

<link:label id="lab_us-gaap_InterestAndDividendIncomeOperatingAbstract_A0166C3FA9EC0D5B54717EEF7D56D52F_label_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperatingAbstract_A0166C3FA9EC0D5B54717EEF7D56D52F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest and Dividend Income, Operating [Abstract] </link:label>

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<link:label id="lab_us-gaap_InterestAndFeeIncomeLoansAndLeases_74E58CCDBD5440C4211E7EEF7D5643CF_terseLabel_en-US" xlink:label="lab_us-gaap_InterestAndFeeIncomeLoansAndLeases_74E58CCDBD5440C4211E7EEF7D5643CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans, including fees </link:label>

<link:label id="lab_us-gaap_InterestAndFeeIncomeLoansAndLeases_74E58CCDBD5440C4211E7EEF7D5643CF_label_en-US" xlink:label="lab_us-gaap_InterestAndFeeIncomeLoansAndLeases_74E58CCDBD5440C4211E7EEF7D5643CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest and Fee Income, Loans and Leases </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_74E58CCDBD5440C4211E7EEF7D5643CF" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestIncomeSecuritiesTaxable_F570B2B5CE09065BF3C37EEF7D57D8B6_label_en-US" xlink:label="lab_us-gaap_InterestIncomeSecuritiesTaxable_F570B2B5CE09065BF3C37EEF7D57D8B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Income, Securities, Operating, Taxable </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxable" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxable_F570B2B5CE09065BF3C37EEF7D57D8B6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DividendIncomeSecuritiesOperatingTaxable_2621E2AE2F9D61FD87F37EEF7D57CCDE_terseLabel_en-US" xlink:label="lab_us-gaap_DividendIncomeSecuritiesOperatingTaxable_2621E2AE2F9D61FD87F37EEF7D57CCDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends </link:label>

<link:label id="lab_us-gaap_DividendIncomeSecuritiesOperatingTaxable_2621E2AE2F9D61FD87F37EEF7D57CCDE_label_en-US" xlink:label="lab_us-gaap_DividendIncomeSecuritiesOperatingTaxable_2621E2AE2F9D61FD87F37EEF7D57CCDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividend Income, Securities, Operating, Taxable </link:label>

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<link:label id="lab_us-gaap_OtherInterestAndDividendIncome_7E09300D1463514B69997EEF7D5773D3_terseLabel_en-US" xlink:label="lab_us-gaap_OtherInterestAndDividendIncome_7E09300D1463514B69997EEF7D5773D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>

<link:label id="lab_us-gaap_OtherInterestAndDividendIncome_7E09300D1463514B69997EEF7D5773D3_label_en-US" xlink:label="lab_us-gaap_OtherInterestAndDividendIncome_7E09300D1463514B69997EEF7D5773D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Interest and Dividend Income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherInterestAndDividendIncome" xlink:label="loc_us-gaap_OtherInterestAndDividendIncome_7E09300D1463514B69997EEF7D5773D3" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestAndDividendIncomeOperating_BA8F485FA6C5F4F371997EEF7D571CC8_totalLabel_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperating_BA8F485FA6C5F4F371997EEF7D571CC8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total interest income </link:label>

<link:label id="lab_us-gaap_InterestAndDividendIncomeOperating_BA8F485FA6C5F4F371997EEF7D571CC8_label_en-US" xlink:label="lab_us-gaap_InterestAndDividendIncomeOperating_BA8F485FA6C5F4F371997EEF7D571CC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest and Dividend Income, Operating </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndDividendIncomeOperating" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating_BA8F485FA6C5F4F371997EEF7D571CC8" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestExpenseAbstract_754806BCCD873EF90E487EEF7D58446A_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseAbstract_754806BCCD873EF90E487EEF7D58446A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest expense: </link:label>

<link:label id="lab_us-gaap_InterestExpenseAbstract_754806BCCD873EF90E487EEF7D58446A_label_en-US" xlink:label="lab_us-gaap_InterestExpenseAbstract_754806BCCD873EF90E487EEF7D58446A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseAbstract" xlink:label="loc_us-gaap_InterestExpenseAbstract_754806BCCD873EF90E487EEF7D58446A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestExpenseDeposits_5FAA11FF5F37E7F61E887EEF7D5834B2_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseDeposits_5FAA11FF5F37E7F61E887EEF7D5834B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposits </link:label>

<link:label id="lab_us-gaap_InterestExpenseDeposits_5FAA11FF5F37E7F61E887EEF7D5834B2_label_en-US" xlink:label="lab_us-gaap_InterestExpenseDeposits_5FAA11FF5F37E7F61E887EEF7D5834B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense, Deposits </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseDeposits" xlink:label="loc_us-gaap_InterestExpenseDeposits_5FAA11FF5F37E7F61E887EEF7D5834B2" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestExpenseBorrowings_B18166A36E24C4F599077EEF7D584F64_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseBorrowings_B18166A36E24C4F599077EEF7D584F64" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other borrowings </link:label>

<link:label id="lab_us-gaap_InterestExpenseBorrowings_B18166A36E24C4F599077EEF7D584F64_label_en-US" xlink:label="lab_us-gaap_InterestExpenseBorrowings_B18166A36E24C4F599077EEF7D584F64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense, Borrowings </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseBorrowings" xlink:label="loc_us-gaap_InterestExpenseBorrowings_B18166A36E24C4F599077EEF7D584F64" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestExpenseSubordinatedNotesAndDebentures_3261C78A441AE264DBCA7EEF7D59B1EE_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseSubordinatedNotesAndDebentures_3261C78A441AE264DBCA7EEF7D59B1EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Qualifying debt </link:label>

<link:label id="lab_us-gaap_InterestExpenseSubordinatedNotesAndDebentures_3261C78A441AE264DBCA7EEF7D59B1EE_label_en-US" xlink:label="lab_us-gaap_InterestExpenseSubordinatedNotesAndDebentures_3261C78A441AE264DBCA7EEF7D59B1EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense, Subordinated Notes and Debentures </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseSubordinatedNotesAndDebentures" xlink:label="loc_us-gaap_InterestExpenseSubordinatedNotesAndDebentures_3261C78A441AE264DBCA7EEF7D59B1EE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase_A921BAEE2B30E95E1D267EEF7D5A0387_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase_A921BAEE2B30E95E1D267EEF7D5A0387" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>

<link:label id="lab_us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase_A921BAEE2B30E95E1D267EEF7D5A0387_label_en-US" xlink:label="lab_us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase_A921BAEE2B30E95E1D267EEF7D5A0387" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense, Securities Sold under Agreements to Repurchase </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase" xlink:label="loc_us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase_A921BAEE2B30E95E1D267EEF7D5A0387" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestExpense_2705BC37C67581ECEC517EEF7D5A54CA_totalLabel_en-US" xlink:label="lab_us-gaap_InterestExpense_2705BC37C67581ECEC517EEF7D5A54CA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total interest expense </link:label>

<link:label id="lab_us-gaap_InterestExpense_2705BC37C67581ECEC517EEF7D5A54CA_label_en-US" xlink:label="lab_us-gaap_InterestExpense_2705BC37C67581ECEC517EEF7D5A54CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_2705BC37C67581ECEC517EEF7D5A54CA" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestIncomeExpenseNet_3284F990AB2E7415EF647EEF7D5A1B13_totalLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_3284F990AB2E7415EF647EEF7D5A1B13" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net interest income </link:label>

<link:label id="lab_us-gaap_InterestIncomeExpenseNet_3284F990AB2E7415EF647EEF7D5A1B13_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_3284F990AB2E7415EF647EEF7D5A1B13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Income (Expense), Net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_3284F990AB2E7415EF647EEF7D5A1B13" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProvisionForLoanLeaseAndOtherLosses_57C7745C091CB580AEC37EEF7D5A385F_verboseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForLoanLeaseAndOtherLosses_57C7745C091CB580AEC37EEF7D5A385F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Provision for credit losses </link:label>

<link:label id="lab_us-gaap_ProvisionForLoanLeaseAndOtherLosses_57C7745C091CB580AEC37EEF7D5A385F_label_en-US" xlink:label="lab_us-gaap_ProvisionForLoanLeaseAndOtherLosses_57C7745C091CB580AEC37EEF7D5A385F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Provision for Loan, Lease, and Other Losses </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_57C7745C091CB580AEC37EEF7D5A385F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_1A4783217AE11C93B14F7EEF7D5A24BC_totalLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_1A4783217AE11C93B14F7EEF7D5A24BC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net interest income after provision for credit losses </link:label>

<link:label id="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_1A4783217AE11C93B14F7EEF7D5A24BC_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_1A4783217AE11C93B14F7EEF7D5A24BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Income (Expense), after Provision for Loan Loss </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_1A4783217AE11C93B14F7EEF7D5A24BC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NoninterestIncomeAbstract_A023809E2CE91F803C5E7EEF7D5A54E0_terseLabel_en-US" xlink:label="lab_us-gaap_NoninterestIncomeAbstract_A023809E2CE91F803C5E7EEF7D5A54E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-interest income: </link:label>

<link:label id="lab_us-gaap_NoninterestIncomeAbstract_A023809E2CE91F803C5E7EEF7D5A54E0_label_en-US" xlink:label="lab_us-gaap_NoninterestIncomeAbstract_A023809E2CE91F803C5E7EEF7D5A54E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noninterest Income [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoninterestIncomeAbstract" xlink:label="loc_us-gaap_NoninterestIncomeAbstract_A023809E2CE91F803C5E7EEF7D5A54E0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_92F245381A2F9A5036027EEF7D5A466F_terseLabel_en-US" xlink:label="lab_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_92F245381A2F9A5036027EEF7D5A466F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Service charges and fees </link:label>

<link:label id="lab_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_92F245381A2F9A5036027EEF7D5A466F_label_en-US" xlink:label="lab_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_92F245381A2F9A5036027EEF7D5A466F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fees and Commissions, Mortgage Banking and Servicing </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FeesAndCommissionsMortgageBankingAndServicing" xlink:label="loc_us-gaap_FeesAndCommissionsMortgageBankingAndServicing_92F245381A2F9A5036027EEF7D5A466F" xlink:type="locator"/>

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<link:label id="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF_terseLabel_en-US" xlink:label="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income from equity investments </link:label>

<link:label id="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF_label_en-US" xlink:label="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income from Equity Investments </link:label>

<link:label id="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF_documentation_en-US" xlink:label="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Income from equity investments </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_IncomefromEquityInvestments" xlink:label="loc_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF" xlink:to="lab_wal_IncomefromEquityInvestments_120174B864AC3529DA397EEF7D5A0EFF" xlink:type="arc"/>

<link:label id="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87_terseLabel_en-US" xlink:label="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Card income </link:label>

<link:label id="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87_label_en-US" xlink:label="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Card Income </link:label>

<link:label id="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87_documentation_en-US" xlink:label="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Card fees include interchange fees, credit card balance consolidation fees, balance transfer fees, late (delinquency) fees, returned check fees (on customer's credit card payment), cash advance fee, foreign currency fees, rush/expedited card fees, over-limit fee, and overdraft protection fees. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CardIncome" xlink:label="loc_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87" xlink:to="lab_wal_CardIncome_BA1AECB36481F2208BDB7EEF7D5A1E87" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency income </link:label>

<link:label id="lab_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7" xlink:to="lab_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_DF37348455C85850C70D7EEF7D5A62D7" xlink:type="arc"/>

<link:label id="lab_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5_terseLabel_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income from bank owned life insurance </link:label>

<link:label id="lab_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5_label_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Bank Owned Life Insurance Income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BankOwnedLifeInsuranceIncome" xlink:label="loc_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5" xlink:to="lab_us-gaap_BankOwnedLifeInsuranceIncome_1E1AC9C6C153CEC594A97EEF7D5A85F5" xlink:type="arc"/>

<link:label id="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A_terseLabel_en-US" xlink:label="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lending related income and gains (losses) on sale of loans, net </link:label>

<link:label id="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A_label_en-US" xlink:label="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lending related fees </link:label>

<link:label id="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A_documentation_en-US" xlink:label="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lending related fees </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Lendingrelatedfees" xlink:label="loc_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A" xlink:to="lab_wal_Lendingrelatedfees_564444D792D965D5D3317EEF7D5A509A" xlink:type="arc"/>

<link:label id="lab_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A_terseLabel_en-US" xlink:label="lab_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain (loss) on sales of investment securities, net </link:label>

<link:label id="lab_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A_label_en-US" xlink:label="lab_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Realized Gain (Loss) on Marketable Securities, Cost Method Investments, and Other Investments </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments" xlink:label="loc_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A" xlink:to="lab_us-gaap_RealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_9830131988DD66DDF58D7EEF7D5AA82A" xlink:type="arc"/>

<link:label id="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF_terseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair value gain (loss) adjustments on assets measured at fair value, net </link:label>

<link:label id="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF_label_en-US" xlink:label="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Securities, FV-NI, Unrealized Gain (Loss) </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF" xlink:to="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_F3B4ACD4D1EEB65E93A47EEF7D5AA9CF" xlink:type="arc"/>

<link:label id="lab_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809_terseLabel_en-US" xlink:label="lab_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other income </link:label>

<link:label id="lab_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809_label_en-US" xlink:label="lab_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noninterest Income, Other Operating Income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:label="loc_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809" xlink:to="lab_us-gaap_NoninterestIncomeOtherOperatingIncome_8E22D06B166493466CBA7EEF7D5A5809" xlink:type="arc"/>

<link:label id="lab_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29_totalLabel_en-US" xlink:label="lab_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total non-interest income </link:label>

<link:label id="lab_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29_label_en-US" xlink:label="lab_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noninterest Income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoninterestIncome" xlink:label="loc_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29" xlink:to="lab_us-gaap_NoninterestIncome_8ABFA53D1E0CCC092EE67EEF7D5A1C29" xlink:type="arc"/>

<link:label id="lab_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6_verboseLabel_en-US" xlink:label="lab_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Non-interest expense: </link:label>

<link:label id="lab_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6_label_en-US" xlink:label="lab_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noninterest Expense [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoninterestExpenseAbstract" xlink:label="loc_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6" xlink:to="lab_us-gaap_NoninterestExpenseAbstract_581FA7381AB826FE5DD37EEF7D5AB0C6" xlink:type="arc"/>

<link:label id="lab_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A_terseLabel_en-US" xlink:label="lab_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Salaries and employee benefits </link:label>

<link:label id="lab_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A_label_en-US" xlink:label="lab_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Labor and Related Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A" xlink:to="lab_us-gaap_LaborAndRelatedExpense_CF80862923E9D998F8967EEF7D5A871A" xlink:type="arc"/>

<link:label id="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B_terseLabel_en-US" xlink:label="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Legal, professional, and directors' fees </link:label>

<link:label id="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B_label_en-US" xlink:label="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Legal Professional And Director Fees </link:label>

<link:label id="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B_documentation_en-US" xlink:label="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The sum of the amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings, fees paid for consulting and professional services and fees paid to directors for service as a member of the board of directors. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_LegalProfessionalAndDirectorFees" xlink:label="loc_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B" xlink:to="lab_wal_LegalProfessionalAndDirectorFees_9B2494FE59FD82D8B5437EEF7D5A291B" xlink:type="arc"/>

<link:label id="lab_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C_terseLabel_en-US" xlink:label="lab_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Occupancy </link:label>

<link:label id="lab_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C_label_en-US" xlink:label="lab_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Occupancy, Net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OccupancyNet" xlink:label="loc_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C" xlink:to="lab_us-gaap_OccupancyNet_E9EE3E9A1C26FFE40AF47EEF7D5AB97C" xlink:type="arc"/>

<link:label id="lab_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0_terseLabel_en-US" xlink:label="lab_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposit costs </link:label>

<link:label id="lab_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0_label_en-US" xlink:label="lab_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Interest Expense Deposit Costs </link:label>

<link:label id="lab_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0_documentation_en-US" xlink:label="lab_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Deposit costs related to non-interest bearing deposits held by the Company for which the Company pays on behalf of customers based on deposit activity during the period </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NonInterestExpenseDepositCosts" xlink:label="loc_wal_NonInterestExpenseDepositCosts_451BEF8C438A7183A9177EEF7D5A55A0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39_terseLabel_en-US" xlink:label="lab_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Data processing </link:label>

<link:label id="lab_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39_label_en-US" xlink:label="lab_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Information Technology and Data Processing </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InformationTechnologyAndDataProcessing" xlink:label="loc_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39" xlink:to="lab_us-gaap_InformationTechnologyAndDataProcessing_73420448B38CF92B9D0A7EEF7D5A2F39" xlink:type="arc"/>

<link:label id="lab_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6_terseLabel_en-US" xlink:label="lab_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Insurance </link:label>

<link:label id="lab_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6_label_en-US" xlink:label="lab_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> General Insurance Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralInsuranceExpense" xlink:label="loc_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6" xlink:to="lab_us-gaap_GeneralInsuranceExpense_0C734C60BB9AE44899857EEF7D5A8CB6" xlink:type="arc"/>

<link:label id="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68_terseLabel_en-US" xlink:label="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loan and repossessed asset expenses </link:label>

<link:label id="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68_label_en-US" xlink:label="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loan And Repossessed Asset Expense </link:label>

<link:label id="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68_documentation_en-US" xlink:label="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The sum of expenditures for loan generating, monitoring and servicing and holding costs associated with other repossessed assets. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_LoanAndRepossessedAssetExpense" xlink:label="loc_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68" xlink:to="lab_wal_LoanAndRepossessedAssetExpense_EF4EB64129A1BD8BE3CE7EEF7D5AEC68" xlink:type="arc"/>

<link:label id="lab_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Development </link:label>

<link:label id="lab_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853_label_en-US" xlink:label="lab_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Development </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessDevelopment" xlink:label="loc_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853" xlink:to="lab_us-gaap_BusinessDevelopment_D63792D43B24021B878F7EEF7D5A0853" xlink:type="arc"/>

<link:label id="lab_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579_terseLabel_en-US" xlink:label="lab_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Marketing </link:label>

<link:label id="lab_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579_label_en-US" xlink:label="lab_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Marketing Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MarketingExpense" xlink:label="loc_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579" xlink:to="lab_us-gaap_MarketingExpense_329AB55B5F6FC7DB77F97EEF7D5A8579" xlink:type="arc"/>

<link:label id="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C_terseLabel_en-US" xlink:label="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Card expense </link:label>

<link:label id="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C_label_en-US" xlink:label="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Card expense </link:label>

<link:label id="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C_documentation_en-US" xlink:label="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amount of expenses related to credit card services. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Cardexpense" xlink:label="loc_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C" xlink:to="lab_wal_Cardexpense_CCD3E08523F89B0FDF597EEF7D5A5F9C" xlink:type="arc"/>

<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible amortization </link:label>

<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Intangible Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_3CE7BD0780EDE3E40F417EEF7D5ADBCF" xlink:type="arc"/>

<link:label id="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C_terseLabel_en-US" xlink:label="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net loss (gain) on sales / valuations of repossessed and other assets </link:label>

<link:label id="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C_label_en-US" xlink:label="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net </link:label>

<link:label id="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C_documentation_en-US" xlink:label="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Net loss on sales/valuations of repossessed assets and bank premises, net. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet" xlink:label="loc_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C" xlink:to="lab_wal_NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet_4FE7A92BD68288668D567EEF7D5AA77C" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other expense </link:label>

<link:label id="lab_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251_label_en-US" xlink:label="lab_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Noninterest Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="loc_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251" xlink:to="lab_us-gaap_OtherNoninterestExpense_E3683600437EF242E9187EEF7D5A3251" xlink:type="arc"/>

<link:label id="lab_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128_totalLabel_en-US" xlink:label="lab_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total non-interest expense </link:label>

<link:label id="lab_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128_label_en-US" xlink:label="lab_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noninterest Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="loc_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128" xlink:to="lab_us-gaap_NoninterestExpense_B549949E66654583470D7EEF7D5A8128" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_9CDF07E8E1F7D181DF057EEF7D5A3A2D_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_9CDF07E8E1F7D181DF057EEF7D5A3A2D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Income before provision for income taxes </link:label>

<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_9CDF07E8E1F7D181DF057EEF7D5A3A2D_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_9CDF07E8E1F7D181DF057EEF7D5A3A2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_9CDF07E8E1F7D181DF057EEF7D5A3A2D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_7E72C9905010454C7C037EEF7D5ABDAE_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_7E72C9905010454C7C037EEF7D5ABDAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income tax expense </link:label>

<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_7E72C9905010454C7C037EEF7D5ABDAE_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_7E72C9905010454C7C037EEF7D5ABDAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Expense (Benefit) </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_7E72C9905010454C7C037EEF7D5ABDAE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetIncomeLoss_BDB7A3D1CEF293570A477EEF7D5A4EE0_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_BDB7A3D1CEF293570A477EEF7D5A4EE0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_BDB7A3D1CEF293570A477EEF7D5A4EE0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EarningsPerShareAbstract_4DBEF2AD4A8669109C5A7EEF7D5A2BF6_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_4DBEF2AD4A8669109C5A7EEF7D5A2BF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earnings per share: </link:label>

<link:label id="lab_us-gaap_EarningsPerShareAbstract_4DBEF2AD4A8669109C5A7EEF7D5A2BF6_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_4DBEF2AD4A8669109C5A7EEF7D5A2BF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_4DBEF2AD4A8669109C5A7EEF7D5A2BF6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EarningsPerShareBasic_13E00A0FDBF1DECD54437EEF7D5AEB5E_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_13E00A0FDBF1DECD54437EEF7D5AEB5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Basic </link:label>

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<link:label id="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_3374B9A9BF000DD9F17CF2487E6326E4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_3374B9A9BF000DD9F17CF2487E6326E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] </link:label>

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<link:label id="lab_srt_CreditRatingFitchAxis_C4F94522F9179F572197F2487E430C6A_terseLabel_en-US" xlink:label="lab_srt_CreditRatingFitchAxis_C4F94522F9179F572197F2487E430C6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Rating, Fitch [Axis] </link:label>

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<link:label id="lab_us-gaap_FinancialInstrumentPerformanceStatusDomain_F41F649B24E275F760A6F2487E4457D5_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentPerformanceStatusDomain_F41F649B24E275F760A6F2487E4457D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instrument Performance Status [Domain] </link:label>

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<link:label id="lab_us-gaap_LienCategoryAxis_C341A08DD1BCD2896D11F2487E456D15_terseLabel_en-US" xlink:label="lab_us-gaap_LienCategoryAxis_C341A08DD1BCD2896D11F2487E456D15" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lien Category [Axis] </link:label>

<link:label id="lab_us-gaap_LienCategoryAxis_C341A08DD1BCD2896D11F2487E456D15_label_en-US" xlink:label="lab_us-gaap_LienCategoryAxis_C341A08DD1BCD2896D11F2487E456D15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lien Category [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LienCategoryAxis" xlink:label="loc_us-gaap_LienCategoryAxis_C341A08DD1BCD2896D11F2487E456D15" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LienCategoryDomain_94C64684833F5CB7DBDDF2487E4548B7_terseLabel_en-US" xlink:label="lab_us-gaap_LienCategoryDomain_94C64684833F5CB7DBDDF2487E4548B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lien Category [Domain] </link:label>

<link:label id="lab_us-gaap_LienCategoryDomain_94C64684833F5CB7DBDDF2487E4548B7_label_en-US" xlink:label="lab_us-gaap_LienCategoryDomain_94C64684833F5CB7DBDDF2487E4548B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lien Category [Domain] </link:label>

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<link:label id="lab_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_65F815C2A9CE6393EF1EF2487E457DC5_terseLabel_en-US" xlink:label="lab_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_65F815C2A9CE6393EF1EF2487E457DC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans Insured or Guaranteed by Government Authorities [Domain] </link:label>

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<link:label id="lab_us-gaap_LoanToValueAxis_2BD43F70D586E77E9FEAF2487E46839B_label_en-US" xlink:label="lab_us-gaap_LoanToValueAxis_2BD43F70D586E77E9FEAF2487E46839B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt-to-Value [Axis] </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CoreAndNonCoreStatusAxis" xlink:label="loc_us-gaap_CoreAndNonCoreStatusAxis_726C305939CF8AAFB044F2487E46EC68" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentLineItems_EDC7BF0C736255835614F2487E4711BD_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentLineItems_EDC7BF0C736255835614F2487E4711BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Credit Quality Indicator [Line Items] </link:label>

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<link:label id="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestment_C4B8B46F446DB80256B1F2487E4843A8_totalLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableRecordedInvestment_C4B8B46F446DB80256B1F2487E4843A8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total impaired loans </link:label>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_605F6F84E041C3A44441F2487726928A_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_605F6F84E041C3A44441F2487726928A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Abstract] </link:label>

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<link:label id="lab_wal_ShareBasedCompensationStockOptionsAbstract_FC2BE4C506DB61492E44830E0F8C645C_label_en-US" xlink:label="lab_wal_ShareBasedCompensationStockOptionsAbstract_FC2BE4C506DB61492E44830E0F8C645C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-Based Compensation - Stock Options [Abstract] </link:label>

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<link:label id="lab_srt_TitleOfIndividualAxis_D6A3A65ED01623DC589D830E0F8D18A6_label_en-US" xlink:label="lab_srt_TitleOfIndividualAxis_D6A3A65ED01623DC589D830E0F8D18A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of Individual [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis" xlink:label="loc_srt_TitleOfIndividualAxis_D6A3A65ED01623DC589D830E0F8D18A6" xlink:type="locator"/>

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<link:label id="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_204DF8124AEAD76F0166830E0F8D92E5_terseLabel_en-US" xlink:label="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_204DF8124AEAD76F0166830E0F8D92E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Title of Individual [Domain] </link:label>

<link:label id="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_204DF8124AEAD76F0166830E0F8D92E5_label_en-US" xlink:label="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_204DF8124AEAD76F0166830E0F8D92E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of Individual [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_204DF8124AEAD76F0166830E0F8D92E5" xlink:type="locator"/>

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<link:label id="lab_srt_ExecutiveOfficerMember_5633ECE3303659E3C019830E0F8D5ED5_terseLabel_en-US" xlink:label="lab_srt_ExecutiveOfficerMember_5633ECE3303659E3C019830E0F8D5ED5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Executive Officer [Member] </link:label>

<link:label id="lab_srt_ExecutiveOfficerMember_5633ECE3303659E3C019830E0F8D5ED5_label_en-US" xlink:label="lab_srt_ExecutiveOfficerMember_5633ECE3303659E3C019830E0F8D5ED5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Executive Officer [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ExecutiveOfficerMember" xlink:label="loc_srt_ExecutiveOfficerMember_5633ECE3303659E3C019830E0F8D5ED5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PlanNameAxis_FD8494ECA3018CE74385830E0F8EA7F5_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_FD8494ECA3018CE74385830E0F8EA7F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name [Axis] </link:label>

<link:label id="lab_us-gaap_PlanNameAxis_FD8494ECA3018CE74385830E0F8EA7F5_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_FD8494ECA3018CE74385830E0F8EA7F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Name [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_FD8494ECA3018CE74385830E0F8EA7F5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name [Domain] </link:label>

<link:label id="lab_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Name [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724" xlink:to="lab_us-gaap_PlanNameDomain_074DC0E1A662F4FC4EC0830E0F8F0724" xlink:type="arc"/>

<link:label id="lab_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE_terseLabel_en-US" xlink:label="lab_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Date [Axis] </link:label>

<link:label id="lab_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE_label_en-US" xlink:label="lab_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Date [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardDateAxis" xlink:label="loc_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE" xlink:to="lab_us-gaap_AwardDateAxis_8EDE45A6A8455B4F2A9B830E0F8F83EE" xlink:type="arc"/>

<link:label id="lab_us-gaap_AwardDateDomain_B5A598CC31200313E593830E0F8F59D1_terseLabel_en-US" xlink:label="lab_us-gaap_AwardDateDomain_B5A598CC31200313E593830E0F8F59D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Date [Domain] </link:label>

<link:label id="lab_us-gaap_AwardDateDomain_B5A598CC31200313E593830E0F8F59D1_label_en-US" xlink:label="lab_us-gaap_AwardDateDomain_B5A598CC31200313E593830E0F8F59D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Date [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaap_AwardDateDomain_B5A598CC31200313E593830E0F8F59D1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AwardTypeAxis_7087E762A55597DC34C6830E0F8FB45B_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_7087E762A55597DC34C6830E0F8FB45B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>

<link:label id="lab_us-gaap_AwardTypeAxis_7087E762A55597DC34C6830E0F8FB45B_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_7087E762A55597DC34C6830E0F8FB45B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_7087E762A55597DC34C6830E0F8FB45B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Domain] </link:label>

<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Type [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_816F497747FB30CFAA33830E0F8FFE0D" xlink:type="arc"/>

<link:label id="lab_us-gaap_RestrictedStockMember_21D6082C70FCFE050439830E0F90D5F4_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_21D6082C70FCFE050439830E0F90D5F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Stock [Member] </link:label>

<link:label id="lab_us-gaap_RestrictedStockMember_21D6082C70FCFE050439830E0F90D5F4_label_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_21D6082C70FCFE050439830E0F90D5F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Stock [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_21D6082C70FCFE050439830E0F90D5F4" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PerformanceSharesMember_BC1A673EFF323C896981830E0F900C68_terseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_BC1A673EFF323C896981830E0F900C68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Performance Shares [Member] </link:label>

<link:label id="lab_us-gaap_PerformanceSharesMember_BC1A673EFF323C896981830E0F900C68_label_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_BC1A673EFF323C896981830E0F900C68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Performance Shares [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_BC1A673EFF323C896981830E0F900C68" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StatementClassOfStockAxis_5D9FB0BACBF9E1C990A9830E0F90A846_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_5D9FB0BACBF9E1C990A9830E0F90A846" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Stock [Axis] </link:label>

<link:label id="lab_us-gaap_StatementClassOfStockAxis_5D9FB0BACBF9E1C990A9830E0F90A846_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_5D9FB0BACBF9E1C990A9830E0F90A846" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_5D9FB0BACBF9E1C990A9830E0F90A846" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ClassOfStockDomain_443D007BCEFD5D042526830E0F90A681_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_443D007BCEFD5D042526830E0F90A681" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>

<link:label id="lab_us-gaap_ClassOfStockDomain_443D007BCEFD5D042526830E0F90A681_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_443D007BCEFD5D042526830E0F90A681" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>

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<link:label id="lab_srt_RangeAxis_3B243ABC02E41C9C47DA830E0F910CC1_label_en-US" xlink:label="lab_srt_RangeAxis_3B243ABC02E41C9C47DA830E0F910CC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statistical Measurement [Axis] </link:label>

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<link:label id="lab_srt_RangeMember_07A89989838EF05B6C65830E0F917856_label_en-US" xlink:label="lab_srt_RangeMember_07A89989838EF05B6C65830E0F917856" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statistical Measurement [Domain] </link:label>

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<link:label id="lab_us-gaap_VestingAxis_1069772B0A6635BDAE40830E0F913EAB_terseLabel_en-US" xlink:label="lab_us-gaap_VestingAxis_1069772B0A6635BDAE40830E0F913EAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vesting [Axis] </link:label>

<link:label id="lab_us-gaap_VestingAxis_1069772B0A6635BDAE40830E0F913EAB_label_en-US" xlink:label="lab_us-gaap_VestingAxis_1069772B0A6635BDAE40830E0F913EAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Vesting [Axis] </link:label>

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<link:label id="lab_dei_EntityEmergingGrowthCompany_D20B8605C3E33D5160658D7639FA868C_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_D20B8605C3E33D5160658D7639FA868C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Emerging Growth Company </link:label>

<link:label id="lab_dei_EntityEmergingGrowthCompany_D20B8605C3E33D5160658D7639FA868C_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_D20B8605C3E33D5160658D7639FA868C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Emerging Growth Company </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_D20B8605C3E33D5160658D7639FA868C" xlink:type="locator"/>

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<link:label id="lab_dei_EntityCommonStockSharesOutstanding_977653AB58E696CE4B2E8D7639FCCC2D_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_977653AB58E696CE4B2E8D7639FCCC2D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>

<link:label id="lab_dei_EntityCommonStockSharesOutstanding_977653AB58E696CE4B2E8D7639FCCC2D_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_977653AB58E696CE4B2E8D7639FCCC2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_977653AB58E696CE4B2E8D7639FCCC2D" xlink:type="locator"/>

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<link:label id="lab_dei_EntityShellCompany_556F754C3627D061D4778D7639FC7CA1_terseLabel_en-US" xlink:label="lab_dei_EntityShellCompany_556F754C3627D061D4778D7639FC7CA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Shell Company </link:label>

<link:label id="lab_dei_EntityShellCompany_556F754C3627D061D4778D7639FC7CA1_label_en-US" xlink:label="lab_dei_EntityShellCompany_556F754C3627D061D4778D7639FC7CA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Shell Company </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityShellCompany" xlink:label="loc_dei_EntityShellCompany_556F754C3627D061D4778D7639FC7CA1" xlink:type="locator"/>

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<link:label id="lab_dei_EntityPublicFloat_0333842F6C5A101775C38D7639FCD922_terseLabel_en-US" xlink:label="lab_dei_EntityPublicFloat_0333842F6C5A101775C38D7639FCD922" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Public Float </link:label>

<link:label id="lab_dei_EntityPublicFloat_0333842F6C5A101775C38D7639FCD922_label_en-US" xlink:label="lab_dei_EntityPublicFloat_0333842F6C5A101775C38D7639FCD922" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Public Float </link:label>

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<link:label id="lab_dei_EntityFileNumber_6D81F24AF32F6D967A7F8D7639FD53E2_terseLabel_en-US" xlink:label="lab_dei_EntityFileNumber_6D81F24AF32F6D967A7F8D7639FD53E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity File Number </link:label>

<link:label id="lab_dei_EntityFileNumber_6D81F24AF32F6D967A7F8D7639FD53E2_label_en-US" xlink:label="lab_dei_EntityFileNumber_6D81F24AF32F6D967A7F8D7639FD53E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity File Number </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:label="loc_dei_EntityFileNumber_6D81F24AF32F6D967A7F8D7639FD53E2" xlink:type="locator"/>

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<link:label id="lab_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E_terseLabel_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Tax Identification Number </link:label>

<link:label id="lab_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E_label_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Tax Identification Number </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:label="loc_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E" xlink:to="lab_dei_EntityTaxIdentificationNumber_BCE89C2822298D9FC2828D7639FDC48E" xlink:type="arc"/>

<link:label id="lab_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, Postal Zip Code </link:label>

<link:label id="lab_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80_label_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, Postal Zip Code </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:label="loc_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80" xlink:to="lab_dei_EntityAddressPostalZipCode_A9389F3E625806D24FFE8D7639FDDB80" xlink:type="arc"/>

<link:label id="lab_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Security Exchange Name </link:label>

<link:label id="lab_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5_label_en-US" xlink:label="lab_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Security Exchange Name </link:label>

<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:label="loc_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5" xlink:to="lab_dei_SecurityExchangeName_55056BC032A167968F478D7639FE77F5" xlink:type="arc"/>

<link:label id="lab_us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock_39CF812A60BFDB7D0F96F2487682D910_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock_39CF812A60BFDB7D0F96F2487682D910" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Summary of Actual Capital Amount and Ratio </link:label>

<link:label id="lab_us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock_39CF812A60BFDB7D0F96F2487682D910_label_en-US" xlink:label="lab_us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock_39CF812A60BFDB7D0F96F2487682D910" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock" xlink:label="loc_us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock_39CF812A60BFDB7D0F96F2487682D910" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_83319674C52A27103FF4F2487E611331_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_83319674C52A27103FF4F2487E611331" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Accounting </link:label>

<link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_83319674C52A27103FF4F2487E611331_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_83319674C52A27103FF4F2487E611331" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Disclosures [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_83319674C52A27103FF4F2487E611331" xlink:type="locator"/>

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<link:label id="lab_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_7636BEFE4D825116387283576F46B8ED_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_7636BEFE4D825116387283576F46B8ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount </link:label>

<link:label id="lab_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_7636BEFE4D825116387283576F46B8ED_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_7636BEFE4D825116387283576F46B8ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_7636BEFE4D825116387283576F46B8ED" xlink:type="locator"/>

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<link:label id="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_8548126965D35DDFCCEE83576F46E5DE_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_8548126965D35DDFCCEE83576F46E5DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets </link:label>

<link:label id="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_8548126965D35DDFCCEE83576F46E5DE_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_8548126965D35DDFCCEE83576F46E5DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets" xlink:label="loc_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets_8548126965D35DDFCCEE83576F46E5DE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities_B33C8263F7E4E47994FC837651D7472F_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities_B33C8263F7E4E47994FC837651D7472F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities </link:label>

<link:label id="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities_B33C8263F7E4E47994FC837651D7472F_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities_B33C8263F7E4E47994FC837651D7472F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities" xlink:label="loc_us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities_B33C8263F7E4E47994FC837651D7472F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_475F7D5452D448A3B9A583576F460605_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_475F7D5452D448A3B9A583576F460605" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of tax credit investments </link:label>

<link:label id="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_475F7D5452D448A3B9A583576F460605_label_en-US" xlink:label="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_475F7D5452D448A3B9A583576F460605" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization Method Qualified Affordable Housing Project Investments, Amortization </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization" xlink:label="loc_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_475F7D5452D448A3B9A583576F460605" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_C73E28B85006680D3662F248768BD0DC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_C73E28B85006680D3662F248768BD0DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] </link:label>

<link:label id="lab_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_C73E28B85006680D3662F248768BD0DC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_C73E28B85006680D3662F248768BD0DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_C73E28B85006680D3662F248768BD0DC" xlink:type="locator"/>

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<link:label id="lab_wal_QuarterlyFinancialDataDisclosureAbstract_1EDB557BE957D4F04C1AF2487B364334_label_en-US" xlink:label="lab_wal_QuarterlyFinancialDataDisclosureAbstract_1EDB557BE957D4F04C1AF2487B364334" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Quarterly Financial Data Disclosure [Abstract] </link:label>

<link:label id="lab_wal_QuarterlyFinancialDataDisclosureAbstract_1EDB557BE957D4F04C1AF2487B364334_documentation_en-US" xlink:label="lab_wal_QuarterlyFinancialDataDisclosureAbstract_1EDB557BE957D4F04C1AF2487B364334" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Quarterly Financial Data Disclosure [Abstract] </link:label>

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<link:label id="lab_srt_ScheduleOfCondensedFinancialStatementsTableTextBlock_DDFB2D9A26E94BCD1A16F2487B3744F0_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedFinancialStatementsTableTextBlock_DDFB2D9A26E94BCD1A16F2487B3744F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Financial Statements [Table Text Block] </link:label>

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<link:label id="lab_wal_ParentCompanyFinancialInformationAbstract_1089657A6A65EF7486423580950B6C25_documentation_en-US" xlink:label="lab_wal_ParentCompanyFinancialInformationAbstract_1089657A6A65EF7486423580950B6C25" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Parent Company Financial Information [Abstract] </link:label>

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<link:label id="lab_srt_CondensedFinancialStatementsCaptionsLineItems_48054323E09EBB1C0DBC3580950D28F1_label_en-US" xlink:label="lab_srt_CondensedFinancialStatementsCaptionsLineItems_48054323E09EBB1C0DBC3580950D28F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Financial Statements, Captions [Line Items] </link:label>

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<link:label id="lab_us-gaap_InvestmentIncomeDividend_AD244CE49A476F8603493580950DA3BF_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentIncomeDividend_AD244CE49A476F8603493580950DA3BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends from subsidiaries </link:label>

<link:label id="lab_us-gaap_InvestmentIncomeDividend_AD244CE49A476F8603493580950DA3BF_label_en-US" xlink:label="lab_us-gaap_InvestmentIncomeDividend_AD244CE49A476F8603493580950DA3BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investment Income, Dividend </link:label>

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<link:label id="lab_us-gaap_InterestIncomeOther_AC310F9933C67841C3BC3580950E62C8_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeOther_AC310F9933C67841C3BC3580950E62C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest income </link:label>

<link:label id="lab_us-gaap_InterestIncomeOther_AC310F9933C67841C3BC3580950E62C8_label_en-US" xlink:label="lab_us-gaap_InterestIncomeOther_AC310F9933C67841C3BC3580950E62C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Income, Other </link:label>

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<link:label id="lab_us-gaap_Revenues_53632CE73E50E5E2931A3580950EF08E_label_en-US" xlink:label="lab_us-gaap_Revenues_53632CE73E50E5E2931A3580950EF08E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenues </link:label>

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<link:label id="lab_us-gaap_OperatingExpenses_3E0C0E289DE8A31C4DDF3580950F0ACE_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_3E0C0E289DE8A31C4DDF3580950F0ACE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total expense </link:label>

<link:label id="lab_us-gaap_OperatingExpenses_3E0C0E289DE8A31C4DDF3580950F0ACE_label_en-US" xlink:label="lab_us-gaap_OperatingExpenses_3E0C0E289DE8A31C4DDF3580950F0ACE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Expenses </link:label>

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<link:label id="lab_wal_IncomeBeforeEquityinUndistributedEarningsofSubsidiaries_2DB8193AB90623E2402E35809510A770_totalLabel_en-US" xlink:label="lab_wal_IncomeBeforeEquityinUndistributedEarningsofSubsidiaries_2DB8193AB90623E2402E35809510A770" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Income before equity in undistributed earnings of subsidiaries </link:label>

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<link:label id="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_C8C395DBA698C08D70B43580951069D5_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_C8C395DBA698C08D70B43580951069D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity in undistributed earnings of subsidiaries </link:label>

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<link:label id="lab_wal_FinancialLiabilityInstrumentsFairValueOptionMember_3C73262E5131FF845E7F40797EEDFEFB_terseLabel_en-US" xlink:label="lab_wal_FinancialLiabilityInstrumentsFairValueOptionMember_3C73262E5131FF845E7F40797EEDFEFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Liability Instruments, Fair Value Option [Member] </link:label>

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<link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_CF9B83B1F196F14D369D839692B66A93" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3D00E604892A0F376183839692B6EBA9_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3D00E604892A0F376183839692B6EBA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value </link:label>

<link:label id="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3D00E604892A0F376183839692B6EBA9_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3D00E604892A0F376183839692B6EBA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue" xlink:label="loc_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3D00E604892A0F376183839692B6EBA9" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Asset, Fair Value, Gross Asset </link:label>

<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Asset, Fair Value, Gross Asset </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_940050A0000BF09B4123839692B6BC59" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Liability, Fair Value, Gross Liability </link:label>

<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Liability, Fair Value, Gross Liability </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_4287C97FD0FAD97528CA839692B67DCE" xlink:type="arc"/>

<link:label id="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7_terseLabel_en-US" xlink:label="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Instruments Notional Amount Netting Adjustments </link:label>

<link:label id="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7_label_en-US" xlink:label="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Instruments Notional Amount Netting Adjustments </link:label>

<link:label id="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7_documentation_en-US" xlink:label="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Derivative instruments notional amount netting adjustments. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_DerivativeInstrumentsNotionalAmountNettingAdjustments" xlink:label="loc_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7" xlink:to="lab_wal_DerivativeInstrumentsNotionalAmountNettingAdjustments_9AB8949FAFEB74DAFA3F839692B674F7" xlink:type="arc"/>

<link:label id="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994_negatedTerseLabel_en-US" xlink:label="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Netting Adjustments </link:label>

<link:label id="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994_label_en-US" xlink:label="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Netting Adjustments </link:label>

<link:label id="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994_documentation_en-US" xlink:label="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Derivative netting adjustments after taking into consideration master netting agreements. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_DerivativeNettingAdjustments" xlink:label="loc_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994" xlink:to="lab_wal_DerivativeNettingAdjustments_BA7F021961213268A3A4839692B62994" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeAssets_8386AEBE67558D872915839692B6A15F_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssets_8386AEBE67558D872915839692B6A15F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Positive NPVs </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_8386AEBE67558D872915839692B6A15F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DerivativeLiabilities_EF102DD3B20FD5F418D0839692B62166_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilities_EF102DD3B20FD5F418D0839692B62166" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Negative NPVs </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_EF102DD3B20FD5F418D0839692B62166" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilities_EF102DD3B20FD5F418D0839692B62166" xlink:to="lab_us-gaap_DerivativeLiabilities_EF102DD3B20FD5F418D0839692B62166" xlink:type="arc"/>

<link:label id="lab_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Past Due [Table] </link:label>

<link:label id="lab_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Past Due [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfFinancingReceivablesPastDueTable" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC" xlink:to="lab_us-gaap_ScheduleOfFinancingReceivablesPastDueTable_29F5AFFCA7A83186879E825B43C17BAC" xlink:type="arc"/>

<link:label id="lab_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21_terseLabel_en-US" xlink:label="lab_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Performing Financial Instruments [Member] </link:label>

<link:label id="lab_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21_label_en-US" xlink:label="lab_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Performing Financial Instruments [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PerformingFinancingReceivableMember" xlink:label="loc_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21" xlink:to="lab_us-gaap_PerformingFinancingReceivableMember_CE6178EAC2F24D8841DD825DDCCF8E21" xlink:type="arc"/>

<link:label id="lab_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49_terseLabel_en-US" xlink:label="lab_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Nonperforming Financial Instruments [Member] </link:label>

<link:label id="lab_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49_label_en-US" xlink:label="lab_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nonperforming Financial Instruments [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonperformingFinancingReceivableMember" xlink:label="loc_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49" xlink:to="lab_us-gaap_NonperformingFinancingReceivableMember_EAC40EE9E7CC26DEF749825FBC427C49" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Asset, Period Past Due [Axis] </link:label>

<link:label id="lab_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0_label_en-US" xlink:label="lab_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Asset, Period Past Due [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0" xlink:to="lab_us-gaap_FinancingReceivablesPeriodPastDueAxis_C8FF3BF8ADF647548D76825B43C24FB0" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Asset, Period Past Due [Domain] </link:label>

<link:label id="lab_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE_label_en-US" xlink:label="lab_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Asset, Period Past Due [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE" xlink:to="lab_us-gaap_FinancingReceivablesPeriodPastDueDomain_92D3B773D8EA13CDA892825B43C273FE" xlink:type="arc"/>

<link:label id="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189_terseLabel_en-US" xlink:label="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-accrual loans [Member] </link:label>

<link:label id="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189_label_en-US" xlink:label="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non Accrual Loans [Member] </link:label>

<link:label id="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189_documentation_en-US" xlink:label="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Non accrual loans. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NonAccrualLoansMember" xlink:label="loc_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189" xlink:to="lab_wal_NonAccrualLoansMember_ED7658FB1A2A8EFE5625825B43C24189" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Asset, 30 to 59 Days Past Due [Member] </link:label>

<link:label id="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E_label_en-US" xlink:label="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Asset, 30 to 59 Days Past Due [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivables30To59DaysPastDueMember" xlink:label="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E" xlink:to="lab_us-gaap_FinancingReceivables30To59DaysPastDueMember_C5EFFDA5837D10476A4A825B43C2E81E" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Asset, 60 to 89 Days Past Due [Member] </link:label>

<link:label id="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E_label_en-US" xlink:label="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Asset, 60 to 89 Days Past Due [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivables60To89DaysPastDueMember" xlink:label="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E" xlink:to="lab_us-gaap_FinancingReceivables60To89DaysPastDueMember_0EFF90FEC8C63EE5342A825B43C3C30E" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Asset, Equal to or Greater than 90 Days Past Due [Member] </link:label>

<link:label id="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383_label_en-US" xlink:label="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Asset, Equal to or Greater than 90 Days Past Due [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember" xlink:label="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383" xlink:to="lab_us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_01FCCCEA74D71516A88B825B43C3B383" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Receivable Type [Axis] </link:label>

<link:label id="lab_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9_label_en-US" xlink:label="lab_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivable Type [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9" xlink:to="lab_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_CD246B194B31FE8EFE25825B43C326A9" xlink:type="arc"/>

<link:label id="lab_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42_terseLabel_en-US" xlink:label="lab_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Receivable [Domain] </link:label>

<link:label id="lab_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42_label_en-US" xlink:label="lab_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivable [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42" xlink:to="lab_us-gaap_ReceivableTypeDomain_482551B69B2A3087320C825B43C3DF42" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Past Due [Line Items] </link:label>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Past Due [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems_016B30250D464FB9D927825B43C6D155" xlink:type="arc"/>

<link:label id="lab_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373_totalLabel_en-US" xlink:label="lab_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total </link:label>

<link:label id="lab_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373_label_en-US" xlink:label="lab_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, after Allowance for Credit Loss </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesReceivableNet" xlink:label="loc_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373" xlink:to="lab_us-gaap_NotesReceivableNet_FAD0A1CC9D9993A9F0AA825B43C6D373" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Nonaccrual </link:label>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Nonaccrual </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_FE30D715B976B89D8DD1825B43C75F59" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, 90 Days or More Past Due, Still Accruing </link:label>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, 90 Days or More Past Due, Still Accruing </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_AC5B178E2B74B553CF26825B43C78AF6" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_7E4D2BD811689ECEFFCC82853E586767_verboseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_7E4D2BD811689ECEFFCC82853E586767" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Loans past due 90 days or more on accrual status </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_7E4D2BD811689ECEFFCC82853E586767" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_7E4D2BD811689ECEFFCC82853E586767" xlink:to="lab_us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_7E4D2BD811689ECEFFCC82853E586767" xlink:type="arc"/>

<link:label id="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Troubled debt restructured loans </link:label>

<link:label id="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Troubled Debt Restructuring </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableModificationsRecordedInvestment" xlink:label="loc_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285" xlink:to="lab_us-gaap_FinancingReceivableModificationsRecordedInvestment_87CD5AC6169CB0D1B78D82853E583285" xlink:type="arc"/>

<link:label id="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2_totalLabel_en-US" xlink:label="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total nonperforming loans </link:label>

<link:label id="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2_label_en-US" xlink:label="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non Performing Loans </link:label>

<link:label id="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2_documentation_en-US" xlink:label="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Nonperforming loans. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NonPerformingLoans" xlink:label="loc_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2" xlink:to="lab_wal_NonPerformingLoans_8CDB6D676BF548B0515182853E5834E2" xlink:type="arc"/>

<link:label id="lab_us-gaap_ForeclosedAssets_3DC316D5F5F3FE3D58A182853E596C02_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeclosedAssets_3DC316D5F5F3FE3D58A182853E596C02" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other assets acquired through foreclosure, net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeclosedAssets" xlink:label="loc_us-gaap_ForeclosedAssets_3DC316D5F5F3FE3D58A182853E596C02" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeclosedAssets_3DC316D5F5F3FE3D58A182853E596C02" xlink:to="lab_us-gaap_ForeclosedAssets_3DC316D5F5F3FE3D58A182853E596C02" xlink:type="arc"/>

<link:label id="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C_totalLabel_en-US" xlink:label="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total nonperforming assets </link:label>

<link:label id="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C_label_en-US" xlink:label="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non Performing Assets </link:label>

<link:label id="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C_documentation_en-US" xlink:label="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Nonperforming assets. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NonPerformingAssets" xlink:label="loc_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C" xlink:to="lab_wal_NonPerformingAssets_58ACE5DD504AE0C8466F82853E59FC3C" xlink:type="arc"/>

<link:label id="lab_us-gaap_LeasesAbstract_4DFA63AD91235308ACC635F40C4717E5_label_en-US" xlink:label="lab_us-gaap_LeasesAbstract_4DFA63AD91235308ACC635F40C4717E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Leases [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeasesAbstract" xlink:label="loc_us-gaap_LeasesAbstract_4DFA63AD91235308ACC635F40C4717E5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeasesAbstract_4DFA63AD91235308ACC635F40C4717E5" xlink:to="lab_us-gaap_LeasesAbstract_4DFA63AD91235308ACC635F40C4717E5" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_992A402E6F09C4A065B4360D804A7304_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_992A402E6F09C4A065B4360D804A7304" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Maturity [Table Text Block] </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_992A402E6F09C4A065B4360D804A7304_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_992A402E6F09C4A065B4360D804A7304" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Maturity [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_992A402E6F09C4A065B4360D804A7304" xlink:type="locator"/>

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<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3E4D1BA1D9CCBBF28D80F2487AF98A7E_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3E4D1BA1D9CCBBF28D80F2487AF98A7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets Disclosure [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3E4D1BA1D9CCBBF28D80F2487AF98A7E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_2540053DEC581A566C67F2487AF90012_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_2540053DEC581A566C67F2487AF90012" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets Disclosure [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_2540053DEC581A566C67F2487AF90012" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccountingPoliciesAbstract_225F0CD14824B2D052B18D606264D437_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_225F0CD14824B2D052B18D606264D437" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Policies [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_225F0CD14824B2D052B18D606264D437" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_225F0CD14824B2D052B18D606264D437" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_225F0CD14824B2D052B18D606264D437" xlink:type="arc"/>

<link:label id="lab_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3_terseLabel_en-US" xlink:label="lab_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Repurchase Agreements, Collateral, Policy [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3_label_en-US" xlink:label="lab_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repurchase Agreements, Collateral, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepurchaseAgreementsCollateralPolicy" xlink:label="loc_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3" xlink:to="lab_us-gaap_RepurchaseAgreementsCollateralPolicy_D2EEA18C0BFBE2493E3C8D6062642FE3" xlink:type="arc"/>

<link:label id="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04" xlink:to="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_5E8DA774D9B7EB25B8C08D606264FC04" xlink:type="arc"/>

<link:label id="lab_us-gaap_StockholdersEquityPolicyTextBlock_E629DB6F04F5AA9D462A8D60664BD1CE_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityPolicyTextBlock_E629DB6F04F5AA9D462A8D60664BD1CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends </link:label>

<link:label id="lab_us-gaap_StockholdersEquityPolicyTextBlock_E629DB6F04F5AA9D462A8D60664BD1CE_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityPolicyTextBlock_E629DB6F04F5AA9D462A8D60664BD1CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityPolicyTextBlock" xlink:label="loc_us-gaap_StockholdersEquityPolicyTextBlock_E629DB6F04F5AA9D462A8D60664BD1CE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_TreasuryStockTextBlock_F524A18EDCB48316C1CE8D60626477D0_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockTextBlock_F524A18EDCB48316C1CE8D60626477D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Text Block] </link:label>

<link:label id="lab_us-gaap_TreasuryStockTextBlock_F524A18EDCB48316C1CE8D60626477D0_label_en-US" xlink:label="lab_us-gaap_TreasuryStockTextBlock_F524A18EDCB48316C1CE8D60626477D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockTextBlock" xlink:label="loc_us-gaap_TreasuryStockTextBlock_F524A18EDCB48316C1CE8D60626477D0" xlink:type="locator"/>

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<link:label id="lab_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E_terseLabel_en-US" xlink:label="lab_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Nature of Operation </link:label>

<link:label id="lab_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E_label_en-US" xlink:label="lab_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nature Of Operation Policy [Text Block] </link:label>

<link:label id="lab_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E_documentation_en-US" xlink:label="lab_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Nature of operation. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NatureOfOperationPolicyTextBlock" xlink:label="loc_wal_NatureOfOperationPolicyTextBlock_D5DAA5801CD462DE008B8D606273EF7E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Basis of Presentation </link:label>

<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Basis of Accounting, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1EBFF8B9D2DE5462ADFD8D6062737F5B" xlink:type="arc"/>

<link:label id="lab_us-gaap_UseOfEstimates_FC453D829B5BE3A054D78D6062731F12_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_FC453D829B5BE3A054D78D6062731F12" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Use of Estimates </link:label>

<link:label id="lab_us-gaap_UseOfEstimates_FC453D829B5BE3A054D78D6062731F12_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_FC453D829B5BE3A054D78D6062731F12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_FC453D829B5BE3A054D78D6062731F12" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Principles of Consolidation </link:label>

<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300" xlink:to="lab_us-gaap_ConsolidationPolicyTextBlock_35CD3754569298ECF4AA8D606273F300" xlink:type="arc"/>

<link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_EB0500833F7CBF32726C8D60627320D3_terseLabel_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_EB0500833F7CBF32726C8D60627320D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassifications </link:label>

<link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_EB0500833F7CBF32726C8D60627320D3_label_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_EB0500833F7CBF32726C8D60627320D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:label="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_EB0500833F7CBF32726C8D60627320D3" xlink:type="locator"/>

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<link:label id="lab_us-gaap_BusinessCombinationsPolicy_4A673B57E62B465EFCB18D6062731629_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_4A673B57E62B465EFCB18D6062731629" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Combinations </link:label>

<link:label id="lab_us-gaap_BusinessCombinationsPolicy_4A673B57E62B465EFCB18D6062731629_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_4A673B57E62B465EFCB18D6062731629" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combinations Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationsPolicy" xlink:label="loc_us-gaap_BusinessCombinationsPolicy_4A673B57E62B465EFCB18D6062731629" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_2F278552A58AE90AF0E98D60627358BB_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_2F278552A58AE90AF0E98D60627358BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_2F278552A58AE90AF0E98D60627358BB_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_2F278552A58AE90AF0E98D60627358BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_2F278552A58AE90AF0E98D60627358BB" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InvestmentPolicyTextBlock_7793C7975757D25241588D6062732645_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentPolicyTextBlock_7793C7975757D25241588D6062732645" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment Securities </link:label>

<link:label id="lab_us-gaap_InvestmentPolicyTextBlock_7793C7975757D25241588D6062732645_label_en-US" xlink:label="lab_us-gaap_InvestmentPolicyTextBlock_7793C7975757D25241588D6062732645" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investment, Policy [Policy Text Block] </link:label>

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<link:label id="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201_terseLabel_en-US" xlink:label="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Stock </link:label>

<link:label id="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201_label_en-US" xlink:label="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Stock Policy [Text Block] </link:label>

<link:label id="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201_documentation_en-US" xlink:label="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Restricted Stock Policy [Text Block] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_RestrictedStockPolicyTextBlock" xlink:label="loc_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201" xlink:to="lab_wal_RestrictedStockPolicyTextBlock_96F083BBED5EC7F3BDC28D606273C201" xlink:type="arc"/>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans, Interest and Fees from Loans </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Lease Financing, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy" xlink:label="loc_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6" xlink:to="lab_us-gaap_LoansAndLeasesReceivableLeaseFinancingPolicy_D1DB5AD1E5AB2E0B27748D60627331B6" xlink:type="arc"/>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Allowance for Credit Losses </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD" xlink:to="lab_us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy_ECAED66C0BEE271DFEE78D60627359BD" xlink:type="arc"/>

<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74_terseLabel_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Sales, Policy [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74_label_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Sales, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74" xlink:to="lab_us-gaap_TransfersAndServicingOfFinancialAssetsTransfersOfFinancialAssetsSalesPolicy_A341BD71075DB19D16058D606273AF74" xlink:type="arc"/>

<link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Policy [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_624339AC72428482DD588D6062731B2A" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Leases [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266_label_en-US" xlink:label="lab_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Leases [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeLeasesPolicyTextBlock" xlink:label="loc_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266" xlink:to="lab_us-gaap_LesseeLeasesPolicyTextBlock_498150D72EC023E7C0EA8D606273A266" xlink:type="arc"/>

<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets, Policy [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_4B9EDCC7664F69669A6E8D606273320E" xlink:type="arc"/>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Assets Acquired Through Foreclosure </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Real Estate Acquired Through Foreclosure [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy" xlink:label="loc_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E" xlink:to="lab_us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy_3D94CA33295EBF583F7C8D606273677E" xlink:type="arc"/>

<link:label id="lab_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation, Variable Interest Entity, Policy [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A_label_en-US" xlink:label="lab_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation, Variable Interest Entity, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConsolidationVariableInterestEntityPolicy" xlink:label="loc_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A" xlink:to="lab_us-gaap_ConsolidationVariableInterestEntityPolicy_040018F1AC0BB79D61EF8D606273623A" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Financial Instruments </link:label>

<link:label id="lab_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29_label_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivatives, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="loc_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29" xlink:to="lab_us-gaap_DerivativesPolicyTextBlock_3A048C30D3D50996C73A8D6062739E29" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Taxes </link:label>

<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C_label_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C" xlink:to="lab_us-gaap_IncomeTaxPolicyTextBlock_F5D7FBD2ACCC37AC89DC8D606273386C" xlink:type="arc"/>

<link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue [Policy Text Block] </link:label>

<link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_3522CE3F1289FBC2B6D38D606273E638" xlink:type="arc"/>

<link:label id="lab_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248_terseLabel_en-US" xlink:label="lab_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Off-Balance Sheet Instruments </link:label>

<link:label id="lab_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248_label_en-US" xlink:label="lab_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock" xlink:label="loc_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248" xlink:to="lab_us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock_B57CDEDD568B5CED86E68D6062730248" xlink:type="arc"/>

<link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Values of Financial Instruments </link:label>

<link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA_label_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value of Financial Instruments, Policy [Policy Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA" xlink:to="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_FF3EF3E5354F985E906A8D606273E4CA" xlink:type="arc"/>

<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_FF177F2B3C65B0DF4CFB8D6062731FF2_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_FF177F2B3C65B0DF4CFB8D6062731FF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recent Accounting Pronouncements </link:label>

<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_FF177F2B3C65B0DF4CFB8D6062731FF2_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_FF177F2B3C65B0DF4CFB8D6062731FF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>

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<link:label id="lab_wal_CertificatesofDepositCDARS_12074C46052962AF9E4682A18A4CC8FF_terseLabel_en-US" xlink:label="lab_wal_CertificatesofDepositCDARS_12074C46052962AF9E4682A18A4CC8FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Certificates of Deposit, CDARS </link:label>

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<link:label id="lab_us-gaap_TimeDepositMaturitiesYearFive_08A2595DEC3C70B2E0F282A18A4DB5FB_label_en-US" xlink:label="lab_us-gaap_TimeDepositMaturitiesYearFive_08A2595DEC3C70B2E0F282A18A4DB5FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Time Deposit Maturities, Year Five </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TimeDepositMaturitiesYearFive_08A2595DEC3C70B2E0F282A18A4DB5FB" xlink:to="lab_us-gaap_TimeDepositMaturitiesYearFive_08A2595DEC3C70B2E0F282A18A4DB5FB" xlink:type="arc"/>

<link:label id="lab_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E_totalLabel_en-US" xlink:label="lab_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Time Deposits </link:label>

<link:label id="lab_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E_label_en-US" xlink:label="lab_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Time Deposits </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TimeDeposits" xlink:label="loc_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E" xlink:to="lab_us-gaap_TimeDeposits_4A8B646439EC842F6D1E82A18A4D217E" xlink:type="arc"/>

<link:label id="lab_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B_terseLabel_en-US" xlink:label="lab_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest Bearing Deposit Demand </link:label>

<link:label id="lab_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B_label_en-US" xlink:label="lab_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest-bearing Domestic Deposit, Demand </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestBearingDomesticDepositDemand" xlink:label="loc_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B" xlink:to="lab_us-gaap_InterestBearingDomesticDepositDemand_E267491F1464637A862982A193E2778B" xlink:type="arc"/>

<link:label id="lab_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55_terseLabel_en-US" xlink:label="lab_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposits, Savings Deposits </link:label>

<link:label id="lab_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55_label_en-US" xlink:label="lab_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deposits, Savings Deposits </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepositsSavingsDeposits" xlink:label="loc_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55" xlink:to="lab_us-gaap_DepositsSavingsDeposits_620BA433B6E0492B494882A18A4EFF55" xlink:type="arc"/>

<link:label id="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634_terseLabel_en-US" xlink:label="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Time Deposits, $250,000 or more </link:label>

<link:label id="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634_label_en-US" xlink:label="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Time Deposits, $250,000 or more </link:label>

<link:label id="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634_documentation_en-US" xlink:label="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $250,000 or more. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_TimeDeposits250000ormore" xlink:label="loc_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634" xlink:to="lab_wal_TimeDeposits250000ormore_CBD13B4E0896C2BA35CB82A18A4ED634" xlink:type="arc"/>

<link:label id="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D_terseLabel_en-US" xlink:label="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Time Deposits, Less than $250,000 </link:label>

<link:label id="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D_label_en-US" xlink:label="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Time Deposits, Less than $250,000 </link:label>

<link:label id="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D_documentation_en-US" xlink:label="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) that total to less than $250,000. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_TimeDepositsLessthan250000" xlink:label="loc_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D" xlink:to="lab_wal_TimeDepositsLessthan250000_F664E3FC5C94A87C3EC282A18A4E4D3D" xlink:type="arc"/>

<link:label id="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D_terseLabel_en-US" xlink:label="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposits, ICS </link:label>

<link:label id="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D_label_en-US" xlink:label="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deposits, ICS </link:label>

<link:label id="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D_documentation_en-US" xlink:label="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Demand deposit accounts and/or money market deposit accounts that are FDIC insured due to participation in the Insured Cash Sweep service. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_DepositsICS" xlink:label="loc_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D" xlink:to="lab_wal_DepositsICS_8FB1A5C86FF1D5AB1E4D82A18A4E179D" xlink:type="arc"/>

<link:label id="lab_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271_terseLabel_en-US" xlink:label="lab_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposits, Wholesale </link:label>

<link:label id="lab_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271_label_en-US" xlink:label="lab_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deposits, Wholesale </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepositsWholesale" xlink:label="loc_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271" xlink:to="lab_us-gaap_DepositsWholesale_364736CDD6E7A7762B6F82A18A4F8271" xlink:type="arc"/>

<link:label id="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420_terseLabel_en-US" xlink:label="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposits costs, deposits with earnings credits </link:label>

<link:label id="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420_label_en-US" xlink:label="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deposits costs, deposits with earnings credits </link:label>

<link:label id="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420_documentation_en-US" xlink:label="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Deposits related costs on deposits with earnings credits. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Depositscostsdepositswithearningscredits" xlink:label="loc_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420" xlink:to="lab_wal_Depositscostsdepositswithearningscredits_8E1750ED4B1C3785A21982A18A4F1420" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, Average Recorded Investment </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, Average Recorded Investment </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment" xlink:label="loc_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C" xlink:to="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_C25A8E20D96417807718F2487EB2418C" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_D44595F1F19438774FA9F2487EB215C8_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_D44595F1F19438774FA9F2487EB215C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest income recognized on impaired loans </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod" xlink:label="loc_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_D44595F1F19438774FA9F2487EB215C8" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_D44595F1F19438774FA9F2487EB215C8" xlink:to="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod_D44595F1F19438774FA9F2487EB215C8" xlink:type="arc"/>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest recognized on nonaccrual loans, cash basis </link:label>

<link:label id="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3_label_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impaired Financing Receivable, Interest Income, Cash Basis Method </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod" xlink:label="loc_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3" xlink:to="lab_us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod_54470B263A6425239B63F2487EB3C8E3" xlink:type="arc"/>

<link:label id="lab_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Table] </link:label>

<link:label id="lab_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2" xlink:to="lab_us-gaap_LossContingenciesTable_5006D096FA56AAB29E32F2487C1602B2" xlink:type="arc"/>

<link:label id="lab_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>

<link:label id="lab_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0" xlink:to="lab_us-gaap_LossContingenciesLineItems_835EBDDAE4B39908DE4DF2487C1C7DF0" xlink:type="arc"/>

<link:label id="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_07B704D1B6AF54BBCDD2F2487C1D4141_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_07B704D1B6AF54BBCDD2F2487C1D4141" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total Amount Committed </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability" xlink:label="loc_us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability_07B704D1B6AF54BBCDD2F2487C1D4141" xlink:type="locator"/>

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<link:label id="lab_wal_SignificantOfAccountingPoliciesTable_BFC7B4E647D935989589F24878BFFCC2_terseLabel_en-US" xlink:label="lab_wal_SignificantOfAccountingPoliciesTable_BFC7B4E647D935989589F24878BFFCC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Significant Of Accounting Policies [Table] </link:label>

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<link:label id="lab_wal_SignificantOfAccountingPoliciesLineItems_444EA0D5F06EDA86850BF24878C096A5_terseLabel_en-US" xlink:label="lab_wal_SignificantOfAccountingPoliciesLineItems_444EA0D5F06EDA86850BF24878C096A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Significant Of Accounting Policies [Line Items] </link:label>

<link:label id="lab_wal_SignificantOfAccountingPoliciesLineItems_444EA0D5F06EDA86850BF24878C096A5_label_en-US" xlink:label="lab_wal_SignificantOfAccountingPoliciesLineItems_444EA0D5F06EDA86850BF24878C096A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Significant Of Accounting Policies [Line Items] </link:label>

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<link:label id="lab_us-gaap_LifeInsuranceCorporateOrBankOwnedAmount_9759E22B3E1B8895C96DF24878C17B0A_terseLabel_en-US" xlink:label="lab_us-gaap_LifeInsuranceCorporateOrBankOwnedAmount_9759E22B3E1B8895C96DF24878C17B0A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Life Insurance, Corporate or Bank Owned, Amount </link:label>

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<link:label id="lab_wal_NumberOfUnconsolidatedSubsidiaries_64BBAF92389019D1956EF24878C11A85_terseLabel_en-US" xlink:label="lab_wal_NumberOfUnconsolidatedSubsidiaries_64BBAF92389019D1956EF24878C11A85" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number Of Unconsolidated Subsidiaries </link:label>

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<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_F4D241EA33EDD27EA82BF24877126404_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_F4D241EA33EDD27EA82BF24877126404" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Loss [Line Items] </link:label>

<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_F4D241EA33EDD27EA82BF24877126404_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_F4D241EA33EDD27EA82BF24877126404" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Loss [Line Items] </link:label>

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<link:label id="lab_us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans_7A26DD4FD4EBACEBFDE3F2487712C92F_negatedLabel_en-US" xlink:label="lab_us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans_7A26DD4FD4EBACEBFDE3F2487712C92F" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Reversal of fair value adjustments upon disposition of loans </link:label>

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<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_6DBEF3ED080B496D0D4DF2487DD16D5C_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_6DBEF3ED080B496D0D4DF2487DD16D5C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gains and Losses from Fair Value Changes Included in Consolidated Statement of Operations </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_6DBEF3ED080B496D0D4DF2487DD16D5C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_5FEEFF7C512EE570C405F2487DD18FD1_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_5FEEFF7C512EE570C405F2487DD18FD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value of Assets and Liabilities </link:label>

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<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_E9F77E7E0CEBE42777B4F2487DD2071B_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_E9F77E7E0CEBE42777B4F2487DD2071B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in Level 3 Liabilities Measured at Fair Value on Recurring Basis </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_E9F77E7E0CEBE42777B4F2487DD2071B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_A077DCE007B1F15AC59FF2487DD2E472_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_A077DCE007B1F15AC59FF2487DD2E472" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assets Measured at Fair Value on Nonrecurring Basis </link:label>

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<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_298138C2CFBD1636C9F1F2487DD264EA_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_298138C2CFBD1636C9F1F2487DD264EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table Text Block] </link:label>

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<link:label id="lab_us-gaap_ConstructionLoansMember_09D727B7EF3373DBA4B6F2487A83F41E_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionLoansMember_09D727B7EF3373DBA4B6F2487A83F41E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Construction Loans [Member] </link:label>

<link:label id="lab_us-gaap_ConstructionLoansMember_09D727B7EF3373DBA4B6F2487A83F41E_label_en-US" xlink:label="lab_us-gaap_ConstructionLoansMember_09D727B7EF3373DBA4B6F2487A83F41E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Construction Loans [Member] </link:label>

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<link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_1244009DEB7330CAA7F3F2487A8417C7_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_1244009DEB7330CAA7F3F2487A8417C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance Receivable Transferred To Held For Sale [Line Items] </link:label>

<link:label id="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_1244009DEB7330CAA7F3F2487A8417C7_label_en-US" xlink:label="lab_us-gaap_AccountsNotesAndLoansReceivableLineItems_1244009DEB7330CAA7F3F2487A8417C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts, Notes, Loans and Financing Receivable [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_1244009DEB7330CAA7F3F2487A8417C7" xlink:type="locator"/>

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<link:label id="lab_wal_LoanCommitmentsOutstanding_74EC5F8BA3FA218F71A4F2487A84B075_terseLabel_en-US" xlink:label="lab_wal_LoanCommitmentsOutstanding_74EC5F8BA3FA218F71A4F2487A84B075" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loan commitments outstanding </link:label>

<link:label id="lab_wal_LoanCommitmentsOutstanding_74EC5F8BA3FA218F71A4F2487A84B075_label_en-US" xlink:label="lab_wal_LoanCommitmentsOutstanding_74EC5F8BA3FA218F71A4F2487A84B075" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loan Commitments Outstanding </link:label>

<link:label id="lab_wal_LoanCommitmentsOutstanding_74EC5F8BA3FA218F71A4F2487A84B075_documentation_en-US" xlink:label="lab_wal_LoanCommitmentsOutstanding_74EC5F8BA3FA218F71A4F2487A84B075" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Loan commitments outstanding on troubled debt restructured loans. </link:label>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans_8A0823C029BB2B887390F2487A84C4A4_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans_8A0823C029BB2B887390F2487A84C4A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans_8A0823C029BB2B887390F2487A84C4A4_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans_8A0823C029BB2B887390F2487A84C4A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans </link:label>

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<link:label id="lab_wal_LoansAndLoansReceivablePurchases_4D7B994BCBAF60664349F2487A85494A_terseLabel_en-US" xlink:label="lab_wal_LoansAndLoansReceivablePurchases_4D7B994BCBAF60664349F2487A85494A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans And Loans Receivable Purchases </link:label>

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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_2A16A585FDB07AC96A81829776ADED40_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_2A16A585FDB07AC96A81829776ADED40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months </link:label>

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<link:label id="lab_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability </link:label>

<link:label id="lab_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB" xlink:to="lab_us-gaap_OperatingLeaseLiability_2DCD6206FAACA637A008829776AD88EB" xlink:type="arc"/>

<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_7CBEC846CDC92568D17B829776ADE137_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_7CBEC846CDC92568D17B829776ADE137" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Discount Rate, Percent </link:label>

<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_7CBEC846CDC92568D17B829776ADE137_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_7CBEC846CDC92568D17B829776ADE137" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Discount Rate, Percent </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_7CBEC846CDC92568D17B829776ADE137" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Remaining Lease Term </link:label>

<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Remaining Lease Term </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_D34B3227C385C0B8BA3B829776AD6974" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Two </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Two </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_6E3C6F26E6020E0A7545829776AD557B" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Three </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Three </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A6C708ACA8F7D6900D3F829776AD0D41" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Four </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Four </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_0425202F790EA9ADE02F829776ADA77B" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Five </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Five </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_68954DC2D9A5E4FFA941829776ADA495" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due after Year Five </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due after Year Five </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_5E439CED71DAA3894B2A829776AD503D" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01F122CB49344D1AB119829776ADDA0C" xlink:type="arc"/>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Undiscounted Excess Amount </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Undiscounted Excess Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_55EA6BBEC49D3B68623C829776ADA3F1" xlink:type="arc"/>

<link:label id="lab_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lease, Cost </link:label>

<link:label id="lab_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF_label_en-US" xlink:label="lab_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lease, Cost </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseCost" xlink:label="loc_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF" xlink:to="lab_us-gaap_LeaseCost_E7A1FA602163A5FAD186829776ADBBEF" xlink:type="arc"/>

<link:label id="lab_us-gaap_VariableLeaseCost_37C305AED99D94EFC79982977FBE9037_terseLabel_en-US" xlink:label="lab_us-gaap_VariableLeaseCost_37C305AED99D94EFC79982977FBE9037" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, operating lease, other cost </link:label>

<link:label id="lab_us-gaap_VariableLeaseCost_37C305AED99D94EFC79982977FBE9037_label_en-US" xlink:label="lab_us-gaap_VariableLeaseCost_37C305AED99D94EFC79982977FBE9037" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Lease, Cost </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableLeaseCost" xlink:label="loc_us-gaap_VariableLeaseCost_37C305AED99D94EFC79982977FBE9037" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_87DA5322F70233312CC2829776AD5C03_terseLabel_en-US" xlink:label="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_87DA5322F70233312CC2829776AD5C03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Right-of-Use Asset Obtained in Exchange for Operating Lease Liability </link:label>

<link:label id="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_87DA5322F70233312CC2829776AD5C03_label_en-US" xlink:label="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_87DA5322F70233312CC2829776AD5C03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Right-of-Use Asset Obtained in Exchange for Operating Lease Liability </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_87DA5322F70233312CC2829776AD5C03" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LeaseAndRentalExpense_3BC16B5FDDC58CC89B87829776ADA142_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_3BC16B5FDDC58CC89B87829776ADA142" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Rent Expense </link:label>

<link:label id="lab_us-gaap_LeaseAndRentalExpense_3BC16B5FDDC58CC89B87829776ADA142_label_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_3BC16B5FDDC58CC89B87829776ADA142" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Rent Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="loc_us-gaap_LeaseAndRentalExpense_3BC16B5FDDC58CC89B87829776ADA142" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeStatementLocationAxis_31330E11B8AC2E8C914F883CF820A1CC_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis_31330E11B8AC2E8C914F883CF820A1CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Axis] </link:label>

<link:label id="lab_us-gaap_IncomeStatementLocationAxis_31330E11B8AC2E8C914F883CF820A1CC_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis_31330E11B8AC2E8C914F883CF820A1CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Axis] </link:label>

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<link:label id="lab_us-gaap_IncomeStatementLocationDomain_91E1BAD5EE36B0961D52883CF820EBD3_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain_91E1BAD5EE36B0961D52883CF820EBD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Domain] </link:label>

<link:label id="lab_us-gaap_IncomeStatementLocationDomain_91E1BAD5EE36B0961D52883CF820EBD3_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain_91E1BAD5EE36B0961D52883CF820EBD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Domain] </link:label>

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<link:label id="lab_wal_RealizedGainLossOnSaleOfInvestmentMember_75D689C56C2F57AAA23E883CF820EF91_terseLabel_en-US" xlink:label="lab_wal_RealizedGainLossOnSaleOfInvestmentMember_75D689C56C2F57AAA23E883CF820EF91" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Realized Gain Loss On Sale Of Investment [Member] </link:label>

<link:label id="lab_wal_RealizedGainLossOnSaleOfInvestmentMember_75D689C56C2F57AAA23E883CF820EF91_label_en-US" xlink:label="lab_wal_RealizedGainLossOnSaleOfInvestmentMember_75D689C56C2F57AAA23E883CF820EF91" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Realized Gain Loss On Sale Of Investment [Member] </link:label>

<link:label id="lab_wal_RealizedGainLossOnSaleOfInvestmentMember_75D689C56C2F57AAA23E883CF820EF91_documentation_en-US" xlink:label="lab_wal_RealizedGainLossOnSaleOfInvestmentMember_75D689C56C2F57AAA23E883CF820EF91" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Realized Gain Loss on Sale of Investment [Member] </link:label>

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<link:label id="lab_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A_terseLabel_en-US" xlink:label="lab_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Tax Expense [Member] </link:label>

<link:label id="lab_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A_label_en-US" xlink:label="lab_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Expense [Member] </link:label>

<link:label id="lab_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A_documentation_en-US" xlink:label="lab_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Income tax expense. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_IncomeTaxExpenseMember" xlink:label="loc_wal_IncomeTaxExpenseMember_FEADD8EC0088EAA837AF883CF8207C9A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_EEA4B7D4D59DB5AAE45B883CF82011D7_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_EEA4B7D4D59DB5AAE45B883CF82011D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Axis] </link:label>

<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_EEA4B7D4D59DB5AAE45B883CF82011D7_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_EEA4B7D4D59DB5AAE45B883CF82011D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Axis] </link:label>

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<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_D3172D6964F53D63B032883CF8207996_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_D3172D6964F53D63B032883CF8207996" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Domain] </link:label>

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<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_03B41F87E178D728FE5F883CF820ED14_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_03B41F87E178D728FE5F883CF820ED14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Member] </link:label>

<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_03B41F87E178D728FE5F883CF820ED14_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_03B41F87E178D728FE5F883CF820ED14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Member] </link:label>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_4BA40D06B23E26D44A70883CF820A083_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_4BA40D06B23E26D44A70883CF820A083" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Realized gains on sales of investment securities </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_4BA40D06B23E26D44A70883CF820A083_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_4BA40D06B23E26D44A70883CF820A083" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_4BA40D06B23E26D44A70883CF820A083" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5B6B594D1EC95E431BF5883CF820B3D0_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5B6B594D1EC95E431BF5883CF820B3D0" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Amount reclassified from accumulated other comprehensive income </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5B6B594D1EC95E431BF5883CF820B3D0_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5B6B594D1EC95E431BF5883CF820B3D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5B6B594D1EC95E431BF5883CF820B3D0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_7F79FC086FF717CB491F883CF820BE6E_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_7F79FC086FF717CB491F883CF820BE6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amount reclassified from accumulated other comprehensive income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_7F79FC086FF717CB491F883CF820BE6E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_BuildingsAndImprovementsGross_36B26BD78FAD01EBAAB4828E00D464FE_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_36B26BD78FAD01EBAAB4828E00D464FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Buildings and Improvements, Gross </link:label>

<link:label id="lab_us-gaap_BuildingsAndImprovementsGross_36B26BD78FAD01EBAAB4828E00D464FE_label_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_36B26BD78FAD01EBAAB4828E00D464FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Buildings and Improvements, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_36B26BD78FAD01EBAAB4828E00D464FE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_EC87EE21186A17CA5E9A828E00D4E545_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_EC87EE21186A17CA5E9A828E00D4E545" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due, Next Twelve Months </link:label>

<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_EC87EE21186A17CA5E9A828E00D4E545_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_EC87EE21186A17CA5E9A828E00D4E545" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due, Next Twelve Months </link:label>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_264A41227B47565802B3828E00D453C7_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_264A41227B47565802B3828E00D453C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Two Years </link:label>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_EEF31B53FB5F4EEFEED8828E00D5A8EC_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_EEF31B53FB5F4EEFEED8828E00D5A8EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Three Years </link:label>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_694CA49B9ABF298E583F828E00D5F47A_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_694CA49B9ABF298E583F828E00D5F47A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Four Years </link:label>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_9A7A085C99EF4ECC019E828E00D65666_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_9A7A085C99EF4ECC019E828E00D65666" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Five Years </link:label>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_54E714F482DC13951A99828E00D61165_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_54E714F482DC13951A99828E00D61165" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due Thereafter </link:label>

<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_54E714F482DC13951A99828E00D61165_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_54E714F482DC13951A99828E00D61165" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due Thereafter </link:label>

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<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_04429EAEF640C364EB11828E00D64038_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_04429EAEF640C364EB11828E00D64038" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due </link:label>

<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_04429EAEF640C364EB11828E00D64038_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_04429EAEF640C364EB11828E00D64038" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due </link:label>

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<link:label id="lab_us-gaap_LandAndLandImprovements_ACCEAF81BCED6C433622828E00D6521B_terseLabel_en-US" xlink:label="lab_us-gaap_LandAndLandImprovements_ACCEAF81BCED6C433622828E00D6521B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Land and Land Improvements </link:label>

<link:label id="lab_us-gaap_LandAndLandImprovements_ACCEAF81BCED6C433622828E00D6521B_label_en-US" xlink:label="lab_us-gaap_LandAndLandImprovements_ACCEAF81BCED6C433622828E00D6521B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Land and Land Improvements </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandAndLandImprovements" xlink:label="loc_us-gaap_LandAndLandImprovements_ACCEAF81BCED6C433622828E00D6521B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FurnitureAndFixturesGross_CC66F9750FF03D2EC9C6828E05BFC0C5_terseLabel_en-US" xlink:label="lab_us-gaap_FurnitureAndFixturesGross_CC66F9750FF03D2EC9C6828E05BFC0C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Furniture Fixtures And Equipment Gross </link:label>

<link:label id="lab_us-gaap_FurnitureAndFixturesGross_CC66F9750FF03D2EC9C6828E05BFC0C5_label_en-US" xlink:label="lab_us-gaap_FurnitureAndFixturesGross_CC66F9750FF03D2EC9C6828E05BFC0C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Furniture and Fixtures, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FurnitureAndFixturesGross" xlink:label="loc_us-gaap_FurnitureAndFixturesGross_CC66F9750FF03D2EC9C6828E05BFC0C5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LeaseholdImprovementsGross_2CAD355B2E49C46123F6828E00D7674E_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsGross_2CAD355B2E49C46123F6828E00D7674E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Leasehold Improvements, Gross </link:label>

<link:label id="lab_us-gaap_LeaseholdImprovementsGross_2CAD355B2E49C46123F6828E00D7674E_label_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsGross_2CAD355B2E49C46123F6828E00D7674E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Leasehold Improvements, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseholdImprovementsGross" xlink:label="loc_us-gaap_LeaseholdImprovementsGross_2CAD355B2E49C46123F6828E00D7674E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ConstructionInProgressGross_DB06353192D5E113399A828E00D71F98_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionInProgressGross_DB06353192D5E113399A828E00D71F98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Construction in Progress, Gross </link:label>

<link:label id="lab_us-gaap_ConstructionInProgressGross_DB06353192D5E113399A828E00D71F98_label_en-US" xlink:label="lab_us-gaap_ConstructionInProgressGross_DB06353192D5E113399A828E00D71F98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Construction in Progress, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionInProgressGross" xlink:label="loc_us-gaap_ConstructionInProgressGross_DB06353192D5E113399A828E00D71F98" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_4BC28944644AD955EA75828E00D7F2D2_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_4BC28944644AD955EA75828E00D7F2D2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Gross </link:label>

<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_4BC28944644AD955EA75828E00D7F2D2_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_4BC28944644AD955EA75828E00D7F2D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_4BC28944644AD955EA75828E00D7F2D2" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48A94D1C1ECAF9728BDC828E00D7EA4D_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48A94D1C1ECAF9728BDC828E00D7EA4D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48A94D1C1ECAF9728BDC828E00D7EA4D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_936322420F68CB084C06828E00D83663_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_936322420F68CB084C06828E00D83663" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Premises and equipment, net </link:label>

<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_936322420F68CB084C06828E00D83663_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_936322420F68CB084C06828E00D83663" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_936322420F68CB084C06828E00D83663" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DepreciationNonproduction_7129A761018756B0EE2A828E00D871D2_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationNonproduction_7129A761018756B0EE2A828E00D871D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation, Nonproduction </link:label>

<link:label id="lab_us-gaap_DepreciationNonproduction_7129A761018756B0EE2A828E00D871D2_label_en-US" xlink:label="lab_us-gaap_DepreciationNonproduction_7129A761018756B0EE2A828E00D871D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation, Nonproduction </link:label>

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<link:label id="lab_us-gaap_DebtDisclosureTextBlock_B8DA9200B26964691224F2487A0DAF04_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_B8DA9200B26964691224F2487A0DAF04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Borrowings </link:label>

<link:label id="lab_us-gaap_DebtDisclosureTextBlock_B8DA9200B26964691224F2487A0DAF04_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_B8DA9200B26964691224F2487A0DAF04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_B8DA9200B26964691224F2487A0DAF04" xlink:type="locator"/>

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<link:label id="lab_wal_JuniorSubordinatedDebtAbstract_7842DC8727865ACCE5518838BC55D569_label_en-US" xlink:label="lab_wal_JuniorSubordinatedDebtAbstract_7842DC8727865ACCE5518838BC55D569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Junior Subordinated Debt [Abstract] </link:label>

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<link:label id="lab_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96_terseLabel_en-US" xlink:label="lab_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> BankWest Nevada Capital Trust II [Member] </link:label>

<link:label id="lab_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96_label_en-US" xlink:label="lab_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> BankWest Nevada Capital Trust II [Member] </link:label>

<link:label id="lab_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96_documentation_en-US" xlink:label="lab_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> BankWest Nevada Capital Trust II [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_BankWestNevadaCapitalTrustIIMember" xlink:label="loc_wal_BankWestNevadaCapitalTrustIIMember_7BD0A0935887ABBF5C6E8838BC64CA96" xlink:type="locator"/>

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<link:label id="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED_terseLabel_en-US" xlink:label="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intermountain First Statutory Trust I [Member] </link:label>

<link:label id="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED_label_en-US" xlink:label="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intermountain First Statutory Trust I [Member] </link:label>

<link:label id="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED_documentation_en-US" xlink:label="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intermountain First Statutory Trust I [Member] [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_IntermountainFirstStatutoryTrustIMember" xlink:label="loc_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED" xlink:to="lab_wal_IntermountainFirstStatutoryTrustIMember_25CB2B104418C5DECC918838BC640AED" xlink:type="arc"/>

<link:label id="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1_terseLabel_en-US" xlink:label="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> First Independent Capital Trust I [Member] </link:label>

<link:label id="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1_label_en-US" xlink:label="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> First Independent Capital Trust I [Member] </link:label>

<link:label id="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1_documentation_en-US" xlink:label="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> First Independent Capital Trust I [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_FirstIndependentCapitalTrustIMember" xlink:label="loc_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1" xlink:to="lab_wal_FirstIndependentCapitalTrustIMember_36915CB22B981281B37B8838BC64CDE1" xlink:type="arc"/>

<link:label id="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED_terseLabel_en-US" xlink:label="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> WAL Trust No. 1 [Member] </link:label>

<link:label id="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED_label_en-US" xlink:label="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> WAL Trust No. 1 [Member] </link:label>

<link:label id="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED_documentation_en-US" xlink:label="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> WAL Trust No. 1 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_WALTrustNo.1Member" xlink:label="loc_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED" xlink:to="lab_wal_WALTrustNo.1Member_5A0139E6269F851EC2F18838BC64F8ED" xlink:type="arc"/>

<link:label id="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088_terseLabel_en-US" xlink:label="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> WAL Statutory Trust No. 2 [Member] </link:label>

<link:label id="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088_label_en-US" xlink:label="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> WAL Statutory Trust No. 2 [Member] </link:label>

<link:label id="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088_documentation_en-US" xlink:label="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> WAL Statutory Trust No. 2 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_WALStatutoryTrustNo.2Member" xlink:label="loc_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088" xlink:to="lab_wal_WALStatutoryTrustNo.2Member_75E926165349991A064C8838BC644088" xlink:type="arc"/>

<link:label id="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61_terseLabel_en-US" xlink:label="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> WAL Statutory Trust No. 3 [Member] </link:label>

<link:label id="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61_label_en-US" xlink:label="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> WAL Statutory Trust No. 3 [Member] </link:label>

<link:label id="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61_documentation_en-US" xlink:label="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> WAL Statutory Trust No. 3 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_WALStatutoryTrustNo.3Member" xlink:label="loc_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61" xlink:to="lab_wal_WALStatutoryTrustNo.3Member_437722EC73E635CA70478838BC64AC61" xlink:type="arc"/>

<link:label id="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5_terseLabel_en-US" xlink:label="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Bridge Capital Trust I [Member] </link:label>

<link:label id="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5_label_en-US" xlink:label="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Bridge Capital Trust I [Member] </link:label>

<link:label id="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5_documentation_en-US" xlink:label="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Bridge Capital Trust I [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_BridgeCapitalTrustIMember" xlink:label="loc_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5" xlink:to="lab_wal_BridgeCapitalTrustIMember_A12AD5E1F687C9C481228838BC64EAE5" xlink:type="arc"/>

<link:label id="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E_terseLabel_en-US" xlink:label="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Bridge Capital Trust II [Member] </link:label>

<link:label id="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E_label_en-US" xlink:label="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Bridge Capital Trust II [Member] </link:label>

<link:label id="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E_documentation_en-US" xlink:label="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"/>

<link:loc xlink:href="wal-20191231.xsd#wal_BridgeCapitalTrustIIMember" xlink:label="loc_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E" xlink:to="lab_wal_BridgeCapitalTrustIIMember_FC6988467967904253278838BC647E1E" xlink:type="arc"/>

<link:label id="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A_terseLabel_en-US" xlink:label="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of Statutory Business Trusts Formed or Acquired </link:label>

<link:label id="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A_label_en-US" xlink:label="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Number of Statutory Business Trusts Formed or Acquired </link:label>

<link:label id="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A_documentation_en-US" xlink:label="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Number of Statutory Business Trusts Formed or Acquired </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NumberofStatutoryBusinessTrustsFormedorAcquired" xlink:label="loc_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A" xlink:to="lab_wal_NumberofStatutoryBusinessTrustsFormedorAcquired_662221A366174CBBA5CE8838BC64246A" xlink:type="arc"/>

<link:label id="lab_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD_terseLabel_en-US" xlink:label="lab_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust </link:label>

<link:label id="lab_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD_label_en-US" xlink:label="lab_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust" xlink:label="loc_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD" xlink:to="lab_us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_0112FF5B5ED40E99EA8D8838BC6454BD" xlink:type="arc"/>

<link:label id="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803_terseLabel_en-US" xlink:label="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unrealized gain or loss on junior subordinated debt [Line Items] </link:label>

<link:label id="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803_label_en-US" xlink:label="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unrealized gain or loss on junior subordinated debt carried at fair value </link:label>

<link:label id="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803_documentation_en-US" xlink:label="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Cumulative unrealized gain or loss on junior subordinated debt resulting from fair market value adjustments at each reporting period under the fair value option election. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue" xlink:label="loc_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803" xlink:to="lab_wal_Unrealizedgainorlossonjuniorsubordinateddebtcarriedatfairvalue_126DCF8E9B7205CE02BB8838BC644803" xlink:type="arc"/>

<link:label id="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0_terseLabel_en-US" xlink:label="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Combination, Fair Market Value Adjustment on Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust </link:label>

<link:label id="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0_label_en-US" xlink:label="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Fair Market Value Adjustment on Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust </link:label>

<link:label id="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0_documentation_en-US" xlink:label="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Fair Market Value Adjustment on Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust" xlink:label="loc_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0" xlink:to="lab_wal_BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust_570413928A0D341900FA8838BC64E3E0" xlink:type="arc"/>

<link:label id="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C_terseLabel_en-US" xlink:label="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Junior Subordinated Debt </link:label>

<link:label id="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C_label_en-US" xlink:label="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Junior Subordinated Debt </link:label>

<link:label id="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C_documentation_en-US" xlink:label="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Fair value of junior subordinated debt assumed at the acquisition date. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt" xlink:label="loc_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C" xlink:to="lab_wal_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedJuniorSubordinatedDebt_DCDDA76AEF89A4F20B418838BC641B5C" xlink:type="arc"/>

<link:label id="lab_us-gaap_LongtermDebtWeightedAverageInterestRate_DF020312826055A0674D8838BC64B4DD_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtWeightedAverageInterestRate_DF020312826055A0674D8838BC64B4DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Weighted Average Interest Rate, at Point in Time </link:label>

<link:label id="lab_us-gaap_LongtermDebtWeightedAverageInterestRate_DF020312826055A0674D8838BC64B4DD_label_en-US" xlink:label="lab_us-gaap_LongtermDebtWeightedAverageInterestRate_DF020312826055A0674D8838BC64B4DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Weighted Average Interest Rate, at Point in Time </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_LongtermDebtWeightedAverageInterestRate_DF020312826055A0674D8838BC64B4DD" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_AA95FB854EA21F654D6BF2487953D06A_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_AA95FB854EA21F654D6BF2487953D06A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Earnings Per Share, Basic and Diluted </link:label>

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<link:label id="lab_us-gaap_HeldToMaturitySecuritiesFairValue_FC53730DDB8E14198D9CF2487BA4BF6E_totalLabel_en-US" xlink:label="lab_us-gaap_HeldToMaturitySecuritiesFairValue_FC53730DDB8E14198D9CF2487BA4BF6E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Debt Securities, Held-to-maturity, Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_FC53730DDB8E14198D9CF2487BA4BF6E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_661CD3C85A0984B449FCF2487BA59F4D_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_661CD3C85A0984B449FCF2487BA59F4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, Due in one year or less, Amortized Cost </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_661CD3C85A0984B449FCF2487BA59F4D_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_661CD3C85A0984B449FCF2487BA59F4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_5C44BC7839C8F034A560F2487BA59E1E_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_5C44BC7839C8F034A560F2487BA59E1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, After one year through five years, Amortized Cost </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_5C44BC7839C8F034A560F2487BA59E1E_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_5C44BC7839C8F034A560F2487BA59E1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_88D836F42A16B84FB776F2487BA56B87_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_88D836F42A16B84FB776F2487BA56B87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, After ten years, Amortized Cost </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_88D836F42A16B84FB776F2487BA56B87_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_88D836F42A16B84FB776F2487BA56B87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_7BBF28C493098274DD80F2487BA5F347_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_7BBF28C493098274DD80F2487BA5F347" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_3A36A33C5AD9B7D4F812F2487BA67EF8_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_3A36A33C5AD9B7D4F812F2487BA67EF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, Due in one year or less, Estimated Fair Value </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_3A36A33C5AD9B7D4F812F2487BA67EF8_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_3A36A33C5AD9B7D4F812F2487BA67EF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_5F7CE1ADC6D4F8727E37F2487BA60517_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_5F7CE1ADC6D4F8727E37F2487BA60517" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, After one year through five years, Estimated Fair Value </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_5F7CE1ADC6D4F8727E37F2487BA60517_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_5F7CE1ADC6D4F8727E37F2487BA60517" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_29D6864709D2D7802B99F2487BA6D928_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_29D6864709D2D7802B99F2487BA6D928" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, After five years through ten years, Estimated Fair Value </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_29D6864709D2D7802B99F2487BA6D928_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_29D6864709D2D7802B99F2487BA6D928" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_29D6864709D2D7802B99F2487BA6D928" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_7F82EAED16C2141C6175F2487BA6552F_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_7F82EAED16C2141C6175F2487BA6552F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, After ten years, Estimated Fair Value </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_7F82EAED16C2141C6175F2487BA6552F_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_7F82EAED16C2141C6175F2487BA6552F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_7F82EAED16C2141C6175F2487BA6552F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_8637684ABD0B7455FBF4F2487BA7ED2C_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_8637684ABD0B7455FBF4F2487BA7ED2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Securities available for sale, Mortgage backed securities, Estimated Fair Value </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_8637684ABD0B7455FBF4F2487BA7ED2C_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_8637684ABD0B7455FBF4F2487BA7ED2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_8637684ABD0B7455FBF4F2487BA7ED2C" xlink:type="locator"/>

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<link:label id="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_715DF1B10196F4BE0781F24879D420F0_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_715DF1B10196F4BE0781F24879D420F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Balance Sheet [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfCondensedBalanceSheetTableTextBlock" xlink:label="loc_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_715DF1B10196F4BE0781F24879D420F0" xlink:type="locator"/>

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<link:label id="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B_terseLabel_en-US" xlink:label="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule Of Condensed Income Statement And Comprehensive Income Table [Text Block] </link:label>

<link:label id="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B_label_en-US" xlink:label="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule Of Condensed Income Statement And Comprehensive Income Table [Text Block] </link:label>

<link:label id="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B_documentation_en-US" xlink:label="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Schedule of Condensed Income Statement and Comprehensive Income [Table Text Block] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock" xlink:label="loc_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B" xlink:to="lab_wal_ScheduleOfCondensedIncomeStatementAndComprehensiveIncomeTableTextBlock_D3A1932771C0EA958EC8F24879D42E5B" xlink:type="arc"/>

<link:label id="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_4709D94EAF570DBD3103F24879D501C9_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_4709D94EAF570DBD3103F24879D501C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Cash Flow Statement [Table Text Block] </link:label>

<link:label id="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_4709D94EAF570DBD3103F24879D501C9_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_4709D94EAF570DBD3103F24879D501C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Cash Flow Statement [Table Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfCondensedCashFlowStatementTableTextBlock" xlink:label="loc_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_4709D94EAF570DBD3103F24879D501C9" xlink:type="locator"/>

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<link:label id="lab_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_4C20239A17331B27585D1BF2B796C85E_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_4C20239A17331B27585D1BF2B796C85E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unrecognized Tax Benefits, Interest on Income Taxes Accrued </link:label>

<link:label id="lab_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_4C20239A17331B27585D1BF2B796C85E_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_4C20239A17331B27585D1BF2B796C85E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unrecognized Tax Benefits, Interest on Income Taxes Accrued </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued_4C20239A17331B27585D1BF2B796C85E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_2BA561C4A4BA99379A851BF2B797CBFC_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_2BA561C4A4BA99379A851BF2B797CBFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount </link:label>

<link:label id="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_2BA561C4A4BA99379A851BF2B797CBFC_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_2BA561C4A4BA99379A851BF2B797CBFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_2BA561C4A4BA99379A851BF2B797CBFC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_FD89DB15759584C8834A1BF2B7973916_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_FD89DB15759584C8834A1BF2B7973916" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount </link:label>

<link:label id="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_FD89DB15759584C8834A1BF2B7973916_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_FD89DB15759584C8834A1BF2B7973916" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_FD89DB15759584C8834A1BF2B7973916" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_40ED9CAAC8A0C5E5B3E61BF2B7971105_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_40ED9CAAC8A0C5E5B3E61BF2B7971105" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount </link:label>

<link:label id="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_40ED9CAAC8A0C5E5B3E61BF2B7971105_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_40ED9CAAC8A0C5E5B3E61BF2B7971105" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_40ED9CAAC8A0C5E5B3E61BF2B7971105" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_F9E64C2C78128749D4B71BF2B7976554_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_F9E64C2C78128749D4B71BF2B7976554" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount </link:label>

<link:label id="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_F9E64C2C78128749D4B71BF2B7976554_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_F9E64C2C78128749D4B71BF2B7976554" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount </link:label>

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<link:label id="lab_wal_IncomeTaxReconciliationLowIncomeHousingAndOtherTaxCredits_1F1AFCD5101BE921EA9F1BF2B798E71A_label_en-US" xlink:label="lab_wal_IncomeTaxReconciliationLowIncomeHousingAndOtherTaxCredits_1F1AFCD5101BE921EA9F1BF2B798E71A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Reconciliation Low Income Housing And Other Tax Credits </link:label>

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<link:label id="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_8B0C42117342C2A943B8F24877883CD4_terseLabel_en-US" xlink:label="lab_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_8B0C42117342C2A943B8F24877883CD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans, Leases and Allowance for Credit Losses </link:label>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2E850EE57F9EFB4EA86C35809A219538_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_2E850EE57F9EFB4EA86C35809A219538" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Table Text Block] </link:label>

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<link:label id="lab_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_A3119FCE081D3386281D35809A220E8D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_A3119FCE081D3386281D35809A220E8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] </link:label>

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<link:label id="lab_us-gaap_AssetsAbstract_709270178C8A08AFE1DF7EE6802CE35F_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_709270178C8A08AFE1DF7EE6802CE35F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assets: </link:label>

<link:label id="lab_us-gaap_AssetsAbstract_709270178C8A08AFE1DF7EE6802CE35F_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_709270178C8A08AFE1DF7EE6802CE35F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets [Abstract] </link:label>

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<link:label id="lab_us-gaap_CashAndDueFromBanks_9AD6AFAE000D27BE66107EE6803C724E_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndDueFromBanks_9AD6AFAE000D27BE66107EE6803C724E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and due from banks </link:label>

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<link:label id="lab_us-gaap_InterestBearingDepositsInBanks_68E516CEF6BEAAB2F81F7EE6803CADBC_terseLabel_en-US" xlink:label="lab_us-gaap_InterestBearingDepositsInBanks_68E516CEF6BEAAB2F81F7EE6803CADBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest-bearing deposits in other financial institutions </link:label>

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<link:label id="lab_us-gaap_CashCashEquivalentsAndFederalFundsSold_7764CCD338EE56918B9F7EE6803C95C5_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsAndFederalFundsSold_7764CCD338EE56918B9F7EE6803C95C5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Cash, cash equivalents, and restricted cash </link:label>

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<link:label id="lab_us-gaap_MoneyMarketFundsAtCarryingValue_0AD867516C60B31B30897EE6803C6426_terseLabel_en-US" xlink:label="lab_us-gaap_MoneyMarketFundsAtCarryingValue_0AD867516C60B31B30897EE6803C6426" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Money market investments </link:label>

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<link:label id="lab_us-gaap_RestrictedInvestments_64C85710F02DF8C949957EE6803CA067_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedInvestments_64C85710F02DF8C949957EE6803CA067" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investments in restricted stock, at cost </link:label>

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<link:label id="lab_us-gaap_LoansReceivableHeldForSaleAmount_76CE91FD8C21C9043F3C7EE6803CCBAE_terseLabel_en-US" xlink:label="lab_us-gaap_LoansReceivableHeldForSaleAmount_76CE91FD8C21C9043F3C7EE6803CCBAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans - HFS </link:label>

<link:label id="lab_us-gaap_LoansReceivableHeldForSaleAmount_76CE91FD8C21C9043F3C7EE6803CCBAE_label_en-US" xlink:label="lab_us-gaap_LoansReceivableHeldForSaleAmount_76CE91FD8C21C9043F3C7EE6803CCBAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans Receivable Held-for-sale, Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansReceivableHeldForSaleAmount" xlink:label="loc_us-gaap_LoansReceivableHeldForSaleAmount_76CE91FD8C21C9043F3C7EE6803CCBAE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmountAbstract_9A624521A895547AB20B7EE6803C7216_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmountAbstract_9A624521A895547AB20B7EE6803C7216" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans: </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmountAbstract_9A624521A895547AB20B7EE6803C7216_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmountAbstract_9A624521A895547AB20B7EE6803C7216" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Net Amount [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmountAbstract" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmountAbstract_9A624521A895547AB20B7EE6803C7216" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_0E3607C1DDD9A9BB01277EE6803C6E97_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_0E3607C1DDD9A9BB01277EE6803C6E97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans, net of deferred loan fees and costs </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_0E3607C1DDD9A9BB01277EE6803C6E97" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableAllowance_B9DEAE4992E357342B6B7EE6803C9D55_negatedLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableAllowance_B9DEAE4992E357342B6B7EE6803C9D55" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Less: Allowance for credit losses </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_B9DEAE4992E357342B6B7EE6803C9D55" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_2B4ABFF4408B27A64F887EE6803CAC38_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_2B4ABFF4408B27A64F887EE6803CAC38" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Premises and equipment, net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_2B4ABFF4408B27A64F887EE6803CAC38" xlink:type="locator"/>

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<link:label id="lab_us-gaap_BankOwnedLifeInsurance_4A5A9DD1A43C74F1896A7EE6803C5296_terseLabel_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsurance_4A5A9DD1A43C74F1896A7EE6803C5296" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Bank owned life insurance </link:label>

<link:label id="lab_us-gaap_BankOwnedLifeInsurance_4A5A9DD1A43C74F1896A7EE6803C5296_label_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsurance_4A5A9DD1A43C74F1896A7EE6803C5296" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Bank Owned Life Insurance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BankOwnedLifeInsurance" xlink:label="loc_us-gaap_BankOwnedLifeInsurance_4A5A9DD1A43C74F1896A7EE6803C5296" xlink:type="locator"/>

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<link:label id="lab_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>

<link:label id="lab_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9_label_en-US" xlink:label="lab_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9" xlink:to="lab_us-gaap_Goodwill_AFE2AF3552B33ADC6C937EE6803C68B9" xlink:type="arc"/>

<link:label id="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments_25C3D975EE9A507BFAE87EE6803C427E_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments_25C3D975EE9A507BFAE87EE6803C427E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investments in LIHTC and renewable energy </link:label>

<link:label id="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments_25C3D975EE9A507BFAE87EE6803C427E_label_en-US" xlink:label="lab_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments_25C3D975EE9A507BFAE87EE6803C427E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization Method Qualified Affordable Housing Project Investments </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments" xlink:label="loc_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments_25C3D975EE9A507BFAE87EE6803C427E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets </link:label>

<link:label id="lab_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE_label_en-US" xlink:label="lab_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE" xlink:to="lab_us-gaap_OtherAssets_8DC69F27B14ABF5325C67EE6803CBFFE" xlink:type="arc"/>

<link:label id="lab_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>

<link:label id="lab_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F_label_en-US" xlink:label="lab_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F" xlink:to="lab_us-gaap_Assets_1998C40DB169F49AA1EB7EE6803CDF9F" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities: </link:label>

<link:label id="lab_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="loc_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A" xlink:to="lab_us-gaap_LiabilitiesAbstract_0E595D04E4FB229C0D0C7EE6803CBA1A" xlink:type="arc"/>

<link:label id="lab_us-gaap_DepositsAbstract_3C2337D4E6E5E1C275DD7EE6803CDBF3_terseLabel_en-US" xlink:label="lab_us-gaap_DepositsAbstract_3C2337D4E6E5E1C275DD7EE6803CDBF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deposits: </link:label>

<link:label id="lab_us-gaap_DepositsAbstract_3C2337D4E6E5E1C275DD7EE6803CDBF3_label_en-US" xlink:label="lab_us-gaap_DepositsAbstract_3C2337D4E6E5E1C275DD7EE6803CDBF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deposits [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepositsAbstract" xlink:label="loc_us-gaap_DepositsAbstract_3C2337D4E6E5E1C275DD7EE6803CDBF3" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestBearingDepositLiabilities_28F1CB4CC5E7B0A3ECAB7EE6803C260E_terseLabel_en-US" xlink:label="lab_us-gaap_InterestBearingDepositLiabilities_28F1CB4CC5E7B0A3ECAB7EE6803C260E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest-bearing </link:label>

<link:label id="lab_us-gaap_InterestBearingDepositLiabilities_28F1CB4CC5E7B0A3ECAB7EE6803C260E_label_en-US" xlink:label="lab_us-gaap_InterestBearingDepositLiabilities_28F1CB4CC5E7B0A3ECAB7EE6803C260E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest-bearing Deposit Liabilities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestBearingDepositLiabilities" xlink:label="loc_us-gaap_InterestBearingDepositLiabilities_28F1CB4CC5E7B0A3ECAB7EE6803C260E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherBorrowings_ED82FAE584111F75380E7EE6803CB296_terseLabel_en-US" xlink:label="lab_us-gaap_OtherBorrowings_ED82FAE584111F75380E7EE6803CB296" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other borrowings </link:label>

<link:label id="lab_us-gaap_OtherBorrowings_ED82FAE584111F75380E7EE6803CB296_label_en-US" xlink:label="lab_us-gaap_OtherBorrowings_ED82FAE584111F75380E7EE6803CB296" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Borrowings </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherBorrowings" xlink:label="loc_us-gaap_OtherBorrowings_ED82FAE584111F75380E7EE6803CB296" xlink:type="locator"/>

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<link:label id="lab_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D_verboseLabel_en-US" xlink:label="lab_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Qualifying debt </link:label>

<link:label id="lab_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D_label_en-US" xlink:label="lab_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Qualifying Debt </link:label>

<link:label id="lab_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D_documentation_en-US" xlink:label="lab_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Including the current and noncurrent portions, carrying value as of the balance sheet date of junior subordinated debt owed to unconsolidated subsidiary trusts and subordinated debt. Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_QualifyingDebt" xlink:label="loc_wal_QualifyingDebt_58B636EA844E7256554F7EE6803CB34D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherLiabilities_3CF9795AF6D72486717F7EE6803C98E2_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilities_3CF9795AF6D72486717F7EE6803C98E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other liabilities </link:label>

<link:label id="lab_us-gaap_OtherLiabilities_3CF9795AF6D72486717F7EE6803C98E2_label_en-US" xlink:label="lab_us-gaap_OtherLiabilities_3CF9795AF6D72486717F7EE6803C98E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Liabilities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilities" xlink:label="loc_us-gaap_OtherLiabilities_3CF9795AF6D72486717F7EE6803C98E2" xlink:type="locator"/>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesReceivableNet" xlink:label="loc_us-gaap_NotesReceivableNet_989796FE1EFA1CC92773FD39276EF800" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_B7ABB6940CE4D2CBD4B4FD39276E8569_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_B7ABB6940CE4D2CBD4B4FD39276E8569" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current </link:label>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_B7ABB6940CE4D2CBD4B4FD39276E8569_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentCurrent_B7ABB6940CE4D2CBD4B4FD39276E8569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Not Past Due </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentCurrent_B7ABB6940CE4D2CBD4B4FD39276E8569" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_9934F96B14EB92CBB929FD39276EB637_terseLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_9934F96B14EB92CBB929FD39276EB637" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total Past Due </link:label>

<link:label id="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_9934F96B14EB92CBB929FD39276EB637_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableRecordedInvestmentPastDue_9934F96B14EB92CBB929FD39276EB637" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Past Due </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue_9934F96B14EB92CBB929FD39276EB637" xlink:type="locator"/>

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<link:label id="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168_terseLabel_en-US" xlink:label="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate Non Owner Occupied Multi Family [Member] </link:label>

<link:label id="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168_label_en-US" xlink:label="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Real Estate Non Owner Occupied Multi Family [Member] </link:label>

<link:label id="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168_documentation_en-US" xlink:label="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Commercial real estate non owner occupied multi family. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember" xlink:label="loc_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168" xlink:to="lab_wal_CommercialRealEstateNonOwnerOccupiedMultiFamilyMember_E0BF6B104B911FC4716A83F703CE3168" xlink:type="arc"/>

<link:label id="lab_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629_terseLabel_en-US" xlink:label="lab_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest Rate Marks on Acquired Loans </link:label>

<link:label id="lab_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629_label_en-US" xlink:label="lab_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Rate Marks on Acquired Loans </link:label>

<link:label id="lab_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629_documentation_en-US" xlink:label="lab_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Interest rate marks on acquired loans. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_InterestRateMarksonAcquiredLoans" xlink:label="loc_wal_InterestRateMarksonAcquiredLoans_4AEB9E104F2C23B50BD583F703CE7629" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_2115BD28FDF43DAFF37483F703CE12F2_negatedLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_2115BD28FDF43DAFF37483F703CE12F2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Net deferred loan fees and costs </link:label>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_2115BD28FDF43DAFF37483F703CE12F2_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableDeferredIncome_2115BD28FDF43DAFF37483F703CE12F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Deferred Income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableDeferredIncome_2115BD28FDF43DAFF37483F703CE12F2" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableAllowance_7B9EA7685DAFC6094C6283F703CE38EB_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableAllowance_7B9EA7685DAFC6094C6283F703CE38EB" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Allowance for credit losses </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance_7B9EA7685DAFC6094C6283F703CE38EB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableAllowance_7B9EA7685DAFC6094C6283F703CE38EB" xlink:to="lab_us-gaap_LoansAndLeasesReceivableAllowance_7B9EA7685DAFC6094C6283F703CE38EB" xlink:type="arc"/>

<link:label id="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27_terseLabel_en-US" xlink:label="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Tax Year 2015 [Member] </link:label>

<link:label id="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27_label_en-US" xlink:label="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Grant year 2015 [Member] </link:label>

<link:label id="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27_documentation_en-US" xlink:label="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Grant year 2015 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Grantyear2015Member" xlink:label="loc_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27" xlink:to="lab_wal_Grantyear2015Member_C3CB35F26550C9C7A50682C60365EC27" xlink:type="arc"/>

<link:label id="lab_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802_terseLabel_en-US" xlink:label="lab_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Tax Year 2016 [Member] </link:label>

<link:label id="lab_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802_label_en-US" xlink:label="lab_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Grant year 2016 [Member] </link:label>

<link:label id="lab_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802_documentation_en-US" xlink:label="lab_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Grant year 2016 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Grantyear2016Member" xlink:label="loc_wal_Grantyear2016Member_D80DF9534FB2983B959082C603669802" xlink:type="locator"/>

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<link:label id="lab_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A_terseLabel_en-US" xlink:label="lab_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Grant year 2017 [Member] </link:label>

<link:label id="lab_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A_label_en-US" xlink:label="lab_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Grant year 2017 [Member] </link:label>

<link:label id="lab_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A_documentation_en-US" xlink:label="lab_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Grant year 2017 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Grantyear2017Member" xlink:label="loc_wal_Grantyear2017Member_47EE648C9D2A3E1E665882C603669F4A" xlink:type="locator"/>

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<link:label id="lab_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC_terseLabel_en-US" xlink:label="lab_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2017 [Member] [Domain] </link:label>

<link:label id="lab_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC_label_en-US" xlink:label="lab_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Grant year 2018 [Member] </link:label>

<link:label id="lab_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC_documentation_en-US" xlink:label="lab_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Grant year 2018 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_Grantyear2018Member" xlink:label="loc_wal_Grantyear2018Member_242A384A11138BF642E782C60366B9EC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_5B121E7D3E262B80229C82C603690142_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_5B121E7D3E262B80229C82C603690142" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized </link:label>

<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_5B121E7D3E262B80229C82C603690142_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_5B121E7D3E262B80229C82C603690142" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_5B121E7D3E262B80229C82C603690142" xlink:type="locator"/>

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<link:label id="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965_terseLabel_en-US" xlink:label="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Offering Cost from Issuance of Common Stock </link:label>

<link:label id="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965_label_en-US" xlink:label="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Offering Cost from Issuance of Common Stock </link:label>

<link:label id="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965_documentation_en-US" xlink:label="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Offering cost related to issuance of common stock during the period. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_OfferingCostfromIssuanceofCommonStock" xlink:label="loc_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965" xlink:to="lab_wal_OfferingCostfromIssuanceofCommonStock_39AC1603CFBBF7B4358B82C6036A3965" xlink:type="arc"/>

<link:label id="lab_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury Stock, Shares, Acquired </link:label>

<link:label id="lab_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9_label_en-US" xlink:label="lab_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock, Shares, Acquired </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9" xlink:to="lab_us-gaap_TreasuryStockSharesAcquired_4DCBDE953F1456E49F8A82C6036A25C9" xlink:type="arc"/>

<link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_8CEF9ADEB827D8B8798E82C6036A3D8B_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_8CEF9ADEB827D8B8798E82C6036A3D8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount </link:label>

<link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_8CEF9ADEB827D8B8798E82C6036A3D8B_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_8CEF9ADEB827D8B8798E82C6036A3D8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_8CEF9ADEB827D8B8798E82C6036A3D8B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_A596DD7C2690A308136782C6036A6174_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_A596DD7C2690A308136782C6036A6174" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term </link:label>

<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_A596DD7C2690A308136782C6036A6174_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_A596DD7C2690A308136782C6036A6174" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms </link:label>

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<link:label id="lab_us-gaap_CommonStockSharesIssued_20F30C6C82D9950E99B482C6036AAC3B_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_20F30C6C82D9950E99B482C6036AAC3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Issued </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_20F30C6C82D9950E99B482C6036AAC3B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_20F30C6C82D9950E99B482C6036AAC3B" xlink:to="lab_us-gaap_CommonStockSharesIssued_20F30C6C82D9950E99B482C6036AAC3B" xlink:type="arc"/>

<link:label id="lab_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2_terseLabel_en-US" xlink:label="lab_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Common Stock, Gross </link:label>

<link:label id="lab_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2_label_en-US" xlink:label="lab_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Common Stock, Gross </link:label>

<link:label id="lab_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2_documentation_en-US" xlink:label="lab_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Proceeds from issuance of common stock, gross </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ProceedsfromIssuanceofCommonStockGross" xlink:label="loc_wal_ProceedsfromIssuanceofCommonStockGross_AC07AECEAAF97FA56B0F82C6036C08D2" xlink:type="locator"/>

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<link:label id="lab_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE_label_en-US" xlink:label="lab_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subordinated Debt Details [Abstract] </link:label>

<link:label id="lab_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE_documentation_en-US" xlink:label="lab_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Subordinated Debt Details [Abstract] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_SubordinatedDebtDetailsAbstract" xlink:label="loc_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE" xlink:to="lab_wal_SubordinatedDebtDetailsAbstract_077F0138CB0819ABD15934F77D154FDE" xlink:type="arc"/>

<link:label id="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E_terseLabel_en-US" xlink:label="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subordinated Debentures Maturing July 2056 [Member] </link:label>

<link:label id="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E_label_en-US" xlink:label="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subordinated Debentures Maturing July 2056 [Member] </link:label>

<link:label id="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E_documentation_en-US" xlink:label="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Subordinated Debentures Maturing July 2056 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_SubordinatedDebenturesMaturingJuly2056Member" xlink:label="loc_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E" xlink:to="lab_wal_SubordinatedDebenturesMaturingJuly2056Member_42378402A3BB60080BF134F77D17522E" xlink:type="arc"/>

<link:label id="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B_terseLabel_en-US" xlink:label="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subordinated Debentures Maturing July 2025 [Member] </link:label>

<link:label id="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B_label_en-US" xlink:label="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subordinated Debentures Maturing July 2025 [Member] </link:label>

<link:label id="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B_documentation_en-US" xlink:label="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Subordinated Debentures Maturing July 2025 [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_SubordinatedDebenturesMaturingJuly2025Member" xlink:label="loc_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B" xlink:to="lab_wal_SubordinatedDebenturesMaturingJuly2025Member_DC7A8CD2F6E62C1AC46934F77D18F52B" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Face Amount </link:label>

<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Face Amount </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_C8DA6D5EB206D5C1C3EB34F77D19B14C" xlink:type="arc"/>

<link:label id="lab_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4_terseLabel_en-US" xlink:label="lab_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subordinated Debt </link:label>

<link:label id="lab_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4_label_en-US" xlink:label="lab_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subordinated Debt </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubordinatedDebt" xlink:label="loc_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4" xlink:to="lab_us-gaap_SubordinatedDebt_2E1D87DC2DAF51A7AE4234F77D19E8E4" xlink:type="arc"/>

<link:label id="lab_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Issuance Cost </link:label>

<link:label id="lab_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Issuance Costs, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28" xlink:to="lab_us-gaap_DeferredFinanceCostsGross_BE00ECAD2BD45B1032EF34F77D19BB28" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5CAD65B536EF3F545CD234F77D1AA94E_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5CAD65B536EF3F545CD234F77D1AA94E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5CAD65B536EF3F545CD234F77D1AA94E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5CAD65B536EF3F545CD234F77D1AA94E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_5CAD65B536EF3F545CD234F77D1AA94E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_0C44064DF33DABE5ECF681E2002DEE1C_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_0C44064DF33DABE5ECF681E2002DEE1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_0C44064DF33DABE5ECF681E2002DEE1C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_0C44064DF33DABE5ECF681E2002DEE1C" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_0C44064DF33DABE5ECF681E2002DEE1C" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_5EDD1A05D91D21A533E581E741C4BE1C_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_5EDD1A05D91D21A533E581E741C4BE1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Payments of Ordinary Dividends, Common Stock </link:label>

<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_5EDD1A05D91D21A533E581E741C4BE1C_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_5EDD1A05D91D21A533E581E741C4BE1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Ordinary Dividends, Common Stock </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_5EDD1A05D91D21A533E581E741C4BE1C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_2B8B61C4767715FEC34B81E2002D7261_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_2B8B61C4767715FEC34B81E2002D7261" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from operating activities: </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_2B8B61C4767715FEC34B81E2002D7261_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_2B8B61C4767715FEC34B81E2002D7261" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities [Abstract] </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_2B8B61C4767715FEC34B81E2002D7261" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_2B8B61C4767715FEC34B81E2002D7261" xlink:type="arc"/>

<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_F9807F6E2D799DA0B2EE81E2002D027E_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_F9807F6E2D799DA0B2EE81E2002D027E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments to reconcile net income to cash provided by operating activities: </link:label>

<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_F9807F6E2D799DA0B2EE81E2002D027E_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_F9807F6E2D799DA0B2EE81E2002D027E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </link:label>

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<link:label id="lab_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation and amortization </link:label>

<link:label id="lab_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F_label_en-US" xlink:label="lab_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation, Depletion and Amortization, Nonproduction </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F" xlink:to="lab_us-gaap_DepreciationAndAmortization_C3A09025C7B15D1D1E6481E2003C177F" xlink:type="arc"/>

<link:label id="lab_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation </link:label>

<link:label id="lab_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Noncash Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43" xlink:to="lab_us-gaap_ShareBasedCompensation_85A5D98EFD0DE1D41FE281E2003CBC43" xlink:type="arc"/>

<link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred income taxes </link:label>

<link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Taxes and Tax Credits </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221" xlink:to="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_46BA175CA8494040F9BA81E2003C2221" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9_negatedLabel_en-US" xlink:label="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Amortization of net premiums for investment securities </link:label>

<link:label id="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9_label_en-US" xlink:label="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accretion (Amortization) of Discounts and Premiums, Investments </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9" xlink:to="lab_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_AF2699DAD3D52456F76081E2003C53C9" xlink:type="arc"/>

<link:label id="lab_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of operating lease right of use asset </link:label>

<link:label id="lab_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseExpense" xlink:label="loc_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F" xlink:to="lab_us-gaap_OperatingLeaseExpense_F1E3EE609ED27010FF7C81E2003CE44F" xlink:type="arc"/>

<link:label id="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5_negatedTerseLabel_en-US" xlink:label="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Accretion of fair market value adjustments on loans acquired from business combinations </link:label>

<link:label id="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5_label_en-US" xlink:label="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accretion And Amortization Fair Market Value Adjustments Relating To Acquisitions of Loans </link:label>

<link:label id="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5_documentation_en-US" xlink:label="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accretion And Amortization Fair Market Value Adjustments Relating To Acquisitions of Loans </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans" xlink:label="loc_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5" xlink:to="lab_wal_AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans_E9E5E13209ECD8BE88A681E2003C92D5" xlink:type="arc"/>

<link:label id="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC_negatedTerseLabel_en-US" xlink:label="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Accretion and amortization of fair market value adjustments on other assets and liabilities acquired from business combinations </link:label>

<link:label id="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC_label_en-US" xlink:label="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accretion and Amortization Fair Market Value Adjustments Relating to Acquisitions of Other Assets and Liabilities </link:label>

<link:label id="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC_documentation_en-US" xlink:label="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accretion and Amortization Fair Market Value Adjustments Relating to Acquisitions of Other Assets and Liabilities </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities" xlink:label="loc_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC" xlink:to="lab_wal_AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities_0B1FA7F30926D857E9BF81E2003C76BC" xlink:type="arc"/>

<link:label id="lab_us-gaap_BankOwnedLifeInsuranceIncome_171BA433A9048050CBC081E2003C258C_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsuranceIncome_171BA433A9048050CBC081E2003C258C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Income from bank owned life insurance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BankOwnedLifeInsuranceIncome" xlink:label="loc_us-gaap_BankOwnedLifeInsuranceIncome_171BA433A9048050CBC081E2003C258C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BankOwnedLifeInsuranceIncome_171BA433A9048050CBC081E2003C258C" xlink:to="lab_us-gaap_BankOwnedLifeInsuranceIncome_171BA433A9048050CBC081E2003C258C" xlink:type="arc"/>

<link:label id="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC_terseLabel_en-US" xlink:label="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> (Gains) / Losses on: </link:label>

<link:label id="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC_label_en-US" xlink:label="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gains Losses On [Abstract] </link:label>

<link:label id="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC_documentation_en-US" xlink:label="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> (Gains)/Losses on. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_GainsLossesOnAbstract" xlink:label="loc_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC" xlink:to="lab_wal_GainsLossesOnAbstract_515C2E6BD8979739768981E2003CEBCC" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain (loss) on sales of investment securities, net </link:label>

<link:label id="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30_label_en-US" xlink:label="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt and Equity Securities, Realized Gain (Loss) </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtAndEquitySecuritiesRealizedGainLoss" xlink:label="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30" xlink:to="lab_us-gaap_DebtAndEquitySecuritiesRealizedGainLoss_CCD1B6211CCF19D85F3681E2003C9A30" xlink:type="arc"/>

<link:label id="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_717ECCAA1EEF55C392A481E2003C6C53_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_717ECCAA1EEF55C392A481E2003C6C53" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Assets measured at fair value, net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_717ECCAA1EEF55C392A481E2003C6C53" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_717ECCAA1EEF55C392A481E2003C6C53" xlink:to="lab_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_717ECCAA1EEF55C392A481E2003C6C53" xlink:type="arc"/>

<link:label id="lab_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Sale of loans </link:label>

<link:label id="lab_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64_label_en-US" xlink:label="lab_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Sales of Loans, Net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSalesOfLoansNet" xlink:label="loc_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64" xlink:to="lab_us-gaap_GainLossOnSalesOfLoansNet_EE66209EA843B8AB7CF681E2003C3D64" xlink:type="arc"/>

<link:label id="lab_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6_negatedTerseLabel_en-US" xlink:label="lab_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other assets acquired through foreclosure, net </link:label>

<link:label id="lab_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6_label_en-US" xlink:label="lab_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain Loss On Foreclosed Assets </link:label>

<link:label id="lab_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6_documentation_en-US" xlink:label="lab_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Gain loss on foreclosed assets. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_GainLossOnForeclosedAssets" xlink:label="loc_wal_GainLossOnForeclosedAssets_79206AFD05CAF97E76A281E2003C9BB6" xlink:type="locator"/>

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<link:label id="lab_wal_ValuationAdjustmentsOfOtherRepossessedAssetsNet_8446CCCDB4F49DFAA67F81E2003C3853_negatedTerseLabel_en-US" xlink:label="lab_wal_ValuationAdjustmentsOfOtherRepossessedAssetsNet_8446CCCDB4F49DFAA67F81E2003C3853" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Valuation adjustments of other repossessed assets, net </link:label>

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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_C07B731566D15BB8D09681E2003C4F59_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_C07B731566D15BB8D09681E2003C4F59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Liabilities </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_C07B731566D15BB8D09681E2003C4F59" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_C07B731566D15BB8D09681E2003C4F59" xlink:type="arc"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_7F2CFDA8D515CF3F264381E2003C18C7_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_7F2CFDA8D515CF3F264381E2003C18C7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by operating activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_7F2CFDA8D515CF3F264381E2003C18C7_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_7F2CFDA8D515CF3F264381E2003C18C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7F2CFDA8D515CF3F264381E2003C18C7" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_7F2CFDA8D515CF3F264381E2003C18C7" xlink:type="arc"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_85205A1489D1FEC4E99C81E2003C9E50_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_85205A1489D1FEC4E99C81E2003C9E50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from investing activities: </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_85205A1489D1FEC4E99C81E2003C9E50_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_85205A1489D1FEC4E99C81E2003C9E50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities [Abstract] </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_85205A1489D1FEC4E99C81E2003C9E50" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_85205A1489D1FEC4E99C81E2003C9E50" xlink:type="arc"/>

<link:label id="lab_us-gaap_MarketableSecuritiesAbstract_C8CB30F18FC6C37B5CD581E2003C8F57_terseLabel_en-US" xlink:label="lab_us-gaap_MarketableSecuritiesAbstract_C8CB30F18FC6C37B5CD581E2003C8F57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment securities - trading </link:label>

<link:label id="lab_us-gaap_MarketableSecuritiesAbstract_C8CB30F18FC6C37B5CD581E2003C8F57_label_en-US" xlink:label="lab_us-gaap_MarketableSecuritiesAbstract_C8CB30F18FC6C37B5CD581E2003C8F57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Marketable Securities [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MarketableSecuritiesAbstract" xlink:label="loc_us-gaap_MarketableSecuritiesAbstract_C8CB30F18FC6C37B5CD581E2003C8F57" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments_17EB067B9A01D75E7B5081E2003C05FE_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments_17EB067B9A01D75E7B5081E2003C05FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Principal pay downs and maturities </link:label>

<link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments_17EB067B9A01D75E7B5081E2003C05FE_label_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments_17EB067B9A01D75E7B5081E2003C05FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Maturities, Prepayments and Calls of Other Investments </link:label>

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<link:label id="lab_wal_ProceedsFromSaleOfSecuritiesMeasuredAtFairValue_D5CD5D56DBCFC670822A81E2003CF780_terseLabel_en-US" xlink:label="lab_wal_ProceedsFromSaleOfSecuritiesMeasuredAtFairValue_D5CD5D56DBCFC670822A81E2003CF780" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sales </link:label>

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<link:label id="lab_us-gaap_AvailableForSaleSecuritiesAbstract_668EC18E03BCBA64F30D81E2003CA3D2_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesAbstract_668EC18E03BCBA64F30D81E2003CA3D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment securities - AFS </link:label>

<link:label id="lab_us-gaap_AvailableForSaleSecuritiesAbstract_668EC18E03BCBA64F30D81E2003CA3D2_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesAbstract_668EC18E03BCBA64F30D81E2003CA3D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Securities, Available-for-sale [Abstract] </link:label>

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<link:label id="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_E59D7F26A969919F8E2081E2003C0265_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireAvailableForSaleSecurities_E59D7F26A969919F8E2081E2003C0265" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Available-for-sale Securities </link:label>

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<link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_0278443FB851AAA7CE9381E2003C5021_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_0278443FB851AAA7CE9381E2003C5021" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Principal pay downs and maturities </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_0278443FB851AAA7CE9381E2003C5021" xlink:to="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_0278443FB851AAA7CE9381E2003C5021" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sales </link:label>

<link:label id="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Available-for-sale Securities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20" xlink:to="lab_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_8AFA52FE05C359C22DFB81E2003C8B20" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Purchases </link:label>

<link:label id="lab_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Held-to-maturity Securities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:label="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B" xlink:to="lab_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_F242D0BFE17321966CF981E2003C094B" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Principal pay downs and maturities </link:label>

<link:label id="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407_label_en-US" xlink:label="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407" xlink:to="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_CE9923934E65DA8AFC7081E2003C8407" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sales </link:label>

<link:label id="lab_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Held-to-maturity Securities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities" xlink:label="loc_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F" xlink:to="lab_us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities_6144066314FC68020A5581E2003CB46F" xlink:type="arc"/>

<link:label id="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08_negatedTerseLabel_en-US" xlink:label="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Purchases </link:label>

<link:label id="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08_label_en-US" xlink:label="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Securities, Equity </link:label>

<link:label id="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08_documentation_en-US" xlink:label="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The cash outflow to acquire equity securities. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_PaymentstoAcquireSecuritiesEquity" xlink:label="loc_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08" xlink:to="lab_wal_PaymentstoAcquireSecuritiesEquity_F91F572653C1B410AA6081E2003C2F08" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Redemption of principal (reinvestment of dividends) </link:label>

<link:label id="lab_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Dividends Received </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDividendsReceived" xlink:label="loc_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0" xlink:to="lab_us-gaap_ProceedsFromDividendsReceived_7B1CC3E8A467899AADDF81E2003CA6F0" xlink:type="arc"/>

<link:label id="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05_terseLabel_en-US" xlink:label="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sales </link:label>

<link:label id="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05_label_en-US" xlink:label="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Equity securities, FV-NI </link:label>

<link:label id="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05_documentation_en-US" xlink:label="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Equity securities, FV-NI </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ProceedsfromSaleofEquitysecuritiesFVNI" xlink:label="loc_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05" xlink:to="lab_wal_ProceedsfromSaleofEquitysecuritiesFVNI_E8FA6FE7D9318BA601BD81E2003C0C05" xlink:type="arc"/>

<link:label id="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1_negatedLabel_en-US" xlink:label="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Purchase of investment tax credits </link:label>

<link:label id="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1_label_en-US" xlink:label="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Purchase Of Investment Tax Credits </link:label>

<link:label id="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1_documentation_en-US" xlink:label="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Purchase of investment tax credits. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_PurchaseOfInvestmentTaxCredits" xlink:label="loc_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1" xlink:to="lab_wal_PurchaseOfInvestmentTaxCredits_C181132848CA399EC97E81E2003CFEE1" xlink:type="arc"/>

<link:label id="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E_negatedTerseLabel_en-US" xlink:label="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Purchase of SBIC investments </link:label>

<link:label id="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E_label_en-US" xlink:label="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Purchase of SBIC Investments </link:label>

<link:label id="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E_documentation_en-US" xlink:label="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Purchase of SBIC Investments </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_PurchaseofSBICInvestments" xlink:label="loc_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E" xlink:to="lab_wal_PurchaseofSBICInvestments_A8ABA3A138B7D625308781E2003C824E" xlink:type="arc"/>

<link:label id="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7_terseLabel_en-US" xlink:label="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Sale (purchase) of money market investments, net </link:label>

<link:label id="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7_label_en-US" xlink:label="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale (Payments to Purchase) Investment In Money Market </link:label>

<link:label id="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7_documentation_en-US" xlink:label="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The cash inflow or outflow related to increase or decrease in the investment of funds in a money market account held at a non-financial institution. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket" xlink:label="loc_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7" xlink:to="lab_wal_ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket_EF980870DA657123510D81E2003C38E7" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from bank owned life insurance </link:label>

<link:label id="lab_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Life Insurance Policy </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromLifeInsurancePolicies" xlink:label="loc_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD" xlink:to="lab_us-gaap_ProceedsFromLifeInsurancePolicies_BC93E840EABFC38C0E0081E2004CF6CD" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> (Purchase) liquidation of restricted stock, net </link:label>

<link:label id="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Restricted Investments </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireRestrictedInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D" xlink:to="lab_us-gaap_PaymentsToAcquireRestrictedInvestments_4A093F2E26729A7D0B5E81E2004C098D" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Loan fundings and principal collections, net </link:label>

<link:label id="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for (Proceeds from) Loans and Leases </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases" xlink:label="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F" xlink:to="lab_us-gaap_PaymentsForProceedsFromLoansAndLeases_CD9462FDCA327C28432381E2004CED0F" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_34EB0FAC9EF94954FA4381E2004CD2D6_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_34EB0FAC9EF94954FA4381E2004CD2D6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Purchase of premises, equipment, and other assets, net </link:label>

<link:label id="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_34EB0FAC9EF94954FA4381E2004CD2D6_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_34EB0FAC9EF94954FA4381E2004CD2D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for (Proceeds from) Productive Assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromProductiveAssets" xlink:label="loc_us-gaap_PaymentsForProceedsFromProductiveAssets_34EB0FAC9EF94954FA4381E2004CD2D6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans_4346E7EE0136B91FA81C81E2004C62C1_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans_4346E7EE0136B91FA81C81E2004C62C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sale of other real estate owned and repossessed assets, net </link:label>

<link:label id="lab_us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans_4346E7EE0136B91FA81C81E2004C62C1_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans_4346E7EE0136B91FA81C81E2004C62C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans" xlink:label="loc_us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans_4346E7EE0136B91FA81C81E2004C62C1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAcquiredFromAcquisition_4F3DB95DEE05F723FC6081E2004C6E5C_terseLabel_en-US" xlink:label="lab_us-gaap_CashAcquiredFromAcquisition_4F3DB95DEE05F723FC6081E2004C6E5C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents (used) acquired in acquisitions, net </link:label>

<link:label id="lab_us-gaap_CashAcquiredFromAcquisition_4F3DB95DEE05F723FC6081E2004C6E5C_label_en-US" xlink:label="lab_us-gaap_CashAcquiredFromAcquisition_4F3DB95DEE05F723FC6081E2004C6E5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash Acquired from Acquisition </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:label="loc_us-gaap_CashAcquiredFromAcquisition_4F3DB95DEE05F723FC6081E2004C6E5C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in investing activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4EE4BBF00E042189165881E2004CE811" xlink:type="arc"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from financing activities: </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BF5C114921F23DC00CB581E2004CAC5A" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInDeposits_8AD651770D7EB2BE7E1181E2004C6B27_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeposits_8AD651770D7EB2BE7E1181E2004C6B27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net increase (decrease) in deposits </link:label>

<link:label id="lab_us-gaap_IncreaseDecreaseInDeposits_8AD651770D7EB2BE7E1181E2004C6B27_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeposits_8AD651770D7EB2BE7E1181E2004C6B27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Deposits </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInDeposits" xlink:label="loc_us-gaap_IncreaseDecreaseInDeposits_8AD651770D7EB2BE7E1181E2004C6B27" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net (decrease) increase in borrowings </link:label>

<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from (Repayments of) Debt </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9" xlink:to="lab_us-gaap_ProceedsFromRepaymentsOfDebt_B72D1B2A9CA7C356903381E2004C1ED9" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from exercise of common stock options </link:label>

<link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED_label_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Stock Options Exercised </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED" xlink:to="lab_us-gaap_ProceedsFromStockOptionsExercised_96F6B665EC7718EF23B781E2004C20ED" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Payment, Tax Withholding, Share-based Payment Arrangement </link:label>

<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8_label_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payment, Tax Withholding, Share-based Payment Arrangement </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8" xlink:to="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_DD53616650BA15C4E7F181E63C39C6F8" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock repurchases </link:label>

<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for Repurchase of Common Stock </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_405BB236E4BA3614B9D081E2004C50B1" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_03B3CCF36DB53ED4BC4381E2004CC4CA_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_03B3CCF36DB53ED4BC4381E2004CC4CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from issuance of common stock </link:label>

<link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_03B3CCF36DB53ED4BC4381E2004CC4CA_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_03B3CCF36DB53ED4BC4381E2004CC4CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Common Stock </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_03B3CCF36DB53ED4BC4381E2004CC4CA" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_4F9031C902EAF9014EC781E2004C2507_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_4F9031C902EAF9014EC781E2004C2507" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by financing activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_4F9031C902EAF9014EC781E2004C2507_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_4F9031C902EAF9014EC781E2004C2507" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4F9031C902EAF9014EC781E2004C2507" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_836A04A9662BE974785481E2004CCC87_totalLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_836A04A9662BE974785481E2004CCC87" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net (decrease) increase in cash, cash equivalents, and restricted cash </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_836A04A9662BE974785481E2004CCC87_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_836A04A9662BE974785481E2004CCC87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Period Increase (Decrease) </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_836A04A9662BE974785481E2004CCC87" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_4B0DC6C50FA768D9BF3881E2004CF66D_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_4B0DC6C50FA768D9BF3881E2004CF66D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Cash, cash equivalents, and restricted cash at beginning of period </link:label>

<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_4B0DC6C50FA768D9BF3881E2004CF66D_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_4B0DC6C50FA768D9BF3881E2004CF66D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_56E94C5805A35335362781E2004C016A_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_56E94C5805A35335362781E2004C016A" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Cash, cash equivalents, and restricted cash at end of period </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_56E94C5805A35335362781E2004C016A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_25695ADD70058654A50581E2004C8F08_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_25695ADD70058654A50581E2004C8F08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash paid (received) during the period for: </link:label>

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<link:label id="lab_us-gaap_InterestPaid_21A0B765297FD3F130C781E2004C2678_label_en-US" xlink:label="lab_us-gaap_InterestPaid_21A0B765297FD3F130C781E2004C2678" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Paid, Including Capitalized Interest, Operating and Investing Activities </link:label>

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<link:label id="lab_us-gaap_IncomeTaxesPaidNet_2C67F20516B8052877DB81E2004C5DE6_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_2C67F20516B8052877DB81E2004C5DE6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Taxes Paid, Net </link:label>

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<link:label id="lab_us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract_506A7019478444B2164581E2004CF677_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract_506A7019478444B2164581E2004CF677" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-cash operating, investing, and financing activity: </link:label>

<link:label id="lab_us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract_506A7019478444B2164581E2004CF677_label_en-US" xlink:label="lab_us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract_506A7019478444B2164581E2004CF677" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Noncash Investing and Financing Items [Abstract] </link:label>

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<link:label id="lab_us-gaap_TransferToOtherRealEstate_18CDC32556D41EBE165F81E2004C202B_terseLabel_en-US" xlink:label="lab_us-gaap_TransferToOtherRealEstate_18CDC32556D41EBE165F81E2004C202B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Transfers to other assets acquired through foreclosure, net </link:label>

<link:label id="lab_us-gaap_TransferToOtherRealEstate_18CDC32556D41EBE165F81E2004C202B_label_en-US" xlink:label="lab_us-gaap_TransferToOtherRealEstate_18CDC32556D41EBE165F81E2004C202B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Real Estate Owned, Transfer to Real Estate Owned </link:label>

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<link:label id="lab_wal_ChangeinUnfundedObligationsNonCash_0F8C33C62E92C0E3D0A181E2004C7043_terseLabel_en-US" xlink:label="lab_wal_ChangeinUnfundedObligationsNonCash_0F8C33C62E92C0E3D0A181E2004C7043" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in Unfunded Obligations Non Cash </link:label>

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<link:label id="lab_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554_terseLabel_en-US" xlink:label="lab_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unfunded commitments originated </link:label>

<link:label id="lab_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554_label_en-US" xlink:label="lab_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unfunded Commitments To Purchase Investment Tax Credits </link:label>

<link:label id="lab_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554_documentation_en-US" xlink:label="lab_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unfunded commitments to purchase investment tax credits. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits" xlink:label="loc_wal_UnfundedCommitmentsToPurchaseInvestmentTaxCredits_EE857167436FB875264581E2004C2554" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_6BFA524C1CDA198BD8C081E2004CD464_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_6BFA524C1CDA198BD8C081E2004CD464" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_6BFA524C1CDA198BD8C081E2004CD464" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NoncashContributionExpense_86C6FAADD68FAD6F176781E2004CF73F_terseLabel_en-US" xlink:label="lab_us-gaap_NoncashContributionExpense_86C6FAADD68FAD6F176781E2004CF73F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncash Contribution Expense </link:label>

<link:label id="lab_us-gaap_NoncashContributionExpense_86C6FAADD68FAD6F176781E2004CF73F_label_en-US" xlink:label="lab_us-gaap_NoncashContributionExpense_86C6FAADD68FAD6F176781E2004CF73F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncash Contribution Expense </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncashContributionExpense" xlink:label="loc_us-gaap_NoncashContributionExpense_86C6FAADD68FAD6F176781E2004CF73F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_41FC62CE0D280EC653A281E2004C0E25_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_41FC62CE0D280EC653A281E2004C0E25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in unrealized gain (loss) on AFS securities, net of tax </link:label>

<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_41FC62CE0D280EC653A281E2004C0E25_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_41FC62CE0D280EC653A281E2004C0E25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax </link:label>

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<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_33DFEA01FB8F7F39EE1FF24876C41775_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_33DFEA01FB8F7F39EE1FF24876C41775" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>

<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_33DFEA01FB8F7F39EE1FF24876C41775_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_33DFEA01FB8F7F39EE1FF24876C41775" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>

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<link:label id="lab_srt_ConsolidationItemsAxis_0DEA4875CF738028EA9FF24876C54BDE_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_0DEA4875CF738028EA9FF24876C54BDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>

<link:label id="lab_srt_ConsolidationItemsAxis_0DEA4875CF738028EA9FF24876C54BDE_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_0DEA4875CF738028EA9FF24876C54BDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>

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<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_282322D7A0C9301782EEF24876C5297C_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_282322D7A0C9301782EEF24876C5297C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>

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<link:label id="lab_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Repayments, Related Parties </link:label>

<link:label id="lab_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538_label_en-US" xlink:label="lab_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayment of Notes Receivable from Related Parties </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentOfNotesReceivableFromRelatedParties" xlink:label="loc_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538" xlink:to="lab_us-gaap_RepaymentOfNotesReceivableFromRelatedParties_1DED309B56CB07B0C17B88FB2B2F9538" xlink:type="arc"/>

<link:label id="lab_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Deposit Liabilities </link:label>

<link:label id="lab_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Deposit Liabilities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDepositLiabilities" xlink:label="loc_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC" xlink:to="lab_us-gaap_RelatedPartyDepositLiabilities_CE2872FE060F5C5A870F88FB2B2F6CBC" xlink:type="arc"/>

<link:label id="lab_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest Expense, Related Party </link:label>

<link:label id="lab_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34_label_en-US" xlink:label="lab_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense, Related Party </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseRelatedParty" xlink:label="loc_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34" xlink:to="lab_us-gaap_InterestExpenseRelatedParty_0906D32E144FED1297DC88FB2B2FEB34" xlink:type="arc"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction, Expenses from Transactions with Related Party </link:label>

<link:label id="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction, Expenses from Transactions with Related Party </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty" xlink:label="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256" xlink:to="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_05F6C6ED0B77EA7FAE4C88FB2B30C256" xlink:type="arc"/>

<link:label id="lab_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest Income, Related Party </link:label>

<link:label id="lab_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77_label_en-US" xlink:label="lab_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Income, Related Party </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeRelatedParty" xlink:label="loc_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77" xlink:to="lab_us-gaap_InterestIncomeRelatedParty_BB2937CF9F05C6C16F5B88FB2B300D77" xlink:type="arc"/>

<link:label id="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D_terseLabel_en-US" xlink:label="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loan and Leases Receivable, Commitment Outstanding, Related Parties </link:label>

<link:label id="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D_label_en-US" xlink:label="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loan and Leases Receivable, Commitment Outstanding, Related Parties </link:label>

<link:label id="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D_documentation_en-US" xlink:label="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The amount of outstanding loan commitments to related parties, which obligate the lender to provide future funding to related parties pursuant to agreed-upon terms and conditions. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties" xlink:label="loc_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D" xlink:to="lab_wal_LoanandLeasesReceivableCommitmentOutstandingRelatedParties_B6C4250E7C6BC5E3667588FB2B30778D" xlink:type="arc"/>

<link:label id="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407_terseLabel_en-US" xlink:label="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party, OREO Sale </link:label>

<link:label id="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407_label_en-US" xlink:label="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party, OREO Sale </link:label>

<link:label id="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407_documentation_en-US" xlink:label="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The carrying value of OREO property sold to a related party during the period. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_RelatedPartyOREOSale" xlink:label="loc_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407" xlink:to="lab_wal_RelatedPartyOREOSale_4380E2BE1F912C35D4CB88FB2B30D407" xlink:type="arc"/>

<link:label id="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334_terseLabel_en-US" xlink:label="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party, Loss on OREO Sale </link:label>

<link:label id="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334_label_en-US" xlink:label="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party, Loss on OREO Sale </link:label>

<link:label id="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334_documentation_en-US" xlink:label="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Loss recognized on sale of OREO property to a related party during the period. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_RelatedPartyLossonOREOSale" xlink:label="loc_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334" xlink:to="lab_wal_RelatedPartyLossonOREOSale_7300FCCB3B3EBA44B2BF88FB2B306334" xlink:type="arc"/>

<link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments </link:label>

<link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting Disclosure [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87" xlink:to="lab_us-gaap_SegmentReportingDisclosureTextBlock_6729B8CABAFE7D018C0CF2487743BC87" xlink:type="arc"/>

<link:label id="lab_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0_label_en-US" xlink:label="lab_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Acquired loans [Abstract] </link:label>

<link:label id="lab_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0_documentation_en-US" xlink:label="lab_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Acquired loans [Abstract] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_AcquiredloansAbstract" xlink:label="loc_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0" xlink:to="lab_wal_AcquiredloansAbstract_94C7ECF2C132A9950C8AF24879FF1BB0" xlink:type="arc"/>

<link:label id="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717_terseLabel_en-US" xlink:label="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquired Non-Purchased Credit Impaired Loans [Member] </link:label>

<link:label id="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717_label_en-US" xlink:label="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Acquired Non-Purchased Credit Impaired Loans [Member] </link:label>

<link:label id="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717_documentation_en-US" xlink:label="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Acquired receivables that have not shown evidence of credit deterioration. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_AcquiredNonPurchasedCreditImpairedLoansMember" xlink:label="loc_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717" xlink:to="lab_wal_AcquiredNonPurchasedCreditImpairedLoansMember_E7BC874EDA476220271DF2487A027717" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosures [Table] </link:label>

<link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosures [Table] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_7FD0EF1D08C76995E88FF2487CB4C4CF" xlink:type="arc"/>

<link:label id="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E_terseLabel_en-US" xlink:label="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Largest individual counterparty [Member] </link:label>

<link:label id="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E_label_en-US" xlink:label="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Largest individual counterparty [Member] </link:label>

<link:label id="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E_documentation_en-US" xlink:label="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Largest individual counterparty [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_LargestindividualcounterpartyMember" xlink:label="loc_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E" xlink:to="lab_wal_LargestindividualcounterpartyMember_A76618AF4F7AEFA66F1BF2487CB55D6E" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosures [Line Items] </link:label>

<link:label id="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC_label_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosures [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC" xlink:to="lab_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_7C9D46586FF74781FFA5F2487CB511DC" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeAssets_E330D683D9571F54D345F2487CB5C5DF_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeAssets_E330D683D9571F54D345F2487CB5C5DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Largest gross exposure (positive derivative NPV) to an individual counterparty </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_E330D683D9571F54D345F2487CB5C5DF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeAssets_E330D683D9571F54D345F2487CB5C5DF" xlink:to="lab_us-gaap_DerivativeAssets_E330D683D9571F54D345F2487CB5C5DF" xlink:type="arc"/>

<link:label id="lab_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateral posted by this counterparty </link:label>

<link:label id="lab_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C_label_en-US" xlink:label="lab_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Collateral Already Posted, Aggregate Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CollateralAlreadyPostedAggregateFairValue" xlink:label="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C" xlink:to="lab_us-gaap_CollateralAlreadyPostedAggregateFairValue_269B598FB1169500BF74F2487CB5288C" xlink:type="arc"/>

<link:label id="lab_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative, Net Liability Position, Aggregate Fair Value </link:label>

<link:label id="lab_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79_label_en-US" xlink:label="lab_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative, Net Liability Position, Aggregate Fair Value </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNetLiabilityPositionAggregateFairValue" xlink:label="loc_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79" xlink:to="lab_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_202DEF740977CF427B36F2487CB5AE79" xlink:type="arc"/>

<link:label id="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A_terseLabel_en-US" xlink:label="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateral pledged to this counterparty </link:label>

<link:label id="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A_label_en-US" xlink:label="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Risk Derivative Collateral Pledged </link:label>

<link:label id="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A_documentation_en-US" xlink:label="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Credit risk derivative collateral pledged. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_CreditRiskDerivativeCollateralPledged" xlink:label="loc_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A" xlink:to="lab_wal_CreditRiskDerivativeCollateralPledged_13A9E08F7DC5B7BB1B9EF2487CB6C33A" xlink:type="arc"/>

<link:label id="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B_terseLabel_en-US" xlink:label="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net exposure after netting adjustments and collateral </link:label>

<link:label id="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B_label_en-US" xlink:label="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Exposure After Netting Adjustments And Collateral </link:label>

<link:label id="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B_documentation_en-US" xlink:label="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Net exposure after netting adjustments and collateral. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NetExposureAfterNettingAdjustmentsAndCollateral" xlink:label="loc_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B" xlink:to="lab_wal_NetExposureAfterNettingAdjustmentsAndCollateral_EA0423199869C5E6BCACF2487CB6373B" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Payments of Dividends </link:label>

<link:label id="lab_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Dividends </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="loc_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652" xlink:to="lab_us-gaap_PaymentsOfDividends_F8586114975E5EC4108763C256293652" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FDE4C9A9C6DD6FB1592D63C2562AE377_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FDE4C9A9C6DD6FB1592D63C2562AE377" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Equity in net undistributed earnings of subsidiaries </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FDE4C9A9C6DD6FB1592D63C2562AE377" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FDE4C9A9C6DD6FB1592D63C2562AE377" xlink:to="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FDE4C9A9C6DD6FB1592D63C2562AE377" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294_terseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other operating activities, net </link:label>

<link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294_label_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Operating Activities, Cash Flow Statement </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294" xlink:to="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_8B7934AA1D21AFA6F79563C2562A7294" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Purchases of securities </link:label>

<link:label id="lab_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Marketable Securities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="loc_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356" xlink:to="lab_us-gaap_PaymentsToAcquireMarketableSecurities_9527ED1FE9DDB6907E4563C2562BB356" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Capital contributions to subsidiaries </link:label>

<link:label id="lab_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Interest in Subsidiaries and Affiliates </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates" xlink:label="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9" xlink:to="lab_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_95A41E9128C7A2EC515D63C2562C2DB9" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other investing activities, net </link:label>

<link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for (Proceeds from) Other Investing Activities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37" xlink:to="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_0EE9DB0486035870509263C2562CED37" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from issuance of subordinated debt </link:label>

<link:label id="lab_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Debt, Net of Issuance Costs </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts" xlink:label="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95" xlink:to="lab_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_23E0A4A5477F6DC9650263C2562D5F95" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_FED2A47C28ECD9A9EAA163C2562D317B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_FED2A47C28ECD9A9EAA163C2562D317B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Payments for Repurchase of Common Stock </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_FED2A47C28ECD9A9EAA163C2562D317B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_FED2A47C28ECD9A9EAA163C2562D317B" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_FED2A47C28ECD9A9EAA163C2562D317B" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_9365A243C58A91BB6C0863C2562E9815_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_9365A243C58A91BB6C0863C2562E9815" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from exercise of common stock options </link:label>

<link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_9365A243C58A91BB6C0863C2562E9815_label_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_9365A243C58A91BB6C0863C2562E9815" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from (Payments for) Other Financing Activities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_9365A243C58A91BB6C0863C2562E9815" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_7C2637A2B76C90C9CB9663C2562F3EAB_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_7C2637A2B76C90C9CB9663C2562F3EAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net (decrease) increase in cash and cash equivalents </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_7C2637A2B76C90C9CB9663C2562F3EAB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_7C2637A2B76C90C9CB9663C2562F3EAB" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_7C2637A2B76C90C9CB9663C2562F3EAB" xlink:type="arc"/>

<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_8DCF20A4152F1092E73063C2562F34DB_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_8DCF20A4152F1092E73063C2562F34DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_8DCF20A4152F1092E73063C2562F34DB" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DerivativeLineItems_97ABCF32BAB699611ABD839702DA1522_label_en-US" xlink:label="lab_us-gaap_DerivativeLineItems_97ABCF32BAB699611ABD839702DA1522" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative [Line Items] </link:label>

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<link:label id="lab_wal_CreditMarkonAcquiredLoans_4578680EF21E66BC47BA829231B13F28_documentation_en-US" xlink:label="lab_wal_CreditMarkonAcquiredLoans_4578680EF21E66BC47BA829231B13F28" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Credit mark on acquired loans, a reduction to the net carrying value of the loan. </link:label>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans_9A8FD6D3A2A2305FCFC9829231B747C5_verboseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans_9A8FD6D3A2A2305FCFC9829231B747C5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Reduction in interest income due to nonaccrual loans </link:label>

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<link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Leases [Text Block] </link:label>

<link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Leases [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeasesTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C" xlink:to="lab_us-gaap_LesseeOperatingLeasesTextBlock_EEF1C4FB918BD9AA77993614C8761C0C" xlink:type="arc"/>

<link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4C0C9C7AA967A28B7083F2487DE886AB_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4C0C9C7AA967A28B7083F2487DE886AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived Intangible Assets [Table] </link:label>

<link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4C0C9C7AA967A28B7083F2487DE886AB_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4C0C9C7AA967A28B7083F2487DE886AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived Intangible Assets [Table] </link:label>

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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_A14C3762D134CAE5E9B4F2487DE8AD29_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_A14C3762D134CAE5E9B4F2487DE8AD29" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets by Major Class [Axis] </link:label>

<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_A14C3762D134CAE5E9B4F2487DE8AD29_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_A14C3762D134CAE5E9B4F2487DE8AD29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets by Major Class [Axis] </link:label>

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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F8ED56C18AC3FCFABF88F2487DE86147_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F8ED56C18AC3FCFABF88F2487DE86147" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Major Class Name [Domain] </link:label>

<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F8ED56C18AC3FCFABF88F2487DE86147_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F8ED56C18AC3FCFABF88F2487DE86147" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Major Class Name [Domain] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_F8ED56C18AC3FCFABF88F2487DE86147" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CoreDepositsMember_473950B2E48DA4D6C67AF2487DE8AB29_terseLabel_en-US" xlink:label="lab_us-gaap_CoreDepositsMember_473950B2E48DA4D6C67AF2487DE8AB29" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Core Deposits [Member] </link:label>

<link:label id="lab_us-gaap_CoreDepositsMember_473950B2E48DA4D6C67AF2487DE8AB29_label_en-US" xlink:label="lab_us-gaap_CoreDepositsMember_473950B2E48DA4D6C67AF2487DE8AB29" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Core Deposits [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CoreDepositsMember" xlink:label="loc_us-gaap_CoreDepositsMember_473950B2E48DA4D6C67AF2487DE8AB29" xlink:type="locator"/>

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<link:label id="lab_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709_terseLabel_en-US" xlink:label="lab_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Northern California [Member] </link:label>

<link:label id="lab_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709_label_en-US" xlink:label="lab_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Northern California [Member] </link:label>

<link:label id="lab_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709_documentation_en-US" xlink:label="lab_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Northern California [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_NorthernCaliforniaMember" xlink:label="loc_wal_NorthernCaliforniaMember_9B66CD6E3D756C2D6582F2487DEAD709" xlink:type="locator"/>

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<link:label id="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA_terseLabel_en-US" xlink:label="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Technology and Innovation [Member] </link:label>

<link:label id="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA_label_en-US" xlink:label="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Technology and Innovation [Member] </link:label>

<link:label id="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA_documentation_en-US" xlink:label="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Technology and Innovation [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_TechnologyandInnovationMember" xlink:label="loc_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA" xlink:to="lab_wal_TechnologyandInnovationMember_6C02B28951CA05D9EDE1F2487DEA6DDA" xlink:type="arc"/>

<link:label id="lab_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F_terseLabel_en-US" xlink:label="lab_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> HFF Loan Portfolio [Member] </link:label>

<link:label id="lab_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F_label_en-US" xlink:label="lab_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> HFF Loan Portfolio [Member] </link:label>

<link:label id="lab_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F_documentation_en-US" xlink:label="lab_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> HFF Loan Portfolio [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_HFFLoanPortfolioMember" xlink:label="loc_wal_HFFLoanPortfolioMember_F0E2E78C3F9C5DF93747F2487DEA049F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_9A9AEE56C808CFFCBC49F2487DEB669F_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_9A9AEE56C808CFFCBC49F2487DEB669F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets [Line Items] </link:label>

<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_9A9AEE56C808CFFCBC49F2487DEB669F_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_9A9AEE56C808CFFCBC49F2487DEB669F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_9A9AEE56C808CFFCBC49F2487DEB669F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_B01D8921257D8D53DB1EF2487DEB0167_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_B01D8921257D8D53DB1EF2487DEB0167" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Gross </link:label>

<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_B01D8921257D8D53DB1EF2487DEB0167_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_B01D8921257D8D53DB1EF2487DEB0167" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Gross </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_B01D8921257D8D53DB1EF2487DEB0167" xlink:type="locator"/>

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<link:label id="lab_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5_terseLabel_en-US" xlink:label="lab_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Trade Names, Gross </link:label>

<link:label id="lab_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5_label_en-US" xlink:label="lab_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Indefinite-Lived Trade Name, Gross </link:label>

<link:label id="lab_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5_documentation_en-US" xlink:label="lab_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amount before impairment of trade name intangible asset. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_IndefiniteLivedTradeNameGross" xlink:label="loc_wal_IndefiniteLivedTradeNameGross_24B7B01475CE89F5C563F2487DEB1EB5" xlink:type="locator"/>

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<link:label id="lab_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8_terseLabel_en-US" xlink:label="lab_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trade Name, Impaired, Accumulated Impairment Loss </link:label>

<link:label id="lab_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8_label_en-US" xlink:label="lab_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Trade Name, Impaired, Accumulated Impairment Loss </link:label>

<link:label id="lab_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8_documentation_en-US" xlink:label="lab_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amount of accumulated impairment loss on trade name. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_TradeNameImpairedAccumulatedImpairmentLoss" xlink:label="loc_wal_TradeNameImpairedAccumulatedImpairmentLoss_14EBFD9AA2F142A23002F2487DEC7FF8" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C38A9A9CB6B79232D414F2487DECE7C7_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C38A9A9CB6B79232D414F2487DECE7C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Accumulated Amortization </link:label>

<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C38A9A9CB6B79232D414F2487DECE7C7_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C38A9A9CB6B79232D414F2487DECE7C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Accumulated Amortization </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_C38A9A9CB6B79232D414F2487DECE7C7" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IndefiniteLivedTradeNames_A9A5CD7CFA2E0597D42DF2487DEC89EB_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedTradeNames_A9A5CD7CFA2E0597D42DF2487DEC89EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Indefinite-Lived Trade Names </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedTradeNames" xlink:label="loc_us-gaap_IndefiniteLivedTradeNames_A9A5CD7CFA2E0597D42DF2487DEC89EB" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_EAFBEAD8E17B946275CCF2487DEC0E4E_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_EAFBEAD8E17B946275CCF2487DEC0E4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net </link:label>

<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_EAFBEAD8E17B946275CCF2487DEC0E4E_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_EAFBEAD8E17B946275CCF2487DEC0E4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net </link:label>

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<link:label id="lab_us-gaap_OperatingSegmentsMember_97811824F8CF8EF69DCF83F6FE8FA58B_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_97811824F8CF8EF69DCF83F6FE8FA58B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Segments [Member] </link:label>

<link:label id="lab_us-gaap_OperatingSegmentsMember_97811824F8CF8EF69DCF83F6FE8FA58B_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_97811824F8CF8EF69DCF83F6FE8FA58B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Segments [Member] </link:label>

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<link:label id="lab_srt_ReportableGeographicalComponentsMember_D4F921B9572A3628F5E483F6FE8F47E4_terseLabel_en-US" xlink:label="lab_srt_ReportableGeographicalComponentsMember_D4F921B9572A3628F5E483F6FE8F47E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reportable Geographical Components [Member] </link:label>

<link:label id="lab_srt_ReportableGeographicalComponentsMember_D4F921B9572A3628F5E483F6FE8F47E4_label_en-US" xlink:label="lab_srt_ReportableGeographicalComponentsMember_D4F921B9572A3628F5E483F6FE8F47E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reportable Geographical Components [Member] </link:label>

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<link:label id="lab_us-gaap_CorporateNonSegmentMember_980CF913A3D701BD526483F6FE8F4C61_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_980CF913A3D701BD526483F6FE8F4C61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate & Other </link:label>

<link:label id="lab_us-gaap_CorporateNonSegmentMember_980CF913A3D701BD526483F6FE8F4C61_label_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_980CF913A3D701BD526483F6FE8F4C61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate, Non-Segment [Member] </link:label>

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<link:label id="lab_stpr_NV_D9E32D64DA954FB4B98583F6FE8F2201_terseLabel_en-US" xlink:label="lab_stpr_NV_D9E32D64DA954FB4B98583F6FE8F2201" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> NEVADA </link:label>

<link:label id="lab_stpr_NV_D9E32D64DA954FB4B98583F6FE8F2201_label_en-US" xlink:label="lab_stpr_NV_D9E32D64DA954FB4B98583F6FE8F2201" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> NEVADA </link:label>

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<link:label id="lab_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC_terseLabel_en-US" xlink:label="lab_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> CALIFORNIA </link:label>

<link:label id="lab_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC_label_en-US" xlink:label="lab_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Southern California [Member] </link:label>

<link:label id="lab_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC_documentation_en-US" xlink:label="lab_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Southern California [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_SouthernCaliforniaMember" xlink:label="loc_wal_SouthernCaliforniaMember_8DA4D2EC8311A7A68BB783F6FE8F5DFC" xlink:type="locator"/>

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<link:label id="lab_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B_terseLabel_en-US" xlink:label="lab_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> HOA Services [Member] </link:label>

<link:label id="lab_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B_label_en-US" xlink:label="lab_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> HOA Services [Member] </link:label>

<link:label id="lab_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B_documentation_en-US" xlink:label="lab_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> HOA Services [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_HOAServicesMember" xlink:label="loc_wal_HOAServicesMember_0FD059D277B35C3518E583F6FE8F0C8B" xlink:type="locator"/>

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<link:label id="lab_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D_terseLabel_en-US" xlink:label="lab_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other National Business Lines [Member] </link:label>

<link:label id="lab_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D_label_en-US" xlink:label="lab_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other National Business Lines [Member] </link:label>

<link:label id="lab_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D_documentation_en-US" xlink:label="lab_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other National Business Lines [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_OtherNationalBusinessLinesMember" xlink:label="loc_wal_OtherNationalBusinessLinesMember_76E2FD608DB377A2412083F6FE8F112D" xlink:type="locator"/>

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<link:label id="lab_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5_terseLabel_en-US" xlink:label="lab_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Public and Non-Profit Finance [Member] </link:label>

<link:label id="lab_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5_label_en-US" xlink:label="lab_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Public and Non-Profit Finance [Member] </link:label>

<link:label id="lab_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5_documentation_en-US" xlink:label="lab_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Public and Non-Profit Finance [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_PublicandNonProfitFinanceMember" xlink:label="loc_wal_PublicandNonProfitFinanceMember_D1D360064ECF6577104983F6FE8F4EB5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_9F1C5E713B897F3015EF83F6FE8F41D9_verboseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_9F1C5E713B897F3015EF83F6FE8F41D9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Operating Statistics [Line Items] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_9F1C5E713B897F3015EF83F6FE8F41D9" xlink:type="locator"/>

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<link:label id="lab_us-gaap_Assets_64DAF33B516883B2CFE983F6FE8FA627_terseLabel_en-US" xlink:label="lab_us-gaap_Assets_64DAF33B516883B2CFE983F6FE8FA627" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_64DAF33B516883B2CFE983F6FE8FA627" xlink:type="locator"/>

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<link:label id="lab_wal_CashCashEquivalentsandInvestmentSecurities_07CF45698DB0B8DED11083F6FE8F78B1_terseLabel_en-US" xlink:label="lab_wal_CashCashEquivalentsandInvestmentSecurities_07CF45698DB0B8DED11083F6FE8F78B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents and Investment Securities </link:label>

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<link:label id="lab_wal_CashCashEquivalentsandInvestmentSecurities_07CF45698DB0B8DED11083F6FE8F78B1_documentation_en-US" xlink:label="lab_wal_CashCashEquivalentsandInvestmentSecurities_07CF45698DB0B8DED11083F6FE8F78B1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents and Investment Securities </link:label>

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<link:label id="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_6A418CB0E1D800AE8EC78402DD6943FD_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableNetReportedAmount_6A418CB0E1D800AE8EC78402DD6943FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Net Amount </link:label>

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<link:label id="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F_terseLabel_en-US" xlink:label="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Including Held for Sale, Net </link:label>

<link:label id="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F_label_en-US" xlink:label="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable Including Held for Sale, Net </link:label>

<link:label id="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F_documentation_en-US" xlink:label="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Loans and leases receivable including loans held for sale, net of deferred fees and costs and the allowance for credit losses. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_LoansandLeasesReceivableIncludingHeldforSaleNet" xlink:label="loc_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F" xlink:to="lab_wal_LoansandLeasesReceivableIncludingHeldforSaleNet_6EB1AE2139BBBFE4733283F6FE8FF92F" xlink:type="arc"/>

<link:label id="lab_us-gaap_IntangibleAssetsNetIncludingGoodwill_71046A44403CB50FE9F783F6FE8F3B18_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetIncludingGoodwill_71046A44403CB50FE9F783F6FE8F3B18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible Assets, Net (Including Goodwill) </link:label>

<link:label id="lab_us-gaap_IntangibleAssetsNetIncludingGoodwill_71046A44403CB50FE9F783F6FE8F3B18_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetIncludingGoodwill_71046A44403CB50FE9F783F6FE8F3B18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intangible Assets, Net (Including Goodwill) </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_71046A44403CB50FE9F783F6FE8F3B18" xlink:type="locator"/>

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<link:label id="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE_terseLabel_en-US" xlink:label="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Assets Segment </link:label>

<link:label id="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE_label_en-US" xlink:label="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets Segment </link:label>

<link:label id="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE_documentation_en-US" xlink:label="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other Assets Segment </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_OtherAssetsSegment" xlink:label="loc_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE" xlink:to="lab_wal_OtherAssetsSegment_19FF188004947565565F83F6FE8FE1AE" xlink:type="arc"/>

<link:label id="lab_us-gaap_StockholdersEquity_19AB58808CB569D45B9883F6FE8F075C_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_19AB58808CB569D45B9883F6FE8F075C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total stockholders’ equity </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_19AB58808CB569D45B9883F6FE8F075C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestIncomeExpenseNet_F0F717EE8A05FF98919383F6FE8F783C_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_F0F717EE8A05FF98919383F6FE8F783C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net interest income </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_F0F717EE8A05FF98919383F6FE8F783C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProvisionForLoanLeaseAndOtherLosses_1458CCCFBA146F6BBF3483F6FE9F2D4C_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForLoanLeaseAndOtherLosses_1458CCCFBA146F6BBF3483F6FE9F2D4C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Provision for Loan, Lease, and Other Losses </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_1458CCCFBA146F6BBF3483F6FE9F2D4C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_ECE9C7EA5B1A6B8E0CB883F6FE9F3C65_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_ECE9C7EA5B1A6B8E0CB883F6FE9F3C65" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net interest income (loss) after provision for credit losses </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_ECE9C7EA5B1A6B8E0CB883F6FE9F3C65" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_ECE9C7EA5B1A6B8E0CB883F6FE9F3C65" xlink:to="lab_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_ECE9C7EA5B1A6B8E0CB883F6FE9F3C65" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_7D02B3A13F103BD50B9383F6FE9F6226_positiveLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_7D02B3A13F103BD50B9383F6FE9F6226" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:type="resource" xml:lang="en-US"> Income from continuing operations before income taxes </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_7D02B3A13F103BD50B9383F6FE9F6226" xlink:type="locator"/>

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<link:label id="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A_terseLabel_en-US" xlink:label="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other liabilities </link:label>

<link:label id="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A_label_en-US" xlink:label="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Liabilities Segment </link:label>

<link:label id="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A_documentation_en-US" xlink:label="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other Liabilities Segment </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_OtherLiabilitiesSegment" xlink:label="loc_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A" xlink:to="lab_wal_OtherLiabilitiesSegment_02EC58EB924BDB942D1283F6FE9F339A" xlink:type="arc"/>

<link:label id="lab_us-gaap_Liabilities_6BEEE0301B7C349E32E983F6FE9F29B4_terseLabel_en-US" xlink:label="lab_us-gaap_Liabilities_6BEEE0301B7C349E32E983F6FE9F29B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_6BEEE0301B7C349E32E983F6FE9F29B4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_6BEEE0301B7C349E32E983F6FE9F29B4" xlink:to="lab_us-gaap_Liabilities_6BEEE0301B7C349E32E983F6FE9F29B4" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_01E4EF6146586ADA957683F6FE9FC073_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_01E4EF6146586ADA957683F6FE9FC073" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01E4EF6146586ADA957683F6FE9FC073" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01E4EF6146586ADA957683F6FE9FC073" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_01E4EF6146586ADA957683F6FE9FC073" xlink:type="arc"/>

<link:label id="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB_terseLabel_en-US" xlink:label="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Excess Funds Provided by (Used in) Segment Basis </link:label>

<link:label id="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB_label_en-US" xlink:label="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Excess Funds Provided by (Used in) Segment Basis </link:label>

<link:label id="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB_documentation_en-US" xlink:label="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Excess Funds Provided by (Used in) Segment Basis </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_ExcessFundsProvidedbyUsedinSegmentBasis" xlink:label="loc_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB" xlink:to="lab_wal_ExcessFundsProvidedbyUsedinSegmentBasis_DE2D0EFBDC9ADF709F4F83F6FE9FD3BB" xlink:type="arc"/>

<link:label id="lab_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E_terseLabel_en-US" xlink:label="lab_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other borrowings </link:label>

<link:label id="lab_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E_label_en-US" xlink:label="lab_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Borrowings and Qualifying Debt </link:label>

<link:label id="lab_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E_documentation_en-US" xlink:label="lab_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Total borrowings and qualifying debt. </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_BorrowingsandQualifyingDebt" xlink:label="loc_wal_BorrowingsandQualifyingDebt_7C7C2DDBBB2258C8A69F83F6FE9F5F1E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income </link:label>

<link:label id="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss) Note [Text Block] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNoteTextBlock" xlink:label="loc_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7" xlink:to="lab_us-gaap_ComprehensiveIncomeNoteTextBlock_9EADA618694ADDA54082F2487CF0ECC7" xlink:type="arc"/>

<link:label id="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_841CCE8ED4C8C9381E78F248799E9353_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_841CCE8ED4C8C9381E78F248799E9353" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Letters of credit expiration period </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_841CCE8ED4C8C9381E78F248799E9353_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_841CCE8ED4C8C9381E78F248799E9353" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Expiration Period </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationPeriod" xlink:label="loc_us-gaap_LineOfCreditFacilityExpirationPeriod_841CCE8ED4C8C9381E78F248799E9353" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_568A58C6644A4EDED40AF248799E1B8E_verboseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_568A58C6644A4EDED40AF248799E1B8E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Percent of commercial real estate related loans </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_568A58C6644A4EDED40AF248799E1B8E" xlink:type="locator"/>

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<link:label id="lab_wal_MaximumLoanToValueRatio_DB10D6787F541C377D46F248799E9724_terseLabel_en-US" xlink:label="lab_wal_MaximumLoanToValueRatio_DB10D6787F541C377D46F248799E9724" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of first liens initial loan to value ratio </link:label>

<link:label id="lab_wal_MaximumLoanToValueRatio_DB10D6787F541C377D46F248799E9724_label_en-US" xlink:label="lab_wal_MaximumLoanToValueRatio_DB10D6787F541C377D46F248799E9724" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Maximum Loan To Value Ratio </link:label>

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<link:label id="lab_us-gaap_DerivativeInstrumentsGainLossLineItems_804869A741A25CEC375DF2487689A08F_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeInstrumentsGainLossLineItems_804869A741A25CEC375DF2487689A08F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative Instruments, Gain (Loss) [Line Items] </link:label>

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<link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_D08A06CD5ED93530EE78F2487737C2FE_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_D08A06CD5ED93530EE78F2487737C2FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Company's Borrowings </link:label>

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<link:label id="lab_wal_QualifyingDebtDisclosureAbstract_F7C93899023545E6270FF2487D0C6CEC_label_en-US" xlink:label="lab_wal_QualifyingDebtDisclosureAbstract_F7C93899023545E6270FF2487D0C6CEC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Qualifying Debt Disclosure [Abstract] </link:label>

<link:label id="lab_wal_QualifyingDebtDisclosureAbstract_F7C93899023545E6270FF2487D0C6CEC_documentation_en-US" xlink:label="lab_wal_QualifyingDebtDisclosureAbstract_F7C93899023545E6270FF2487D0C6CEC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Qualifying Debt Disclosure [Abstract] </link:label>

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<link:label id="lab_us-gaap_SubordinatedBorrowingsDisclosureTextBlock_74176B36697E29D996C8F2487D0C120C_terseLabel_en-US" xlink:label="lab_us-gaap_SubordinatedBorrowingsDisclosureTextBlock_74176B36697E29D996C8F2487D0C120C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subordinated Borrowings Disclosure [Text Block] </link:label>

<link:label id="lab_us-gaap_SubordinatedBorrowingsDisclosureTextBlock_74176B36697E29D996C8F2487D0C120C_label_en-US" xlink:label="lab_us-gaap_SubordinatedBorrowingsDisclosureTextBlock_74176B36697E29D996C8F2487D0C120C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subordinated Borrowings Disclosure [Text Block] </link:label>

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<link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_484D8223965160D423E7F2487AF28D5F_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_484D8223965160D423E7F2487AF28D5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Parent Company Financial Information </link:label>

<link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_484D8223965160D423E7F2487AF28D5F_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_484D8223965160D423E7F2487AF28D5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Financial Information of Parent Company Only Disclosure [Text Block] </link:label>

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<link:label id="lab_wal_DebtTable_3556EB512AEF705EDDF688CD0E7BBD1D_terseLabel_en-US" xlink:label="lab_wal_DebtTable_3556EB512AEF705EDDF688CD0E7BBD1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt [Table] </link:label>

<link:label id="lab_wal_DebtTable_3556EB512AEF705EDDF688CD0E7BBD1D_label_en-US" xlink:label="lab_wal_DebtTable_3556EB512AEF705EDDF688CD0E7BBD1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt [Table] </link:label>

<link:label id="lab_wal_DebtTable_3556EB512AEF705EDDF688CD0E7BBD1D_documentation_en-US" xlink:label="lab_wal_DebtTable_3556EB512AEF705EDDF688CD0E7BBD1D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt [Table] </link:label>

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<link:label id="lab_us-gaap_CreditFacilityAxis_8228499705317A2A578988CD0E7C9316_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_8228499705317A2A578988CD0E7C9316" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Facility [Axis] </link:label>

<link:label id="lab_us-gaap_CreditFacilityAxis_8228499705317A2A578988CD0E7C9316_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_8228499705317A2A578988CD0E7C9316" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Facility [Axis] </link:label>

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<link:label id="lab_us-gaap_CreditFacilityDomain_E0C478F109467611C9C888CD0E7D8A35_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_E0C478F109467611C9C888CD0E7D8A35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Facility [Domain] </link:label>

<link:label id="lab_us-gaap_CreditFacilityDomain_E0C478F109467611C9C888CD0E7D8A35_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_E0C478F109467611C9C888CD0E7D8A35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Facility [Domain] </link:label>

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<link:label id="lab_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3_terseLabel_en-US" xlink:label="lab_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unsecured Credit Facility [Member] </link:label>

<link:label id="lab_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3_label_en-US" xlink:label="lab_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unsecured Credit Facility [Member] </link:label>

<link:label id="lab_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3_documentation_en-US" xlink:label="lab_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unsecured Credit Facility [Member] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_UnsecuredCreditFacilityMember" xlink:label="loc_wal_UnsecuredCreditFacilityMember_E63951D18BB618D9690F88CD0E7DE1B3" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FederalReserveBankAdvancesMember_C98E47A73C9A999F737188CD0E7E20AD_terseLabel_en-US" xlink:label="lab_us-gaap_FederalReserveBankAdvancesMember_C98E47A73C9A999F737188CD0E7E20AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> FRB [Member] </link:label>

<link:label id="lab_us-gaap_FederalReserveBankAdvancesMember_C98E47A73C9A999F737188CD0E7E20AD_label_en-US" xlink:label="lab_us-gaap_FederalReserveBankAdvancesMember_C98E47A73C9A999F737188CD0E7E20AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Federal Reserve Bank Advances [Member] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalReserveBankAdvancesMember" xlink:label="loc_us-gaap_FederalReserveBankAdvancesMember_C98E47A73C9A999F737188CD0E7E20AD" xlink:type="locator"/>

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<link:label id="lab_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398_terseLabel_en-US" xlink:label="lab_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt [Line Items] </link:label>

<link:label id="lab_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398_label_en-US" xlink:label="lab_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt [Line Items] </link:label>

<link:label id="lab_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398_documentation_en-US" xlink:label="lab_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt [Line Items] </link:label>

<link:loc xlink:href="wal-20191231.xsd#wal_DebtLineItems" xlink:label="loc_wal_DebtLineItems_2E952D5A0974B219758788CD0E7FC398" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear_C06C218AC84BDBA79FFB88CD0E7F5872_terseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear_C06C218AC84BDBA79FFB88CD0E7F5872" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average interest rate of FHLB and FRB Short-term advances </link:label>

<link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear_C06C218AC84BDBA79FFB88CD0E7F5872_label_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear_C06C218AC84BDBA79FFB88CD0E7F5872" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year </link:label>

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<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7A31C340CF401583199E88CD0E7FBC4C_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7A31C340CF401583199E88CD0E7FBC4C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Secured borrowing credit line </link:label>

<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7A31C340CF401583199E88CD0E7FBC4C_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7A31C340CF401583199E88CD0E7FBC4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Maximum Borrowing Capacity </link:label>

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<link:label id="lab_us-gaap_ValuationAllowanceTable_D032227305ABAF45330C1BDC277A3326_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationAllowanceTable_D032227305ABAF45330C1BDC277A3326" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Valuation Allowance [Table] </link:label>

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<link:label id="lab_us-gaap_ValuationAllowanceLineItems_2D65D7835B95278354101BDC277A5C8A_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationAllowanceLineItems_2D65D7835B95278354101BDC277A5C8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Valuation Allowance [Line Items] </link:label>

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<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLosses_197BAC64306B6E67EEB81BDC277A1C0A_periodStartLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLosses_197BAC64306B6E67EEB81BDC277A1C0A" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning Balance </link:label>

<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLosses_197BAC64306B6E67EEB81BDC277A1C0A_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLosses_197BAC64306B6E67EEB81BDC277A1C0A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Loss </link:label>

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<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_632B67371D59067B148D1BDC277A637E_label_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_632B67371D59067B148D1BDC277A637E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Receivable, Allowance for Credit Loss, Recovery </link:label>

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<link:label id="lab_us-gaap_FinancingReceivableAllowanceForCreditLosses_C82E25ABE0DFF0CE7C821BDC277AC418_periodEndLabel_en-US" xlink:label="lab_us-gaap_FinancingReceivableAllowanceForCreditLosses_C82E25ABE0DFF0CE7C821BDC277AC418" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_C82E25ABE0DFF0CE7C821BDC277AC418" xlink:type="locator"/>

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11 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/23/23  Western Alliance Bancorporation   10-K       12/31/22  128:29M
 2/28/22  Western Alliance Bancorporation   424B5                  2:464K                                   Donnelley … Solutions/FA
 2/25/22  Western Alliance Bancorporation   10-K       12/31/21  130:28M
 9/16/21  Western Alliance Bancorporation   424B5                  1:656K                                   Donnelley … Solutions/FA
 9/15/21  Western Alliance Bancorporation   424B5                  1:663K                                   Donnelley … Solutions/FA
 6/04/21  Western Alliance Bancorporation   424B5                  1:692K                                   Donnelley … Solutions/FA
 6/03/21  Western Alliance Bancorporation   424B5                  1:482K                                   Donnelley … Solutions/FA
 6/03/21  Western Alliance Bancorporation   424B5                  1:693K                                   Donnelley … Solutions/FA
 5/14/21  Western Alliance Bancorporation   S-3ASR      5/14/21    4:464K                                   Donnelley … Solutions/FA
 3/01/21  Western Alliance Bancorporation   424B5                  1:405K                                   Donnelley … Solutions/FA
 2/25/21  Western Alliance Bancorporation   10-K       12/31/20  136:27M

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