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Westinghouse Air Brake Technologies Corp – ‘10-Q’ for 9/30/19 – ‘EX-101.LAB’

On:  Friday, 11/1/19, at 12:05pm ET   ·   For:  9/30/19   ·   Accession #:  1628280-19-13038   ·   File #:  33-90866

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

11/01/19  Westinghouse Air Brake Techs Corp 10-Q        9/30/19   96:13M                                    Workiva Inc Wde… FA01/FA

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

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.80M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     32K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     32K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     29K 
38: R1          Cover Page                                          HTML     83K 
84: R2          Condensed Consolidated Balance Sheets               HTML    151K 
56: R3          Condensed Consolidated Balance Sheets               HTML     51K 
                (Parenthetical)                                                  
24: R4          Condensed Consolidated Statements of Income         HTML    108K 
39: R5          Condensed Consolidated Statements of Comprehensive  HTML     57K 
                Income                                                           
87: R6          Condensed Consolidated Statements of Cash Flows     HTML    103K 
57: R7          Consolidated Statements of Shareholders' Equity     HTML     86K 
25: R8          Consolidated Statements of Shareholders' Equity     HTML     29K 
                (Parenthetical)                                                  
36: R9          Business                                            HTML     30K 
31: R10         Accounting Policies                                 HTML    148K 
44: R11         Acquisitions                                        HTML     99K 
92: R12         Inventories                                         HTML     36K 
63: R13         Intangibles                                         HTML     58K 
30: R14         Contract Assets and Contract Liabilities            HTML     46K 
43: R15         Leases                                              HTML    109K 
91: R16         Long-Term Debt                                      HTML     76K 
62: R17         Stock-Based Compensation                            HTML     81K 
29: R18         Income Taxes                                        HTML     33K 
45: R19         Earnings Per Share                                  HTML     99K 
77: R20         Warranties                                          HTML     39K 
70: R21         Derivative Financial Instruments and Hedging        HTML     64K 
12: R22         Fair Value Measurement and Fair Value of Financial  HTML     55K 
                Instruments                                                      
47: R23         Commitments and Contingencies                       HTML     41K 
76: R24         Segment Information                                 HTML    147K 
69: R25         Guarantor Subsidiaries Financial Information        HTML    459K 
11: R26         Other Income (Expense), Net                         HTML     47K 
46: R27         Accounting Policies (Policies)                      HTML     77K 
78: R28         Accounting Policies (Tables)                        HTML    123K 
68: R29         Acquisitions (Tables)                               HTML     77K 
65: R30         Inventories (Tables)                                HTML     37K 
95: R31         Intangibles (Tables)                                HTML     61K 
41: R32         Contract Assets and Contract Liabilities (Tables)   HTML     44K 
27: R33         Leases (Tables)                                     HTML     90K 
66: R34         Long-Term Debt (Tables)                             HTML     48K 
96: R35         Stock-Based Compensation (Tables)                   HTML     77K 
42: R36         Earnings Per Share (Tables)                         HTML     99K 
28: R37         Warranties (Tables)                                 HTML     39K 
67: R38         Derivative Financial Instruments and Hedging        HTML     59K 
                (Tables)                                                         
94: R39         Fair Value Measurement and Fair Value of Financial  HTML     49K 
                Instruments (Tables)                                             
71: R40         Segment Information (Tables)                        HTML    148K 
80: R41         Guarantor Subsidiaries Financial Information        HTML    461K 
                (Tables)                                                         
51: R42         Other Income (Expense), Net (Tables)                HTML     46K 
16: R43         Business (Detail)                                   HTML     39K 
72: R44         Accounting Policies - Additional Information        HTML     39K 
                (Detail)                                                         
81: R45         Accounting Policies - Remaining Performance         HTML     34K 
                Obligations (Details)                                            
52: R46         Accounting Policies - Accumulated Other             HTML     57K 
                Comprehensive Loss by Component, Net of Tax                      
                (Details)                                                        
17: R47         Accounting Policies - Reclassifications Out of      HTML     54K 
                Accumulated Other Comprehensive Loss (Detail)                    
73: R48         Acquisitions - General Electric Transportation      HTML    114K 
                (Details)                                                        
79: R49         Acquisitions - Summary of Preliminary Estimated     HTML     81K 
                Fair Values of GET Assets Acquired and Liabilities               
                Assumed (Details)                                                
86: R50         Acquisitions - Additional Information (Details)     HTML     70K 
58: R51         Acquisitions - Summary of Preliminary Estimated     HTML     47K 
                Fair Values of Assets Acquired and Liabilities                   
                Assumed (Detail)                                                 
23: R52         Acquisitions - Pro Forma Financial Information      HTML     43K 
                (Detail)                                                         
40: R53         Inventories (Details)                               HTML     38K 
85: R54         Intangibles - Change in the Carrying Amount of      HTML     40K 
                Goodwill by Segment (Detail)                                     
55: R55         Intangibles - Additional Information (Detail)       HTML     49K 
22: R56         Intangibles - Intangible Assets Other Than          HTML     38K 
                Goodwill and Trade Names (Detail)                                
37: R57         Intangibles - Amortization Expense (Detail)         HTML     38K 
88: R58         Contract Assets and Contract Liabilities (Details)  HTML     54K 
53: R59         Leases - Narrative (Details)                        HTML     31K 
15: R60         Leases - Lease Expense (Details)                    HTML     38K 
49: R61         Leases - Maturity of Lease Liabilities (Details)    HTML     84K 
83: R62         Leases - Lease Term and Discount Rate (Details)     HTML     38K 
75: R63         Long-Term Debt - Schedule of Long-term Debt         HTML     66K 
                (Details)                                                        
14: R64         Long-Term Debt - Additional Information (Details)   HTML    164K 
48: R65         Stock-Based Compensation - Additional Information   HTML     69K 
                (Detail)                                                         
82: R66         Stock-Based Compensation - Stock Option Activity    HTML     77K 
                (Detail)                                                         
74: R67         Stock-Based Compensation - Fair Value of Each       HTML     37K 
                Option Grant Weighted Average Assumptions (Detail)               
13: R68         Stock-Based Compensation - Restricted Stock         HTML     61K 
                Activity and Incentive Stock Awards Activity                     
                (Detail)                                                         
50: R69         Income Taxes (Detail)                               HTML     38K 
33: R70         Earnings Per Share (Detail)                         HTML     82K 
18: R71         Warranties (Detail)                                 HTML     39K 
59: R72         Derivative Financial Instruments and Hedging -      HTML     42K 
                Additional Information (Details)                                 
89: R73         Derivative Financial Instruments and Hedging -      HTML     52K 
                Summary of Notional Amounts and Fair Value                       
                (Details)                                                        
35: R74         Fair Value Measurement and Fair Value of Financial  HTML     54K 
                Instruments (Detail)                                             
20: R75         Commitments and Contingencies (Details)             HTML     44K 
61: R76         Segment Information - Additional Information        HTML     27K 
                (Detail)                                                         
90: R77         Segment Information - Segment Financial             HTML     55K 
                Information (Detail)                                             
32: R78         Segment Information - Sales by Product (Detail)     HTML     41K 
21: R79         Guarantor Subsidiaries Financial Information -      HTML    142K 
                Balance Sheet (Details)                                          
34: R80         Guarantor Subsidiaries Financial Information -      HTML    102K 
                Income Statement (Details)                                       
19: R81         Guarantor Subsidiaries Financial Information -      HTML     65K 
                Cash Flows (Details)                                             
60: R82         Other Income (Expense), Net (Detail)                HTML     41K 
26: XML         IDEA XML File -- Filing Summary                      XML    177K 
93: XML         XBRL Instance -- wab-20190930x10q_htm                XML   4.18M 
64: EXCEL       IDEA Workbook of Financial Reports                  XLSX    117K 
 6: EX-101.CAL  XBRL Calculations -- wab-20190930_cal                XML    323K 
 7: EX-101.DEF  XBRL Definitions -- wab-20190930_def                 XML    826K 
 8: EX-101.LAB  XBRL Labels -- wab-20190930_lab                      XML   2.04M 
 9: EX-101.PRE  XBRL Presentations -- wab-20190930_pre               XML   1.27M 
 5: EX-101.SCH  XBRL Schema -- wab-20190930                          XSD    197K 
54: JSON        XBRL Instance as JSON Data -- MetaLinks              439±   651K 
10: ZIP         XBRL Zipped Folder -- 0001628280-19-013038-xbrl      Zip    362K

‘EX-101.LAB’   —   XBRL Labels — wab-20190930_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
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<link:label id="lab_us-gaap_EarningsPerShareAbstract_E18D585BB1B72B1E2AA6DD32DB26F050_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_072E436C66F759BFB89AF1E1051700FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share [Abstract] </link:label>
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<link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_4E21703B64C6ED5B803DDD32DB266560_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_40DBB5DD3D5F58A79B466CAD993B5444" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Computation of Basic and Diluted Earnings Per Share </link:label>
<link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_4E21703B64C6ED5B803DDD32DB266560_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_40DBB5DD3D5F58A79B466CAD993B5444" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Earnings Per Share, Basic and Diluted [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_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_40DBB5DD3D5F58A79B466CAD993B5444" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_76CE27059CC6554889742305DECB34D9_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_76CE27059CC6554889742305DECB34D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_76CE27059CC6554889742305DECB34D9_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_76CE27059CC6554889742305DECB34D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_76CE27059CC6554889742305DECB34D9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PlanNameAxis_81009657F64E909993782305DECCDCBA_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_81009657F64E909993782305DECCDCBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name </link:label>
<link:label id="lab_us-gaap_PlanNameAxis_81009657F64E909993782305DECCDCBA_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_81009657F64E909993782305DECCDCBA" 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_81009657F64E909993782305DECCDCBA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PlanNameDomain_30EC971569C2E63BA1992305DECCCDC6_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_30EC971569C2E63BA1992305DECCCDC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name </link:label>
<link:label id="lab_us-gaap_PlanNameDomain_30EC971569C2E63BA1992305DECCCDC6_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_30EC971569C2E63BA1992305DECCCDC6" 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_30EC971569C2E63BA1992305DECCCDC6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_30EC971569C2E63BA1992305DECCCDC6" xlink:to="lab_us-gaap_PlanNameDomain_30EC971569C2E63BA1992305DECCCDC6" xlink:type="arc"/>
<link:label id="lab_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492_terseLabel_en-US" xlink:label="lab_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2011 Plan </link:label>
<link:label id="lab_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492_label_en-US" xlink:label="lab_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Two Thousand Eleven [Member] </link:label>
<link:label id="lab_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492_documentation_en-US" xlink:label="lab_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Plan two thousand eleven. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_PlanTwoThousandElevenMember" xlink:label="loc_wab_PlanTwoThousandElevenMember_4133D771BEF838653D782305DECCF492" xlink:type="locator"/>
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<link:label id="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD_terseLabel_en-US" xlink:label="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Directors Plan </link:label>
<link:label id="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD_label_en-US" xlink:label="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Employee Directors’ Fee and Stock Option Plan [Member] </link:label>
<link:label id="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD_documentation_en-US" xlink:label="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Non-Employee Directors’ Fee and Stock Option Plan [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_NonEmployeeDirectorsFeeandStockOptionPlanMember" xlink:label="loc_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD" xlink:to="lab_wab_NonEmployeeDirectorsFeeandStockOptionPlanMember_1D6E29DC682C36B146892305DECC2EDD" xlink:type="arc"/>
<link:label id="lab_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645_terseLabel_en-US" xlink:label="lab_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2000 Plan </link:label>
<link:label id="lab_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645_label_en-US" xlink:label="lab_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Two Thousand [Member] </link:label>
<link:label id="lab_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645_documentation_en-US" xlink:label="lab_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Plan two thousand. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_PlanTwoThousandMember" xlink:label="loc_wab_PlanTwoThousandMember_4EB7F0329EBA7C1FEB032305DECD2645" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AwardTypeAxis_C1148D0A96D5BC4D811E2305DECDF794_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_C1148D0A96D5BC4D811E2305DECDF794" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type </link:label>
<link:label id="lab_us-gaap_AwardTypeAxis_C1148D0A96D5BC4D811E2305DECDF794_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_C1148D0A96D5BC4D811E2305DECDF794" 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_C1148D0A96D5BC4D811E2305DECDF794" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7661D32D697873D2C1812305DECD6B33_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7661D32D697873D2C1812305DECD6B33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7661D32D697873D2C1812305DECD6B33_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7661D32D697873D2C1812305DECD6B33" 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_7661D32D697873D2C1812305DECD6B33" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EmployeeStockOptionMember_39C367EAB328CB7575742305DECD25C9_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_39C367EAB328CB7575742305DECD25C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Option </link:label>
<link:label id="lab_us-gaap_EmployeeStockOptionMember_39C367EAB328CB7575742305DECD25C9_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_39C367EAB328CB7575742305DECD25C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Option [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_39C367EAB328CB7575742305DECD25C9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RestrictedStockMember_BBF20192580B3FB614C02305DECD9553_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_BBF20192580B3FB614C02305DECD9553" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Stock </link:label>
<link:label id="lab_us-gaap_RestrictedStockMember_BBF20192580B3FB614C02305DECD9553_label_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_BBF20192580B3FB614C02305DECD9553" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Stock [Member] </link:label>
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<link:label id="lab_us-gaap_PerformanceSharesMember_61B9E93DB49B94F7CDE72305DECD33FD_terseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_61B9E93DB49B94F7CDE72305DECD33FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Performance Shares </link:label>
<link:label id="lab_us-gaap_PerformanceSharesMember_61B9E93DB49B94F7CDE72305DECD33FD_label_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_61B9E93DB49B94F7CDE72305DECD33FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Performance Shares [Member] </link:label>
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<link:label id="lab_srt_RangeMember_BC82AB30C52E820F9A392305DECEAA09_label_en-US" xlink:label="lab_srt_RangeMember_BC82AB30C52E820F9A392305DECEAA09" 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_srt_MinimumMember_311BC7A363AB201EDEBC2305DECEF3A2_terseLabel_en-US" xlink:label="lab_srt_MinimumMember_311BC7A363AB201EDEBC2305DECEF3A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Minimum </link:label>
<link:label id="lab_srt_MinimumMember_311BC7A363AB201EDEBC2305DECEF3A2_label_en-US" xlink:label="lab_srt_MinimumMember_311BC7A363AB201EDEBC2305DECEF3A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Minimum [Member] </link:label>
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<link:label id="lab_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE_terseLabel_en-US" xlink:label="lab_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maximum </link:label>
<link:label id="lab_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE_label_en-US" xlink:label="lab_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Maximum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE" xlink:to="lab_srt_MaximumMember_1EE1A0FADA7BBB05D6352305DECE4CEE" xlink:type="arc"/>
<link:label id="lab_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23_terseLabel_en-US" xlink:label="lab_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Scenario [Axis] </link:label>
<link:label id="lab_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23_label_en-US" xlink:label="lab_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Scenario [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23" xlink:to="lab_srt_StatementScenarioAxis_356D327F7C25561BD30E2305DECEDC23" xlink:type="arc"/>
<link:label id="lab_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD_terseLabel_en-US" xlink:label="lab_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Scenario [Domain] </link:label>
<link:label id="lab_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD_label_en-US" xlink:label="lab_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Scenario [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="loc_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD" xlink:to="lab_srt_ScenarioUnspecifiedDomain_96950C3F2A236BD5CB4B2305DECF0ABD" xlink:type="arc"/>
<link:label id="lab_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64_terseLabel_en-US" xlink:label="lab_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Scenario Forecast </link:label>
<link:label id="lab_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64_label_en-US" xlink:label="lab_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Forecast [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioForecastMember" xlink:label="loc_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64" xlink:to="lab_srt_ScenarioForecastMember_40FF44A7417DFD1AAA552305DECFCA64" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763" 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 [Line Items] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763" 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 [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_C3A1B1D7D7F4335595ED2305DECF0763" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9F4495D593A25DA3D8D82305DECFEBAF_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9F4495D593A25DA3D8D82305DECFEBAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of shares available for grant (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9F4495D593A25DA3D8D82305DECFEBAF_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9F4495D593A25DA3D8D82305DECFEBAF" 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_9F4495D593A25DA3D8D82305DECFEBAF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9F4495D593A25DA3D8D82305DECFEBAF" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9F4495D593A25DA3D8D82305DECFEBAF" xlink:type="arc"/>
<link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_5A09D479DD36345909B82305DED0B150_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_5A09D479DD36345909B82305DED0B150" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation expense </link:label>
<link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_5A09D479DD36345909B82305DED0B150_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_5A09D479DD36345909B82305DED0B150" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_5A09D479DD36345909B82305DED0B150" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2230D64B62D39D564D072305DED0DB07_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2230D64B62D39D564D072305DED0DB07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unamortized compensation expense expected to be vested </link:label>
<link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2230D64B62D39D564D072305DED0DB07_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2230D64B62D39D564D072305DED0DB07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Nonvested Award, 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_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2230D64B62D39D564D072305DED0DB07" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_84707950C7DFD8DCD6192305DED085C2_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_84707950C7DFD8DCD6192305DED085C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan term (in years) </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_84707950C7DFD8DCD6192305DED085C2_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_84707950C7DFD8DCD6192305DED085C2" 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, Expiration Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_84707950C7DFD8DCD6192305DED085C2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_113F72865D181394454B2305DED086AB_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_113F72865D181394454B2305DED086AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award vesting period (in years) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_113F72865D181394454B2305DED086AB_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_113F72865D181394454B2305DED086AB" 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, Award Vesting Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_113F72865D181394454B2305DED086AB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_C1A3A982B9ED520645682305DED09E38_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_C1A3A982B9ED520645682305DED09E38" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of incentive stock awards expected to be vested and awarded of stocks granted (as a percent) </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_C1A3A982B9ED520645682305DED09E38_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_C1A3A982B9ED520645682305DED09E38" 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, Award Vesting Rights, Percentage </link:label>
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<link:label id="lab_us-gaap_DebtDisclosureAbstract_B734777861F688B2F004DD32DBB6F1A6_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_A0207E900CF95C5FBC8A1537CA39BD3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Abstract] </link:label>
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<link:label id="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_94E7F47A7453CAE28C97DD32DBB6E1B4_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock_D13846799F385358B08F14B7027F62D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-Term Debt </link:label>
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<link:label id="lab_us-gaap_LossContingenciesTable_BB29A32BBDD5C4CC3A47130DB6780E41_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_BB29A32BBDD5C4CC3A47130DB6780E41" 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_BB29A32BBDD5C4CC3A47130DB6780E41_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_BB29A32BBDD5C4CC3A47130DB6780E41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Table] </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_82A96CF1DA2EC7FF7FAFF868EDF8A827_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_82A96CF1DA2EC7FF7FAFF868EDF8A827" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C2F753E2BC87C88E926DF868EDF8AEC4_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C2F753E2BC87C88E926DF868EDF8AEC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_D0EF8ABAA0B9EFF6C679F868EDF8BA89_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_D0EF8ABAA0B9EFF6C679F868EDF8BA89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued income taxes </link:label>
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<link:label id="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED_terseLabel_en-US" xlink:label="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued liabilities and customer deposits </link:label>
<link:label id="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED_label_en-US" xlink:label="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase Decrease In Accrued Liabilities And Customer Deposits </link:label>
<link:label id="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED_documentation_en-US" xlink:label="lab_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Increase decrease in accrued liabilities and customer deposits. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits" xlink:label="loc_wab_IncreaseDecreaseInAccruedLiabilitiesAndCustomerDeposits_2F299ADF06D71FE7CA00F868EDF86BED" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_48F21F312CCE395CDCB4F868EDF84115_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_48F21F312CCE395CDCB4F868EDF84115" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Other assets and liabilities </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_48F21F312CCE395CDCB4F868EDF84115_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_48F21F312CCE395CDCB4F868EDF84115" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets and Liabilities, Net </link:label>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_48B9D9F47D7483F30E64F868EDF8F1EC_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_48B9D9F47D7483F30E64F868EDF8F1EC" 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_48B9D9F47D7483F30E64F868EDF8F1EC_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_48B9D9F47D7483F30E64F868EDF8F1EC" 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>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_48B9D9F47D7483F30E64F868EDF8F1EC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investing Activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_59F813950C07A6290784F868EDF8914A" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_72C93EC38972C92D7007F868EDF96B89_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_72C93EC38972C92D7007F868EDF96B89" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Purchase of property, plant and equipment </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_72C93EC38972C92D7007F868EDF96B89_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_72C93EC38972C92D7007F868EDF96B89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_72C93EC38972C92D7007F868EDF96B89" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9B27EBA298046F3C7E03F868EDF97250_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9B27EBA298046F3C7E03F868EDF97250" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from disposal of property, plant and equipment </link:label>
<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9B27EBA298046F3C7E03F868EDF97250_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9B27EBA298046F3C7E03F868EDF97250" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_9B27EBA298046F3C7E03F868EDF97250" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B04F9024A8AE1ED91483F868EDF96C5C_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B04F9024A8AE1ED91483F868EDF96C5C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions of businesses, net of cash acquired </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B04F9024A8AE1ED91483F868EDF96C5C_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B04F9024A8AE1ED91483F868EDF96C5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Businesses, Net of Cash Acquired </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B04F9024A8AE1ED91483F868EDF96C5C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_759AA6E6F6EC91E58690F868EDF900CF_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_759AA6E6F6EC91E58690F868EDF900CF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used for investing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_759AA6E6F6EC91E58690F868EDF900CF_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_759AA6E6F6EC91E58690F868EDF900CF" 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>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_0891644D729788AAD91FF868EDF9D300_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_0891644D729788AAD91FF868EDF9D300" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing Activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_0891644D729788AAD91FF868EDF9D300_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_0891644D729788AAD91FF868EDF9D300" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_0891644D729788AAD91FF868EDF9D300" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_507D01CA5161480EC4C9F868EDFA44B6_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_507D01CA5161480EC4C9F868EDFA44B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from debt </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_507D01CA5161480EC4C9F868EDFA44B6_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_507D01CA5161480EC4C9F868EDFA44B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Long-term Debt and Capital Securities, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_507D01CA5161480EC4C9F868EDFA44B6" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_48A0F52065D376307AE5F868EDFA5569_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_48A0F52065D376307AE5F868EDFA5569" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payments of debt </link:label>
<link:label id="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_48A0F52065D376307AE5F868EDFA5569_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities_48A0F52065D376307AE5F868EDFA5569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security </link:label>
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<link:label id="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A99744303440CC7EB697F868EDFA49A6_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A99744303440CC7EB697F868EDFA49A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from exercise of stock options and other benefit plans </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A99744303440CC7EB697F868EDFA49A6_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A99744303440CC7EB697F868EDFA49A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A99744303440CC7EB697F868EDFA49A6" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_3D4347ABE410C1662C86F868EDFA4EEF_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_3D4347ABE410C1662C86F868EDFA4EEF" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payment of income tax withholding on share-based compensation </link:label>
<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_3D4347ABE410C1662C86F868EDFA4EEF_label_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_3D4347ABE410C1662C86F868EDFA4EEF" 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_3D4347ABE410C1662C86F868EDFA4EEF" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_41F4BAA3225BFEF5A2D8F868EDFA669E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_41F4BAA3225BFEF5A2D8F868EDFA669E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Payment of contingent consideration on acquisitions </link:label>
<link:label id="lab_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_41F4BAA3225BFEF5A2D8F868EDFA669E_label_en-US" xlink:label="lab_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_41F4BAA3225BFEF5A2D8F868EDFA669E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payment for Contingent Consideration Liability, Financing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities" xlink:label="loc_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_41F4BAA3225BFEF5A2D8F868EDFA669E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_532AB9E89C4D66640B01F868EDFB61B4_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_532AB9E89C4D66640B01F868EDFB61B4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Cash dividends </link:label>
<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_532AB9E89C4D66640B01F868EDFB61B4_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_532AB9E89C4D66640B01F868EDFB61B4" 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_532AB9E89C4D66640B01F868EDFB61B4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_CA7798188DC1BC66B451F868EDFBA710_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_CA7798188DC1BC66B451F868EDFBA710" 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_CA7798188DC1BC66B451F868EDFBA710_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_CA7798188DC1BC66B451F868EDFBA710" 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_CA7798188DC1BC66B451F868EDFBA710" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_EE6B009791A7453610CAF868EDFB997E_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_EE6B009791A7453610CAF868EDFB997E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effect of changes in currency exchange rates </link:label>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_EE6B009791A7453610CAF868EDFB997E_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_EE6B009791A7453610CAF868EDFB997E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_EE6B009791A7453610CAF868EDFB997E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3A4B244912E0F18BECBBF868EDFBB2C9_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3A4B244912E0F18BECBBF868EDFBB2C9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> (Decrease) increase in cash </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3A4B244912E0F18BECBBF868EDFBB2C9_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3A4B244912E0F18BECBBF868EDFBB2C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3A4B244912E0F18BECBBF868EDFBB2C9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2FBA817B7BFD4D35F365F868EDFB4D1B_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2FBA817B7BFD4D35F365F868EDFB4D1B" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Cash, cash equivalents, and restricted cash, beginning of period </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2FBA817B7BFD4D35F365F868EDFB4D1B_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2FBA817B7BFD4D35F365F868EDFB4D1B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2FBA817B7BFD4D35F365F868EDFB4D1B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_577110CDE78B940B6718F868EDFB0386_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_577110CDE78B940B6718F868EDFB0386" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Cash, cash equivalents, and restricted cash, 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_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_577110CDE78B940B6718F868EDFB0386" xlink:type="locator"/>
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<link:label id="lab_wab_EarningsPerShareNumeratorActivityAbstract_5223413FD77406A3C4891D75EE901981_terseLabel_en-US" xlink:label="lab_wab_EarningsPerShareNumeratorActivityAbstract_5223413FD77406A3C4891D75EE901981" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Numerator </link:label>
<link:label id="lab_wab_EarningsPerShareNumeratorActivityAbstract_5223413FD77406A3C4891D75EE901981_label_en-US" xlink:label="lab_wab_EarningsPerShareNumeratorActivityAbstract_5223413FD77406A3C4891D75EE901981" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share Numerator Activity [Abstract] </link:label>
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<link:loc xlink:href="wab-20190930.xsd#wab_EarningsPerShareNumeratorActivityAbstract" xlink:label="loc_wab_EarningsPerShareNumeratorActivityAbstract_5223413FD77406A3C4891D75EE901981" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetIncomeLoss_F4DF25785868CD3B51671D75EE9294A6_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_F4DF25785868CD3B51671D75EE9294A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net income attributable to Wabtec shareholders </link:label>
<link:label id="lab_us-gaap_NetIncomeLoss_F4DF25785868CD3B51671D75EE9294A6_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_F4DF25785868CD3B51671D75EE9294A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </link:label>
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<link:label id="lab_us-gaap_DividendsCommonStockStock_573217E81FF420D69E951D75F2B18A43_negatedLabel_en-US" xlink:label="lab_us-gaap_DividendsCommonStockStock_573217E81FF420D69E951D75F2B18A43" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Less: dividends declared - common shares and non-vested restricted stock </link:label>
<link:label id="lab_us-gaap_DividendsCommonStockStock_573217E81FF420D69E951D75F2B18A43_label_en-US" xlink:label="lab_us-gaap_DividendsCommonStockStock_573217E81FF420D69E951D75F2B18A43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividends, Common Stock, Stock </link:label>
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<link:label id="lab_us-gaap_UndistributedEarnings_D7959DD87FDE4D81C2351D75EE93066B_totalLabel_en-US" xlink:label="lab_us-gaap_UndistributedEarnings_D7959DD87FDE4D81C2351D75EE93066B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Undistributed earnings </link:label>
<link:label id="lab_us-gaap_UndistributedEarnings_D7959DD87FDE4D81C2351D75EE93066B_label_en-US" xlink:label="lab_us-gaap_UndistributedEarnings_D7959DD87FDE4D81C2351D75EE93066B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Undistributed Earnings, Basic </link:label>
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<link:label id="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D_terseLabel_en-US" xlink:label="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage allocated to common shareholders (as a percent) </link:label>
<link:label id="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D_label_en-US" xlink:label="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Percentage Of Net Income Allocated To Common Shareholders </link:label>
<link:label id="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D_documentation_en-US" xlink:label="lab_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Percentage allocated to common shareholders. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_PercentageOfNetIncomeAllocatedToCommonShareholders" xlink:label="loc_wab_PercentageOfNetIncomeAllocatedToCommonShareholders_F02A0530739B8DF9D2BD1D75EE93430D" xlink:type="locator"/>
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<link:label id="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF_terseLabel_en-US" xlink:label="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Undistributed earnings allocated to common shareholders </link:label>
<link:label id="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF_label_en-US" xlink:label="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Undistributed Earnings Allocated To Common Shareholders </link:label>
<link:label id="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF_documentation_en-US" xlink:label="lab_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The amount of undistributed earnings allocated to common shareholders for the periods presented. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_UndistributedEarningsAllocatedToCommonShareholders" xlink:label="loc_wab_UndistributedEarningsAllocatedToCommonShareholders_AAB2DADB47271BCFC9561D75EE93B4BF" xlink:type="locator"/>
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<link:label id="lab_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E_terseLabel_en-US" xlink:label="lab_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Add: dividends declared - common shares </link:label>
<link:label id="lab_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E_label_en-US" xlink:label="lab_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividends Declared Common Shares </link:label>
<link:label id="lab_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E_documentation_en-US" xlink:label="lab_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Dividends declared common shares. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DividendsDeclaredCommonShares" xlink:label="loc_wab_DividendsDeclaredCommonShares_D7423CF997EEBB0CAAC61D75EE93F77E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Dividends declared - preferred shares </link:label>
<link:label id="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C_label_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preferred Stock Dividends and Other Adjustments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustments" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C" xlink:to="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_8034B51B2367EE80DBBB1D75EE94F39C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Numerator for basic earnings per common share </link:label>
<link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Available to Common Stockholders, Basic </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_7C03AC3F34D5D2BB63D81D75EE9486F7" xlink:type="arc"/>
<link:label id="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_CBCDCE0AA5801EAAACF41D75EE940C78_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_CBCDCE0AA5801EAAACF41D75EE940C78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends declared - preferred shares </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustments" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_CBCDCE0AA5801EAAACF41D75EE940C78" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments_CBCDCE0AA5801EAAACF41D75EE940C78" xlink:to="lab_us-gaap_PreferredStockDividendsAndOtherAdjustments_CBCDCE0AA5801EAAACF41D75EE940C78" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Numerator for diluted earnings per common share </link:label>
<link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Available to Common Stockholders, Diluted </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_279B2400783E5159097E1D75EE941BA4" xlink:type="arc"/>
<link:label id="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708_terseLabel_en-US" xlink:label="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Denominator </link:label>
<link:label id="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708_label_en-US" xlink:label="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share Denominator Activity [Abstract] </link:label>
<link:label id="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708_documentation_en-US" xlink:label="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Earnings Per Share Denominator Activity [Abstract] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_EarningsPerShareDenominatorActivityAbstract" xlink:label="loc_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708" xlink:to="lab_wab_EarningsPerShareDenominatorActivityAbstract_E158898BAC75CB9BE6881D75EE94A708" xlink:type="arc"/>
<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Basic weighted average common shares outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Basic </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB" xlink:to="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_017AA48DF47832A9CB801D75EE9489BB" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF_terseLabel_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assumed conversion of preferred shares (in shares) </link:label>
<link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF_label_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF" xlink:to="lab_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_4C669032D103A3F025041D75EE958EBF" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557_terseLabel_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assumed conversion of dilutive stock-based compensation plans (in shares) </link:label>
<link:label id="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557_label_en-US" xlink:label="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557" xlink:to="lab_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_BAD4E568F096BD408C0C1D75EE958557" xlink:type="arc"/>
<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2_totalLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversion (in shares) </link:label>
<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Diluted </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2" xlink:to="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_583BF28C1E2ECA6A4AE71D75EE9549C2" xlink:type="arc"/>
<link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net income attributable to Wabtec shareholders per common share </link:label>
<link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Basic and Diluted [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_E735EBD23A95DA14E5AE1D75EE95315E" xlink:type="arc"/>
<link:label id="lab_us-gaap_EarningsPerShareBasic_EB1687A16058039E9F881D75EE952C24_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_EB1687A16058039E9F881D75EE952C24" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Basic (in dollars per share) </link:label>
<link:label id="lab_us-gaap_EarningsPerShareBasic_EB1687A16058039E9F881D75EE952C24_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_EB1687A16058039E9F881D75EE952C24" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Basic </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_EB1687A16058039E9F881D75EE952C24" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_89E8305DC3E34F0F1AFEEE86D1964CF2_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_89E8305DC3E34F0F1AFEEE86D1964CF2" 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_89E8305DC3E34F0F1AFEEE86D1964CF2_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_89E8305DC3E34F0F1AFEEE86D1964CF2" 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_89E8305DC3E34F0F1AFEEE86D1964CF2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible assets, net of accumulated amortization </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_7F2700A5E15C39C9EC9AEE86D196D5CF" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7DDB078B087030CB3656EE86D196B705_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7DDB078B087030CB3656EE86D196B705" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible assets, accumulated amortization </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7DDB078B087030CB3656EE86D196B705_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7DDB078B087030CB3656EE86D196B705" 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_7DDB078B087030CB3656EE86D196B705" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7DDB078B087030CB3656EE86D196B705" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7DDB078B087030CB3656EE86D196B705" xlink:type="arc"/>
<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_F94E34DCEBD89218D2D2DD32DC2369F8_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7B4B785A974D56B3B82BBEDD9C025FB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements [Abstract] </link:label>
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<link:label id="lab_us-gaap_NatureOfOperations_2AAF166C5BE78F26D3ACDD32DC23AB57_terseLabel_en-US" xlink:label="lab_us-gaap_NatureOfOperations_035C2156F64E53ABAA2AD30826185B1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business </link:label>
<link:label id="lab_us-gaap_NatureOfOperations_2AAF166C5BE78F26D3ACDD32DC23AB57_label_en-US" xlink:label="lab_us-gaap_NatureOfOperations_035C2156F64E53ABAA2AD30826185B1F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nature of Operations [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="loc_us-gaap_NatureOfOperations_035C2156F64E53ABAA2AD30826185B1F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LeasesAbstract_14C61A02DA800D5B8B17F868ED2AC8CE_label_en-US" xlink:label="lab_us-gaap_LeasesAbstract_14C61A02DA800D5B8B17F868ED2AC8CE" 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_14C61A02DA800D5B8B17F868ED2AC8CE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseCost_D89C6397EBE468810210F868ED2A9F81_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_D89C6397EBE468810210F868ED2A9F81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease expense </link:label>
<link:label id="lab_us-gaap_OperatingLeaseCost_D89C6397EBE468810210F868ED2A9F81_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_D89C6397EBE468810210F868ED2A9F81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaap_OperatingLeaseCost_D89C6397EBE468810210F868ED2A9F81" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_DD563E8DCB6479C251FDF868ED2A94FF_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_DD563E8DCB6479C251FDF868ED2A94FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance lease expense amortization of leased assets </link:label>
<link:label id="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_DD563E8DCB6479C251FDF868ED2A94FF_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAssetAmortization_DD563E8DCB6479C251FDF868ED2A94FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Right-of-Use Asset, Amortization </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_DD563E8DCB6479C251FDF868ED2A94FF" xlink:type="locator"/>
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<link:label id="lab_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376_terseLabel_en-US" xlink:label="lab_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short-term and variable lease expense </link:label>
<link:label id="lab_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376_label_en-US" xlink:label="lab_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term And Variable Lease, Cost </link:label>
<link:label id="lab_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376_documentation_en-US" xlink:label="lab_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Short-term Lease, Variable Lease, Cost </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ShorttermAndVariableLeaseCost" xlink:label="loc_wab_ShorttermAndVariableLeaseCost_364A551D3939390BFFC3F868ED2A1376" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SubleaseIncome_0E39657A84D5122EF14FF868ED2A4743_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_SubleaseIncome_0E39657A84D5122EF14FF868ED2A4743" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Sublease income </link:label>
<link:label id="lab_us-gaap_SubleaseIncome_0E39657A84D5122EF14FF868ED2A4743_label_en-US" xlink:label="lab_us-gaap_SubleaseIncome_0E39657A84D5122EF14FF868ED2A4743" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sublease Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubleaseIncome" xlink:label="loc_us-gaap_SubleaseIncome_0E39657A84D5122EF14FF868ED2A4743" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LeaseCost_742E209F7AF8D9285BACF868ED2BD9D8_totalLabel_en-US" xlink:label="lab_us-gaap_LeaseCost_742E209F7AF8D9285BACF868ED2BD9D8" 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_LeaseCost_742E209F7AF8D9285BACF868ED2BD9D8_label_en-US" xlink:label="lab_us-gaap_LeaseCost_742E209F7AF8D9285BACF868ED2BD9D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lease, Cost </link:label>
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<link:label id="lab_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_5A0ABEB7DB207797C2DBDD32DCB09DC8_label_en-US" xlink:label="lab_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_471B33975B7752709903C06B5F37B628" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Financial Information Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:label="loc_srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract_471B33975B7752709903C06B5F37B628" xlink:type="locator"/>
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<link:label id="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_C4A6A885D8548E83EC86DD32DCB0DE8A_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_25375D55FE9B57138F131FF0BED05BD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Balance Sheet </link:label>
<link:label id="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_C4A6A885D8548E83EC86DD32DCB0DE8A_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedBalanceSheetTableTextBlock_25375D55FE9B57138F131FF0BED05BD4" 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_25375D55FE9B57138F131FF0BED05BD4" xlink:type="locator"/>
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<link:label id="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_3A4ED5B4872264A2EC68DD32DCB03379_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_D14F316FC7525C6EA1DD8B1476EA6D75" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Income Statement </link:label>
<link:label id="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_3A4ED5B4872264A2EC68DD32DCB03379_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedIncomeStatementTableTextBlock_D14F316FC7525C6EA1DD8B1476EA6D75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Income Statement [Table Text Block] </link:label>
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<link:label id="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_9CC109F6595A5467AED8DD32DCB01793_terseLabel_en-US" xlink:label="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_872CB54DB5545D84800335CBE45C702B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Cash Flow Statement </link:label>
<link:label id="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_9CC109F6595A5467AED8DD32DCB01793_label_en-US" xlink:label="lab_srt_ScheduleOfCondensedCashFlowStatementTableTextBlock_872CB54DB5545D84800335CBE45C702B" 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>
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<link:label id="lab_us-gaap_StatementClassOfStockAxis_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A" 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_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A" 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_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A" xlink:to="lab_us-gaap_StatementClassOfStockAxis_FE7E9F7C0FF7DEFA830ADAB4A6FEA46A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ClassOfStockDomain_81E98E983AAB5BCA3102DAB4A71AE5DD_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_81E98E983AAB5BCA3102DAB4A71AE5DD" 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_81E98E983AAB5BCA3102DAB4A71AE5DD_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_81E98E983AAB5BCA3102DAB4A71AE5DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_81E98E983AAB5BCA3102DAB4A71AE5DD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_81E98E983AAB5BCA3102DAB4A71AE5DD" xlink:to="lab_us-gaap_ClassOfStockDomain_81E98E983AAB5BCA3102DAB4A71AE5DD" xlink:type="arc"/>
<link:label id="lab_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C_terseLabel_en-US" xlink:label="lab_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Series A Preferred Stock </link:label>
<link:label id="lab_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C_label_en-US" xlink:label="lab_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Series A Preferred Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C" xlink:to="lab_us-gaap_SeriesAPreferredStockMember_B10A7CA77C6BB20ACF7DDAB50D503E7C" xlink:type="arc"/>
<link:label id="lab_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Legal Entity [Axis] </link:label>
<link:label id="lab_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF_label_en-US" xlink:label="lab_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Legal Entity [Axis] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF" xlink:to="lab_dei_LegalEntityAxis_9779BF50AB203A677E4FDAB5D4BE9ECF" xlink:type="arc"/>
<link:label id="lab_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity [Domain] </link:label>
<link:label id="lab_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A_label_en-US" xlink:label="lab_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity [Domain] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A" xlink:to="lab_dei_EntityDomain_7779455CC360C5DDD897DAB5D4DCC85A" xlink:type="arc"/>
<link:label id="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB_terseLabel_en-US" xlink:label="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Wabtec </link:label>
<link:label id="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB_label_en-US" xlink:label="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Wabtec [Member] </link:label>
<link:label id="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB_documentation_en-US" xlink:label="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Wabtec [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_WabtecMember" xlink:label="loc_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB" xlink:to="lab_wab_WabtecMember_A017D5519DA618F4CEA1DAB69BCEBAEB" xlink:type="arc"/>
<link:label id="lab_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59_terseLabel_en-US" xlink:label="lab_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Parent </link:label>
<link:label id="lab_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59_label_en-US" xlink:label="lab_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Parent Company [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ParentCompanyMember" xlink:label="loc_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59" xlink:to="lab_srt_ParentCompanyMember_768849876ABE2DDBDAE5DAA6289BCE59" xlink:type="arc"/>
<link:label id="lab_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932_terseLabel_en-US" xlink:label="lab_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantors </link:label>
<link:label id="lab_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932_label_en-US" xlink:label="lab_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Subsidiaries [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_GuarantorSubsidiariesMember" xlink:label="loc_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932" xlink:to="lab_srt_GuarantorSubsidiariesMember_606DDC7D037B683CFBDEDAA6289BC932" xlink:type="arc"/>
<link:label id="lab_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46_terseLabel_en-US" xlink:label="lab_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-Guarantors </link:label>
<link:label id="lab_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46_label_en-US" xlink:label="lab_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Guarantor Subsidiaries [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_NonGuarantorSubsidiariesMember" xlink:label="loc_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46" xlink:to="lab_srt_NonGuarantorSubsidiariesMember_864DE6AB0C9C87F436D1DAA6289CCB46" xlink:type="arc"/>
<link:label id="lab_srt_ConsolidationItemsAxis_875D4B543B3D867BE7FEDAA6289CAB87_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_875D4B543B3D867BE7FEDAA6289CAB87" 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_875D4B543B3D867BE7FEDAA6289CAB87_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_875D4B543B3D867BE7FEDAA6289CAB87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_875D4B543B3D867BE7FEDAA6289CAB87" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsAxis_875D4B543B3D867BE7FEDAA6289CAB87" xlink:to="lab_srt_ConsolidationItemsAxis_875D4B543B3D867BE7FEDAA6289CAB87" xlink:type="arc"/>
<link:label id="lab_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Domain] </link:label>
<link:label id="lab_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF" xlink:to="lab_srt_ConsolidationItemsDomain_791084AFB4EF4A6DF7BBDAA6289C61CF" xlink:type="arc"/>
<link:label id="lab_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D_terseLabel_en-US" xlink:label="lab_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reportable Legal Entities </link:label>
<link:label id="lab_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D_label_en-US" xlink:label="lab_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reportable Legal Entities [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ReportableLegalEntitiesMember" xlink:label="loc_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D" xlink:to="lab_srt_ReportableLegalEntitiesMember_5062BC0CAB83BA4207A2DAA6289C288D" xlink:type="arc"/>
<link:label id="lab_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0_terseLabel_en-US" xlink:label="lab_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Elimination </link:label>
<link:label id="lab_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0_label_en-US" xlink:label="lab_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation, Eliminations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationEliminationsMember" xlink:label="loc_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0" xlink:to="lab_srt_ConsolidationEliminationsMember_0FCACED1E4595108C410DAA6289CAFD0" xlink:type="arc"/>
<link:label id="lab_srt_CondensedFinancialStatementsCaptionsLineItems_3A9C2EF89C95DDBCC028DAA6289DAAA4_terseLabel_en-US" xlink:label="lab_srt_CondensedFinancialStatementsCaptionsLineItems_3A9C2EF89C95DDBCC028DAA6289DAAA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Financial Statements, Captions [Line Items] </link:label>
<link:label id="lab_srt_CondensedFinancialStatementsCaptionsLineItems_3A9C2EF89C95DDBCC028DAA6289DAAA4_label_en-US" xlink:label="lab_srt_CondensedFinancialStatementsCaptionsLineItems_3A9C2EF89C95DDBCC028DAA6289DAAA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Financial Statements, Captions [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_srt_CondensedFinancialStatementsCaptionsLineItems_3A9C2EF89C95DDBCC028DAA6289DAAA4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7_verboseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Preferred stock, outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preferred Stock, Shares Outstanding </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_BE631625EFE13D752FEBDAB43F2C92E7" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_42DB742E0677D840EC0ADAA6289DA1C7_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_42DB742E0677D840EC0ADAA6289DA1C7" 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_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_42DB742E0677D840EC0ADAA6289DA1C7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_42DB742E0677D840EC0ADAA6289DA1C7" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_42DB742E0677D840EC0ADAA6289DA1C7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185_terseLabel_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Receivables, net </link:label>
<link:label id="lab_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185_label_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivables, Net, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185" xlink:to="lab_us-gaap_ReceivablesNetCurrent_9E0DEAB8C98AEDB65CEDDAA6289D0185" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryNet_74261C5CE4C30C55B62ADAA6289DDEB1_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_74261C5CE4C30C55B62ADAA6289DDEB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_74261C5CE4C30C55B62ADAA6289DDEB1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_74261C5CE4C30C55B62ADAA6289DDEB1" xlink:to="lab_us-gaap_InventoryNet_74261C5CE4C30C55B62ADAA6289DDEB1" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current assets - other </link:label>
<link:label id="lab_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Miscellaneous, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMiscellaneousCurrent" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99" xlink:to="lab_us-gaap_OtherAssetsMiscellaneousCurrent_0640431200F5A77AC310DAA6289E4E99" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB" xlink:to="lab_us-gaap_AssetsCurrent_A345230FDB2B8718D8ADDAA6289E92DB" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_E71CC082C78EFE356B50DAA6289E6814_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_E71CC082C78EFE356B50DAA6289E6814" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, plant and equipment, net </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_E71CC082C78EFE356B50DAA6289E6814_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_E71CC082C78EFE356B50DAA6289E6814" 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_E71CC082C78EFE356B50DAA6289E6814" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_E71CC082C78EFE356B50DAA6289E6814" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_E71CC082C78EFE356B50DAA6289E6814" xlink:type="arc"/>
<link:label id="lab_us-gaap_Goodwill_2E478630D79A4826FD37DAA6289EA9A2_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_2E478630D79A4826FD37DAA6289EA9A2" 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_2E478630D79A4826FD37DAA6289EA9A2_label_en-US" xlink:label="lab_us-gaap_Goodwill_2E478630D79A4826FD37DAA6289EA9A2" 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_2E478630D79A4826FD37DAA6289EA9A2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_2E478630D79A4826FD37DAA6289EA9A2" xlink:to="lab_us-gaap_Goodwill_2E478630D79A4826FD37DAA6289EA9A2" xlink:type="arc"/>
<link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment in subsidiaries </link:label>
<link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6" xlink:to="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_EBD8B06B4C61EB88AD8ADAA628A3F8D6" xlink:type="arc"/>
<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other intangibles, net </link:label>
<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intangible Assets, Net (Excluding Goodwill) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_0A4A9D1D047BF4420AEEDAA628A3298A" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other long-term assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_22D9FE8A193C33059879DAA628A46C09" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_3806A435B86ECB9D2909DAA628A4B690_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_3806A435B86ECB9D2909DAA628A4B690" 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_3806A435B86ECB9D2909DAA628A4B690_label_en-US" xlink:label="lab_us-gaap_Assets_3806A435B86ECB9D2909DAA628A4B690" 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_3806A435B86ECB9D2909DAA628A4B690" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_3806A435B86ECB9D2909DAA628A4B690" xlink:to="lab_us-gaap_Assets_3806A435B86ECB9D2909DAA628A4B690" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B" xlink:to="lab_us-gaap_LiabilitiesCurrent_7FFC10E8675178F7161BDAA628A4141B" xlink:type="arc"/>
<link:label id="lab_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5_terseLabel_en-US" xlink:label="lab_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inter-company </link:label>
<link:label id="lab_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5_label_en-US" xlink:label="lab_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany Loans </link:label>
<link:label id="lab_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5_documentation_en-US" xlink:label="lab_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany Loans </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_IntercompanyLoans" xlink:label="loc_wab_IntercompanyLoans_5672C8CF3AE0FFBE3107DAA628A42ED5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_872C47314D90181204D0DAA628A4042E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_872C47314D90181204D0DAA628A4042E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_872C47314D90181204D0DAA628A4042E_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligations_872C47314D90181204D0DAA628A4042E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt and Lease Obligation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_872C47314D90181204D0DAA628A4042E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_61EEF7394A4A66430671DAA628A5F38D_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_61EEF7394A4A66430671DAA628A5F38D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term liabilities - other </link:label>
<link:label id="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_61EEF7394A4A66430671DAA628A5F38D_label_en-US" xlink:label="lab_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_61EEF7394A4A66430671DAA628A5F38D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Other than Long-term Debt, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_61EEF7394A4A66430671DAA628A5F38D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_Liabilities_A74A8EB6A939095AEF84DAA628A59ED2_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_A74A8EB6A939095AEF84DAA628A59ED2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total Liabilities </link:label>
<link:label id="lab_us-gaap_Liabilities_A74A8EB6A939095AEF84DAA628A59ED2_label_en-US" xlink:label="lab_us-gaap_Liabilities_A74A8EB6A939095AEF84DAA628A59ED2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 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_A74A8EB6A939095AEF84DAA628A59ED2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_A74A8EB6A939095AEF84DAA628A59ED2" xlink:to="lab_us-gaap_Liabilities_A74A8EB6A939095AEF84DAA628A59ED2" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquity_5A1C56B3B61CF4233F07DAA628A508CD_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_5A1C56B3B61CF4233F07DAA628A508CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shareholders' equity </link:label>
<link:label id="lab_us-gaap_StockholdersEquity_5A1C56B3B61CF4233F07DAA628A508CD_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_5A1C56B3B61CF4233F07DAA628A508CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Parent </link:label>
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<link:label id="lab_us-gaap_MinorityInterest_E8D75E2E9EE94B19441BDAA628A5F928_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterest_E8D75E2E9EE94B19441BDAA628A5F928" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling interest </link:label>
<link:label id="lab_us-gaap_MinorityInterest_E8D75E2E9EE94B19441BDAA628A5F928_label_en-US" xlink:label="lab_us-gaap_MinorityInterest_E8D75E2E9EE94B19441BDAA628A5F928" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaap_MinorityInterest_E8D75E2E9EE94B19441BDAA628A5F928" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_B4B3B1CA0656BDAB3AB0DAA628A5DB35_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_B4B3B1CA0656BDAB3AB0DAA628A5DB35" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total Equity </link:label>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_B4B3B1CA0656BDAB3AB0DAA628A5DB35_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_B4B3B1CA0656BDAB3AB0DAA628A5DB35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_B4B3B1CA0656BDAB3AB0DAA628A5DB35" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_407EECA6A3736BCFF625DAA628A62A7E_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_407EECA6A3736BCFF625DAA628A62A7E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total Liabilities and Equity </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_407EECA6A3736BCFF625DAA628A62A7E_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_407EECA6A3736BCFF625DAA628A62A7E" xlink:role="http://www.xbrl.org/2003/role/label" 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_407EECA6A3736BCFF625DAA628A62A7E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_508DEDC8C4DE7FFB6593F868EAD423C2_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_508DEDC8C4DE7FFB6593F868EAD423C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total net sales </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_508DEDC8C4DE7FFB6593F868EAD423C2_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_508DEDC8C4DE7FFB6593F868EAD423C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer, Excluding Assessed Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_508DEDC8C4DE7FFB6593F868EAD423C2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_D0E855A50C5C4EC650F1F868EAD48907_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_D0E855A50C5C4EC650F1F868EAD48907" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Total cost of sales </link:label>
<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_D0E855A50C5C4EC650F1F868EAD48907_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_D0E855A50C5C4EC650F1F868EAD48907" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Goods and Services Sold </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_D0E855A50C5C4EC650F1F868EAD48907" xlink:type="locator"/>
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<link:label id="lab_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823_totalLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Gross profit </link:label>
<link:label id="lab_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823_label_en-US" xlink:label="lab_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gross Profit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823" xlink:to="lab_us-gaap_GrossProfit_0AAFFF554D537D2A8576F868EAD45823" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Total operating expenses </link:label>
<link:label id="lab_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA_label_en-US" xlink:label="lab_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Expenses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA" xlink:to="lab_us-gaap_OperatingExpenses_20B3527CFEC352C5CDEDF868EAD526BA" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingIncomeLoss_DC9F8CC0E2D888925370F868EADA3CE4_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_DC9F8CC0E2D888925370F868EADA3CE4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Income from operations </link:label>
<link:label id="lab_us-gaap_OperatingIncomeLoss_DC9F8CC0E2D888925370F868EADA3CE4_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_DC9F8CC0E2D888925370F868EADA3CE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Income (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_DC9F8CC0E2D888925370F868EADA3CE4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InterestIncomeExpenseNet_564B170E35EF79E016D3F868EADB5BA7_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_564B170E35EF79E016D3F868EADB5BA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest expense, net </link:label>
<link:label id="lab_us-gaap_InterestIncomeExpenseNet_564B170E35EF79E016D3F868EADB5BA7_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_564B170E35EF79E016D3F868EADB5BA7" 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_564B170E35EF79E016D3F868EADB5BA7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other income (expense), net </link:label>
<link:label id="lab_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nonoperating Income (Expense) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_31E6610FE88A5CA3EB71F868EADBFACA" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FF013E6D45E1C79BA380F868EADBD2E4_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FF013E6D45E1C79BA380F868EADBD2E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity earnings (loss) </link:label>
<link:label id="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FF013E6D45E1C79BA380F868EADBD2E4_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FF013E6D45E1C79BA380F868EADBD2E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Subsidiaries, 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_IncomeLossFromSubsidiariesNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_FF013E6D45E1C79BA380F868EADBD2E4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7DF1B570D71F173BBCEAF868EADC4AB3_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7DF1B570D71F173BBCEAF868EADC4AB3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Income from operations before income taxes </link:label>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7DF1B570D71F173BBCEAF868EADC4AB3_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7DF1B570D71F173BBCEAF868EADC4AB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest </link:label>
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<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_AB295A5636D436C37574F868EADC909E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_AB295A5636D436C37574F868EADC909E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Income tax benefit (expense) </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_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_AB295A5636D436C37574F868EADC909E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProfitLoss_24E32E86CA0D6579DB9BF868EADC55A8_totalLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_24E32E86CA0D6579DB9BF868EADC55A8" 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_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_24E32E86CA0D6579DB9BF868EADC55A8" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_637980C9A4FAF4B3681EF868EADC6CBC_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_637980C9A4FAF4B3681EF868EADC6CBC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less: Net loss attributable to noncontrolling interest </link:label>
<link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_637980C9A4FAF4B3681EF868EADC6CBC_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_637980C9A4FAF4B3681EF868EADC6CBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_637980C9A4FAF4B3681EF868EADC6CBC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetIncomeLoss_D8FD1E7EB8635FD67034F868EADC1972_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_D8FD1E7EB8635FD67034F868EADC1972" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net income attributable to Wabtec shareholders </link:label>
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<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_7175B303EB002788FB6EF868EADD9F8A_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_7175B303EB002788FB6EF868EADD9F8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive income attributable to Wabtec shareholders </link:label>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_7175B303EB002788FB6EF868EADD9F8A_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_7175B303EB002788FB6EF868EADD9F8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, 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_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_7175B303EB002788FB6EF868EADD9F8A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessCombinationsAbstract_C5736008B69908F79B002305DF934E48_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsAbstract_C5736008B69908F79B002305DF934E48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combinations [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_C5736008B69908F79B002305DF934E48" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BEA9F89577AAB716F8672305DF935798_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BEA9F89577AAB716F8672305DF935798" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Business Acquisitions, by Acquisition [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BEA9F89577AAB716F8672305DF935798_label_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BEA9F89577AAB716F8672305DF935798" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Business Acquisitions, by Acquisition [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BEA9F89577AAB716F8672305DF935798" xlink:type="locator"/>
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<link:label id="lab_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129_terseLabel_en-US" xlink:label="lab_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pre-merger Wabtec Stockholders </link:label>
<link:label id="lab_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129_label_en-US" xlink:label="lab_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Pre-merger Wabtec Stockholders [Member] </link:label>
<link:label id="lab_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129_documentation_en-US" xlink:label="lab_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Pre-merger Wabtec Stockholders [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_PremergerWabtecStockholdersMember" xlink:label="loc_wab_PremergerWabtecStockholdersMember_88E5893732695EACEA7E2305DF951129" xlink:type="locator"/>
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<link:label id="lab_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F_terseLabel_en-US" xlink:label="lab_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> General Electric Company </link:label>
<link:label id="lab_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F_label_en-US" xlink:label="lab_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> General Electric Company [Member] </link:label>
<link:label id="lab_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F_documentation_en-US" xlink:label="lab_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> General Electric Company [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_GeneralElectricCompanyMember" xlink:label="loc_wab_GeneralElectricCompanyMember_527E799CAC32D334E0622305DF95199F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Axis] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7" xlink:to="lab_us-gaap_BusinessAcquisitionAxis_1DA50CD112CC058BAD9C2305DF953FF7" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_726125D8F4CBE07348922305DF95F542_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_726125D8F4CBE07348922305DF95F542" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Acquiree [Domain] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_726125D8F4CBE07348922305DF95F542_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_726125D8F4CBE07348922305DF95F542" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Acquiree [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_726125D8F4CBE07348922305DF95F542" xlink:type="locator"/>
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<link:label id="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F_terseLabel_en-US" xlink:label="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> GE Transportation </link:label>
<link:label id="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F_label_en-US" xlink:label="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> GE Transportation [Member] </link:label>
<link:label id="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F_documentation_en-US" xlink:label="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> GE Transportation [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_GETransportationMember" xlink:label="loc_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F" xlink:to="lab_wab_GETransportationMember_BCAA86BA908818A2F42A2305DF96811F" xlink:type="arc"/>
<link:label id="lab_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7_terseLabel_en-US" xlink:label="lab_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> GET Brazil </link:label>
<link:label id="lab_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7_label_en-US" xlink:label="lab_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> GET Brazil [Member] </link:label>
<link:label id="lab_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7_documentation_en-US" xlink:label="lab_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> GET Brazil [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_GETBrazilMember" xlink:label="loc_wab_GETBrazilMember_A0C56BE6D83C5EC3B2C02305DF9639C7" xlink:type="locator"/>
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<link:label id="lab_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2_terseLabel_en-US" xlink:label="lab_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Ownership [Axis] </link:label>
<link:label id="lab_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2_label_en-US" xlink:label="lab_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Ownership [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipAxis" xlink:label="loc_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2" xlink:to="lab_srt_OwnershipAxis_DB52C1A8FF60F0A4B7CD2305DF9646B2" xlink:type="arc"/>
<link:label id="lab_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F_terseLabel_en-US" xlink:label="lab_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Ownership [Domain] </link:label>
<link:label id="lab_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F_label_en-US" xlink:label="lab_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Ownership [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F" xlink:to="lab_srt_OwnershipDomain_04071CE281570B93D9F12305DF96892F" xlink:type="arc"/>
<link:label id="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB_terseLabel_en-US" xlink:label="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> GE and Pre-Merger Holders </link:label>
<link:label id="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB_label_en-US" xlink:label="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> GE and Pre-Merger Holders [Member] </link:label>
<link:label id="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB_documentation_en-US" xlink:label="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> GE and Pre-Merger Holders [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_GEandPreMergerHoldersMember" xlink:label="loc_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB" xlink:to="lab_wab_GEandPreMergerHoldersMember_334BB9805DEA574ECD8D2305DF9747AB" xlink:type="arc"/>
<link:label id="lab_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21_terseLabel_en-US" xlink:label="lab_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> SpinCo Common Stock </link:label>
<link:label id="lab_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21_label_en-US" xlink:label="lab_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> SpinCo Common Stock [Member] </link:label>
<link:label id="lab_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21_documentation_en-US" xlink:label="lab_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> SpinCo Common Stock [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SpinCoCommonStockMember" xlink:label="loc_wab_SpinCoCommonStockMember_1A9BFF11A8C4A2EEBF6C2305DF97DC21" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ConvertiblePreferredStockMember_9630DDE3FBF7F148DEAC2305DF986E20_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertiblePreferredStockMember_9630DDE3FBF7F148DEAC2305DF986E20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible Preferred Stock </link:label>
<link:label id="lab_us-gaap_ConvertiblePreferredStockMember_9630DDE3FBF7F148DEAC2305DF986E20_label_en-US" xlink:label="lab_us-gaap_ConvertiblePreferredStockMember_9630DDE3FBF7F148DEAC2305DF986E20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Convertible Preferred Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_9630DDE3FBF7F148DEAC2305DF986E20" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock </link:label>
<link:label id="lab_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73" xlink:to="lab_us-gaap_CommonStockMember_CDE77E7B085E578D996B2305DF985C73" xlink:type="arc"/>
<link:label id="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372_terseLabel_en-US" xlink:label="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> SpinCo Class A Preferred Stock </link:label>
<link:label id="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372_label_en-US" xlink:label="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> SpinCo Class A Preferred Stock [Member] </link:label>
<link:label id="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372_documentation_en-US" xlink:label="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> SpinCo Class A Preferred Stock [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SpinCoClassAPreferredStockMember" xlink:label="loc_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372" xlink:to="lab_wab_SpinCoClassAPreferredStockMember_9A977BEEABB6432DB1772305DF98B372" xlink:type="arc"/>
<link:label id="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080_terseLabel_en-US" xlink:label="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> SpinCo Class B Preferred Stock </link:label>
<link:label id="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080_label_en-US" xlink:label="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> SpinCo Class B Preferred Stock [Member] </link:label>
<link:label id="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080_documentation_en-US" xlink:label="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> SpinCo Class B Preferred Stock [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SpinCoClassBPreferredStockMember" xlink:label="loc_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080" xlink:to="lab_wab_SpinCoClassBPreferredStockMember_EBF23A5E0B79B17347E02305DF980080" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Line Items] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E" xlink:to="lab_us-gaap_BusinessAcquisitionLineItems_A80D99C5EA3AB70BE9F32305DF98307E" xlink:type="arc"/>
<link:label id="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consideration transferred </link:label>
<link:label id="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705_label_en-US" xlink:label="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Consideration Transferred, Certain Identifiable Assets of Acquired </link:label>
<link:label id="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705_documentation_en-US" xlink:label="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Consideration Transferred, Certain Identifiable Assets of Acquired </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired" xlink:label="loc_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705" xlink:to="lab_wab_BusinessCombinationConsiderationTransferredCertainIdentifiableAssetsofAcquired_2A98843E71FCC9D8E8A52305DF993705" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, shares outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Outstanding </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_5B082B0D5DE2A75FB1052305DF992A46" xlink:type="arc"/>
<link:label id="lab_us-gaap_PreferredStockSharesOutstanding_0C0FBF5FE23450C71C8B2305DF99C733_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_0C0FBF5FE23450C71C8B2305DF99C733" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Preferred stock, shares outstanding (in shares) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_0C0FBF5FE23450C71C8B2305DF99C733" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_0C0FBF5FE23450C71C8B2305DF99C733" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_0C0FBF5FE23450C71C8B2305DF99C733" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shares issuable (in shares) </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Equity Interest Issued or Issuable, Number of Shares </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:label="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1" xlink:to="lab_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_D0D6ED48AE25E738BBBF2305DF998DB1" xlink:type="arc"/>
<link:label id="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of outstanding shares transferred </link:label>
<link:label id="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC_label_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Percentage of Outstanding Shares Transferred </link:label>
<link:label id="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC_documentation_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Percentage of Outstanding Shares Transferred </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_BusinessCombinationPercentageofOutstandingSharesTransferred" xlink:label="loc_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC" xlink:to="lab_wab_BusinessCombinationPercentageofOutstandingSharesTransferred_5AC6921C7F74AA14626D2305DF999EFC" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total future consideration </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Businesses, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesGross_235B40BACCB210C3E9E62305DF9AC406" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesIssued_F56E39BBDF0461B048B42305DF9ADA2E_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_F56E39BBDF0461B048B42305DF9ADA2E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, shares issued (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesIssued_F56E39BBDF0461B048B42305DF9ADA2E_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_F56E39BBDF0461B048B42305DF9ADA2E" xlink:role="http://www.xbrl.org/2003/role/label" 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_F56E39BBDF0461B048B42305DF9ADA2E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_F56E39BBDF0461B048B42305DF9ADA2E" xlink:to="lab_us-gaap_CommonStockSharesIssued_F56E39BBDF0461B048B42305DF9ADA2E" xlink:type="arc"/>
<link:label id="lab_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Preferred stock, shares issued (in shares) </link:label>
<link:label id="lab_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preferred 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_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E" xlink:to="lab_us-gaap_PreferredStockSharesIssued_07A7D2DD838E950D22EB2305DF9A9D5E" xlink:type="arc"/>
<link:label id="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E_terseLabel_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of common shares outstanding </link:label>
<link:label id="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E_label_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Percentage of Common Shares, Outstanding </link:label>
<link:label id="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E_documentation_en-US" xlink:label="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Percentage of Common Shares, Outstanding </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_BusinessCombinationPercentageofCommonSharesOutstanding" xlink:label="loc_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E" xlink:to="lab_wab_BusinessCombinationPercentageofCommonSharesOutstanding_9CF99E47698B83160D712305DF9A026E" xlink:type="arc"/>
<link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of shares sold (in shares) </link:label>
<link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5_label_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sale of Stock, Number of Shares Issued in Transaction </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5" xlink:to="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_1898BC79F22C1DC1AE6A2305DF9ADEF5" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business combination, consideration transferred </link:label>
<link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Consideration Transferred </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD" xlink:to="lab_us-gaap_BusinessCombinationConsiderationTransferred1_8D7BCBE169F5C04700CC2305DF9A5DAD" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Closing share price (in USD per share) </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Share Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087" xlink:to="lab_us-gaap_BusinessAcquisitionSharePrice_A9087AAA3530A51EA1E02305DF9B8087" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_EADF7F3653BEF6702C3F2305DF9BF778_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_EADF7F3653BEF6702C3F2305DF9BF778" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling interest acquired </link:label>
<link:label id="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_EADF7F3653BEF6702C3F2305DF9BF778_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_EADF7F3653BEF6702C3F2305DF9BF778" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_EADF7F3653BEF6702C3F2305DF9BF778" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeStatementAbstract_880FF0A5813E5562D17CF868EE0E2471_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_880FF0A5813E5562D17CF868EE0E2471" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_880FF0A5813E5562D17CF868EE0E2471" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementTable_1373CD23DE60E794659AF868EE0F66AE_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_1373CD23DE60E794659AF868EE0F66AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:label id="lab_us-gaap_StatementTable_1373CD23DE60E794659AF868EE0F66AE_label_en-US" xlink:label="lab_us-gaap_StatementTable_1373CD23DE60E794659AF868EE0F66AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_1373CD23DE60E794659AF868EE0F66AE" xlink:type="locator"/>
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<link:label id="lab_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Product Or Service </link:label>
<link:label id="lab_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product and Service [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A" xlink:to="lab_srt_ProductOrServiceAxis_899A858BE2FEF0A1ACB8F868EE0F626A" xlink:type="arc"/>
<link:label id="lab_srt_ProductsAndServicesDomain_1651C556674C98E2D2A9F868EE0F7289_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_1651C556674C98E2D2A9F868EE0F7289" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Products And Services </link:label>
<link:label id="lab_srt_ProductsAndServicesDomain_1651C556674C98E2D2A9F868EE0F7289_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_1651C556674C98E2D2A9F868EE0F7289" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product and Service [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_1651C556674C98E2D2A9F868EE0F7289" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492_terseLabel_en-US" xlink:label="lab_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goods </link:label>
<link:label id="lab_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492_label_en-US" xlink:label="lab_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductMember" xlink:label="loc_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492" xlink:to="lab_us-gaap_ProductMember_44C8495827F84AD97D62F868EE0F6492" xlink:type="arc"/>
<link:label id="lab_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD_terseLabel_en-US" xlink:label="lab_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Services </link:label>
<link:label id="lab_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD_label_en-US" xlink:label="lab_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Service [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ServiceMember" xlink:label="loc_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD" xlink:to="lab_us-gaap_ServiceMember_800E5D2B5156C11778C5F868EE103BDD" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:label id="lab_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568" xlink:to="lab_us-gaap_StatementLineItems_E720B9B1E23404F181E8F868EE109568" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenuesAbstract_B90303C5DB9CA1208AE8F868EE1083BA_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_B90303C5DB9CA1208AE8F868EE1083BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net sales: </link:label>
<link:label id="lab_us-gaap_RevenuesAbstract_B90303C5DB9CA1208AE8F868EE1083BA_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_B90303C5DB9CA1208AE8F868EE1083BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenues [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_B90303C5DB9CA1208AE8F868EE1083BA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_617E726F2BAD7E832237F868EE117DAC_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_617E726F2BAD7E832237F868EE117DAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost of sales: </link:label>
<link:label id="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_617E726F2BAD7E832237F868EE117DAC_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSoldAbstract_617E726F2BAD7E832237F868EE117DAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Goods and Services Sold [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSoldAbstract" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldAbstract_617E726F2BAD7E832237F868EE117DAC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingExpensesAbstract_FCAC2113BD4E0AF6F4BBF868EE11C516_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_FCAC2113BD4E0AF6F4BBF868EE11C516" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating expenses: </link:label>
<link:label id="lab_us-gaap_OperatingExpensesAbstract_FCAC2113BD4E0AF6F4BBF868EE11C516_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_FCAC2113BD4E0AF6F4BBF868EE11C516" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Expenses [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_FCAC2113BD4E0AF6F4BBF868EE11C516" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_F7528DD82B186C9DCEDAF868EE12EE6F_negatedLabel_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_F7528DD82B186C9DCEDAF868EE12EE6F" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Selling, general and administrative expenses </link:label>
<link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_F7528DD82B186C9DCEDAF868EE12EE6F_label_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_F7528DD82B186C9DCEDAF868EE12EE6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Selling, General and Administrative Expense </link:label>
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<link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_83CB1F462631F7C6A449F868EE121034_negatedLabel_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_83CB1F462631F7C6A449F868EE121034" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Engineering expenses </link:label>
<link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_83CB1F462631F7C6A449F868EE121034_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_83CB1F462631F7C6A449F868EE121034" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Research and Development Expense </link:label>
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<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_134235915493908B76ACF868EE129D76_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_134235915493908B76ACF868EE129D76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Intangible Assets </link:label>
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<link:label id="lab_us-gaap_OperatingExpenses_02064C595CE0EEFC370AF868EE12A638_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_02064C595CE0EEFC370AF868EE12A638" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US"> Total operating expenses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_02064C595CE0EEFC370AF868EE12A638" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_37ABDA4971815DE8F44BF868EE121887_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_37ABDA4971815DE8F44BF868EE121887" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other income and expenses: </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_614953F3E7B790089D1E43C818B4B3AB_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_FCA46586CC1A58A1AF263D20AB9DFB3A" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance (in shares) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_FCA46586CC1A58A1AF263D20AB9DFB3A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_6801183BBE7637964FAC43C818B4059D_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_559963A5F85C5446850BA0E871B3D653" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Exercisable at period end (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_6801183BBE7637964FAC43C818B4059D_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_559963A5F85C5446850BA0E871B3D653" 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, Options, Exercisable, Number </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_559963A5F85C5446850BA0E871B3D653" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_913F1C78C696211EEA5D43C818C42245_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_FCB0CD7EB9BB513F92FB3CB9DEAA8F89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted Average Exercise Price </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_913F1C78C696211EEA5D43C818C42245_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_FCB0CD7EB9BB513F92FB3CB9DEAA8F89" 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, Options, Outstanding, Weighted Average Exercise Price [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_FCB0CD7EB9BB513F92FB3CB9DEAA8F89" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_BB11B1F2312F572EE2FD43C818C4780E_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_07B4F489D7885954AAC7D28AEF971C7C" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning balance (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_BB11B1F2312F572EE2FD43C818C4780E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_07B4F489D7885954AAC7D28AEF971C7C" 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, Options, Outstanding, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_07B4F489D7885954AAC7D28AEF971C7C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5E128D9B85A289AA27AB43C818C45849_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5A5A8F640F9956668389C6B9750CF3AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Granted (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5E128D9B85A289AA27AB43C818C45849_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5A5A8F640F9956668389C6B9750CF3AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5A5A8F640F9956668389C6B9750CF3AD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_0EC7EF17962526A68F7643C818C40128_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4791164C916058298415512AAABCF8B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Exercised (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_0EC7EF17962526A68F7643C818C40128_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4791164C916058298415512AAABCF8B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4791164C916058298415512AAABCF8B7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4791164C916058298415512AAABCF8B7" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4791164C916058298415512AAABCF8B7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_493416A96652045C9C5A43C818C40A9F_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_A3D1C3A334D75C4C98CD6BFB1F9CF2D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Canceled (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_493416A96652045C9C5A43C818C40A9F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_A3D1C3A334D75C4C98CD6BFB1F9CF2D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_A3D1C3A334D75C4C98CD6BFB1F9CF2D9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_A3D1C3A334D75C4C98CD6BFB1F9CF2D9" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_A3D1C3A334D75C4C98CD6BFB1F9CF2D9" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3731C6DEDACDD71D8D3543C818C4E2B3_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_37961073294F519DA31DC6FBF4163D6E" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance (in dollars per share) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_37961073294F519DA31DC6FBF4163D6E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_75D1EF15117E571FFF1B43C818C4C3B6_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_A42AE5A8F6425A54A2E6BD20C81C854C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Exercisable (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_75D1EF15117E571FFF1B43C818C4C3B6_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_A42AE5A8F6425A54A2E6BD20C81C854C" 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, Options, Exercisable, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_A42AE5A8F6425A54A2E6BD20C81C854C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_A42AE5A8F6425A54A2E6BD20C81C854C" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_A42AE5A8F6425A54A2E6BD20C81C854C" xlink:type="arc"/>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_F9CAB51A7CAADB2F0D0343C818C44F21_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_1F42910705CD59FFA8FB3CEE7B204009" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted Average Remaining Contractual Life </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_F9CAB51A7CAADB2F0D0343C818C44F21_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_1F42910705CD59FFA8FB3CEE7B204009" 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 Options Weighted Average Remaining Contractual Term [Abstract] </link:label>
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<link:loc xlink:href="wab-20190930.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_1F42910705CD59FFA8FB3CEE7B204009" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_70D7A005C26C923CCEE243C818C4D2CA_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_4118EDD4D8E75503B455E741D6F93EE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Outstanding, weighted average remaining contractual life (in years) </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_70D7A005C26C923CCEE243C818C4D2CA_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_4118EDD4D8E75503B455E741D6F93EE1" 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, Options, Outstanding, Weighted Average Remaining Contractual Term </link:label>
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<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_A1981B95DC3DC666CE7F43C818C4A80C_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_FEA69BC573DA5EDE869855C61D6C20AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Exercisable weighted average remaining contractual life (in years) </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_A1981B95DC3DC666CE7F43C818C4A80C_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_FEA69BC573DA5EDE869855C61D6C20AE" 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, Options, Exercisable, Weighted Average Remaining Contractual Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_FEA69BC573DA5EDE869855C61D6C20AE" xlink:type="locator"/>
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<link:label id="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_B23CF620591E285AAA4A43C818C44973_terseLabel_en-US" xlink:label="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_BCE4A07DE96E5788887779CEEF2B5ADD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Aggregate Intrinsic Value </link:label>
<link:label id="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_B23CF620591E285AAA4A43C818C44973_label_en-US" xlink:label="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_BCE4A07DE96E5788887779CEEF2B5ADD" 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, Nonvested, Aggregate Intrinsic Value [Roll Forward] </link:label>
<link:label id="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_B23CF620591E285AAA4A43C818C44973_documentation_en-US" xlink:label="lab_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_BCE4A07DE96E5788887779CEEF2B5ADD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Nonvested, Aggregate Intrinsic Value [Roll Forward] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward" xlink:label="loc_wab_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsNonvestedAggregateIntrinsicValueRollForward_BCE4A07DE96E5788887779CEEF2B5ADD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_F14AFAC400CC0EBC828143C818C460D9_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_B1C6CB22BDB156F9BDA3D40D9B959F83" 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_F14AFAC400CC0EBC828143C818C460D9_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_B1C6CB22BDB156F9BDA3D40D9B959F83" 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, Options, Outstanding, Intrinsic Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_B1C6CB22BDB156F9BDA3D40D9B959F83" xlink:type="locator"/>
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<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_D993BDD9301DC233D9F343C818C4A337_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_400F633178345447B034382FC9C764DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Granted </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_D993BDD9301DC233D9F343C818C4A337_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_400F633178345447B034382FC9C764DA" 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 Options Granted Intrinsic Value </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_D993BDD9301DC233D9F343C818C4A337_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_400F633178345447B034382FC9C764DA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intrinsic value of granted options for the period presented. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedIntrinsicValue_400F633178345447B034382FC9C764DA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_D69A7EBE5138018DF82943C818C45DE5_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_14B20F69DDFC510897DB5AC508A5A90F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Exercised </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_D69A7EBE5138018DF82943C818C45DE5_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_14B20F69DDFC510897DB5AC508A5A90F" 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, Options, Exercises in Period, Intrinsic Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_14B20F69DDFC510897DB5AC508A5A90F" xlink:type="locator"/>
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<link:label id="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_20EC63A76E87ECEF789543C818C4F4DC_negatedTerseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_BFEC15735AC75452B2BAD45FCEAAAE49" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Canceled </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_20EC63A76E87ECEF789543C818C4F4DC_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_BFEC15735AC75452B2BAD45FCEAAAE49" 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, Options, Canceled, Intrinsic Value </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_20EC63A76E87ECEF789543C818C4F4DC_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_BFEC15735AC75452B2BAD45FCEAAAE49" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share Based Compensation Arrangement by Share-based Payment Award, Options, Canceled, Intrinsic Value </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue" xlink:label="loc_wab_ShareBasedCompensationArrangementbySharebasedPaymentAwardOptionsCanceledIntrinsicValue_BFEC15735AC75452B2BAD45FCEAAAE49" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_6B1F0ED87969797BAFD243C818C4590B_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_513EC9F100435C44BC9C5B7DACD74112" 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_513EC9F100435C44BC9C5B7DACD74112" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_513EC9F100435C44BC9C5B7DACD74112" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_513EC9F100435C44BC9C5B7DACD74112" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_73830C20AD5F3691EA5D43C818C4734E_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_40CA1400E8775BF29C7CCAE35836080B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Exercisable </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_73830C20AD5F3691EA5D43C818C4734E_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_40CA1400E8775BF29C7CCAE35836080B" 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, Options, Exercisable, Intrinsic Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_40CA1400E8775BF29C7CCAE35836080B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProductWarrantiesDisclosuresAbstract_7DC2340CDF1AE8AE1F93DD32DCB012F8_label_en-US" xlink:label="lab_us-gaap_ProductWarrantiesDisclosuresAbstract_B51D7E5E58545B5C9DA3ED51A201B8DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product Warranties Disclosures [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantiesDisclosuresAbstract" xlink:label="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B51D7E5E58545B5C9DA3ED51A201B8DB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProductWarrantyDisclosureTextBlock_9D926E4C16A32F549AC2DD32DCB00003_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyDisclosureTextBlock_850F212CE50B5378BEE49E95137C889D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warranties </link:label>
<link:label id="lab_us-gaap_ProductWarrantyDisclosureTextBlock_9D926E4C16A32F549AC2DD32DCB00003_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyDisclosureTextBlock_850F212CE50B5378BEE49E95137C889D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product Warranty Disclosure [Text Block] </link:label>
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<link:label id="lab_us-gaap_AccountingPoliciesAbstract_E18F028402D57B8F1A2A12E6A20D4C51_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_E18F028402D57B8F1A2A12E6A20D4C51" 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_E18F028402D57B8F1A2A12E6A20D4C51" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_32DB0B597E532DFCAAB712E6A20EDC9E_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_32DB0B597E532DFCAAB712E6A20EDC9E" 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_32DB0B597E532DFCAAB712E6A20EDC9E_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_32DB0B597E532DFCAAB712E6A20EDC9E" 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_32DB0B597E532DFCAAB712E6A20EDC9E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_32DB0B597E532DFCAAB712E6A20EDC9E" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_32DB0B597E532DFCAAB712E6A20EDC9E" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_CBA7F9E1852C1B3B7D0212E6A20EACBF_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_CBA7F9E1852C1B3B7D0212E6A20EACBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue Recognition </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_CBA7F9E1852C1B3B7D0212E6A20EACBF_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_CBA7F9E1852C1B3B7D0212E6A20EACBF" 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>
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<link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_07D91DB1B2B0C4E5C21812E6A20EF4D2_terseLabel_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_07D91DB1B2B0C4E5C21812E6A20EF4D2" 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_07D91DB1B2B0C4E5C21812E6A20EF4D2_label_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_07D91DB1B2B0C4E5C21812E6A20EF4D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification, Policy [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_UseOfEstimates_CF96392B695745D5446612E6A20E034D_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_CF96392B695745D5446612E6A20E034D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Use of Estimates </link:label>
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<link:label id="lab_us-gaap_DerivativesPolicyTextBlock_BCF48BA493041BF8CF0E12E6A20E8B37_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_BCF48BA493041BF8CF0E12E6A20E8B37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financial Derivatives and Hedging Activities </link:label>
<link:label id="lab_us-gaap_DerivativesPolicyTextBlock_BCF48BA493041BF8CF0E12E6A20E8B37_label_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_BCF48BA493041BF8CF0E12E6A20E8B37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivatives, Policy [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_8C3DEA8DD21E56E00D0812E6A20FF9EC_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_8C3DEA8DD21E56E00D0812E6A20FF9EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign Currency Translation </link:label>
<link:label id="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_8C3DEA8DD21E56E00D0812E6A20FF9EC_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_8C3DEA8DD21E56E00D0812E6A20FF9EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Foreign Currency Transactions and Translations 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_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:label="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_8C3DEA8DD21E56E00D0812E6A20FF9EC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_D8642BB81FF5A648A95312E6A20FAD3E_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_D8642BB81FF5A648A95312E6A20FAD3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recently Issued Accounting Pronouncements </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_D8642BB81FF5A648A95312E6A20FAD3E_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_D8642BB81FF5A648A95312E6A20FAD3E" 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>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_D8642BB81FF5A648A95312E6A20FAD3E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_016FF7D1A528D993B90112E6A20F7A84_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_016FF7D1A528D993B90112E6A20F7A84" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income </link:label>
<link:label id="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_016FF7D1A528D993B90112E6A20F7A84_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_016FF7D1A528D993B90112E6A20F7A84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income, 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_ComprehensiveIncomePolicyPolicyTextBlock" xlink:label="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_016FF7D1A528D993B90112E6A20F7A84" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SegmentReportingAbstract_D77DC1601EFE7267BE9A00A5FC7CFACC_label_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract_8550798BCC055DFF93C7A5B8C0685DD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_8550798BCC055DFF93C7A5B8C0685DD1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_EBFF17D9C245942BA5EA00A5FC7CB8C4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_A8B9616557CF5BBFA007A115EE72F9FE" 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_EBFF17D9C245942BA5EA00A5FC7CB8C4_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_A8B9616557CF5BBFA007A115EE72F9FE" 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_wab_CorporateAndEliminationsMember_146930B065F0C4BA295400A5FC7D4915_terseLabel_en-US" xlink:label="lab_wab_CorporateAndEliminationsMember_33E2DDBBC79559A18204718B77E7D31D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate Activities and Elimination </link:label>
<link:label id="lab_wab_CorporateAndEliminationsMember_146930B065F0C4BA295400A5FC7D4915_label_en-US" xlink:label="lab_wab_CorporateAndEliminationsMember_33E2DDBBC79559A18204718B77E7D31D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate And Eliminations [Member] </link:label>
<link:label id="lab_wab_CorporateAndEliminationsMember_146930B065F0C4BA295400A5FC7D4915_documentation_en-US" xlink:label="lab_wab_CorporateAndEliminationsMember_33E2DDBBC79559A18204718B77E7D31D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate And Eliminations [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_CorporateAndEliminationsMember" xlink:label="loc_wab_CorporateAndEliminationsMember_33E2DDBBC79559A18204718B77E7D31D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingSegmentsMember_9C001C3B1E8AEB9953CD00A5FC7D5BBD_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_086F4495FBBA568098B45E76F3004471" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Segments </link:label>
<link:label id="lab_us-gaap_OperatingSegmentsMember_9C001C3B1E8AEB9953CD00A5FC7D5BBD_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_086F4495FBBA568098B45E76F3004471" 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_us-gaap_StatementBusinessSegmentsAxis_657CDC241176CE87A66200A5FC7DD292_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_E8A1B49E1CDC578B84E6A7128AADF39F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>
<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_657CDC241176CE87A66200A5FC7DD292_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_E8A1B49E1CDC578B84E6A7128AADF39F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_E8A1B49E1CDC578B84E6A7128AADF39F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SegmentDomain_98EBE921B3EE9EF4389400A5FC7D1703_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_B7F2E6825CD85D47AFB6F805D75C26AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Domain] </link:label>
<link:label id="lab_us-gaap_SegmentDomain_98EBE921B3EE9EF4389400A5FC7D1703_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_B7F2E6825CD85D47AFB6F805D75C26AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Domain] </link:label>
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<link:label id="lab_wab_FreightSegmentMember_49CA4E9636C98708525600A5FC7ECDD8_terseLabel_en-US" xlink:label="lab_wab_FreightSegmentMember_03657221C8715F53B8274193FB439F18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Freight Segment </link:label>
<link:label id="lab_wab_FreightSegmentMember_49CA4E9636C98708525600A5FC7ECDD8_label_en-US" xlink:label="lab_wab_FreightSegmentMember_03657221C8715F53B8274193FB439F18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Freight Segment [Member] </link:label>
<link:label id="lab_wab_FreightSegmentMember_49CA4E9636C98708525600A5FC7ECDD8_documentation_en-US" xlink:label="lab_wab_FreightSegmentMember_03657221C8715F53B8274193FB439F18" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Freight Segment </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_FreightSegmentMember" xlink:label="loc_wab_FreightSegmentMember_03657221C8715F53B8274193FB439F18" xlink:type="locator"/>
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<link:label id="lab_wab_TransitSegmentMember_4725529A422A7BB5EA2100A5FC7E544A_terseLabel_en-US" xlink:label="lab_wab_TransitSegmentMember_4AF2C3F062E85AB98A73EDF723D5CA5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Transit Segment </link:label>
<link:label id="lab_wab_TransitSegmentMember_4725529A422A7BB5EA2100A5FC7E544A_label_en-US" xlink:label="lab_wab_TransitSegmentMember_4AF2C3F062E85AB98A73EDF723D5CA5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Transit Segment [Member] </link:label>
<link:label id="lab_wab_TransitSegmentMember_4725529A422A7BB5EA2100A5FC7E544A_documentation_en-US" xlink:label="lab_wab_TransitSegmentMember_4AF2C3F062E85AB98A73EDF723D5CA5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Transit segment. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_TransitSegmentMember" xlink:label="loc_wab_TransitSegmentMember_4AF2C3F062E85AB98A73EDF723D5CA5B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_1BD29687969C416DD17600A5FC7EDC9E_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_27725D0F7C9C50538C70709E276DB322" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment Reporting Information [Line Items] </link:label>
<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_1BD29687969C416DD17600A5FC7EDC9E_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_27725D0F7C9C50538C70709E276DB322" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting Information [Line Items] </link:label>
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<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2157DD9CE0E39C6E8D5E00A5FC7E46AC_verboseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6F72ABA71B7E5824B68C628D9C605707" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total sales </link:label>
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<link:label id="lab_us-gaap_OperatingIncomeLoss_1B27E650CEE48CD3332D00A5FC7F1548_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_0B18E96C64CF528280754F2AA5F4AE8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income (loss) from operations </link:label>
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<link:label id="lab_wab_AnnaxGmbHMember_DFE26E90DA94D0C67E838CEF844D04C4_terseLabel_en-US" xlink:label="lab_wab_AnnaxGmbHMember_DFE26E90DA94D0C67E838CEF844D04C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Annax </link:label>
<link:label id="lab_wab_AnnaxGmbHMember_DFE26E90DA94D0C67E838CEF844D04C4_label_en-US" xlink:label="lab_wab_AnnaxGmbHMember_DFE26E90DA94D0C67E838CEF844D04C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Annax GmbH [Member] </link:label>
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<link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_62844530CC8C92EEA8508CEF844E4810_totalLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_62844530CC8C92EEA8508CEF844E4810" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total assets acquired </link:label>
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<link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_DE3A38BA7C2B5B4DA1D48CEF844E2645_totalLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_DE3A38BA7C2B5B4DA1D48CEF844E2645" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net assets acquired </link:label>
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<link:label id="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_A833F2A9E58522E9E9290C313B3054C2_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_2D0AA230E57950D8B0E2C0C59DF13A8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net sales </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_A833F2A9E58522E9E9290C313B3054C2_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionsProFormaRevenue_2D0AA230E57950D8B0E2C0C59DF13A8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Pro Forma Revenue </link:label>
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<link:label id="lab_wab_BusinessAcquisitionProFormaGrossProfit_C6F9EE24FB3145FD01940C313B305AAC_terseLabel_en-US" xlink:label="lab_wab_BusinessAcquisitionProFormaGrossProfit_F6F03C9BCB1C5C9CB344A70A7CE29AA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gross profit </link:label>
<link:label id="lab_wab_BusinessAcquisitionProFormaGrossProfit_C6F9EE24FB3145FD01940C313B305AAC_label_en-US" xlink:label="lab_wab_BusinessAcquisitionProFormaGrossProfit_F6F03C9BCB1C5C9CB344A70A7CE29AA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition Pro Forma Gross Profit </link:label>
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<link:label id="lab_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C" xlink:to="lab_us-gaap_DebtInstrumentTable_9FD5AEE6BE3A0B415DB4130DB786547C" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Axis] </link:label>
<link:label id="lab_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_E154D3C34FCD5C59C65A130DB7867863" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Domain] </link:label>
<link:label id="lab_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_4FE9C8DD3056F0BB2655130DB787E59B" xlink:type="arc"/>
<link:label id="lab_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Senior Notes </link:label>
<link:label id="lab_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5_label_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Notes [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5" xlink:to="lab_us-gaap_SeniorNotesMember_79FEB9261615B9D5D2EE130DB787D1B5" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Line of Credit </link:label>
<link:label id="lab_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line 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_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5" xlink:to="lab_us-gaap_LineOfCreditMember_E3B742342B6FF7F1D5CF130DB7872CB5" xlink:type="arc"/>
<link:label id="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79_terseLabel_en-US" xlink:label="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Alternative Rate </link:label>
<link:label id="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79_label_en-US" xlink:label="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Alternative Rate [Member] </link:label>
<link:label id="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79_documentation_en-US" xlink:label="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Alternative rate. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_AlternativeRateMember" xlink:label="loc_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79" xlink:to="lab_wab_AlternativeRateMember_E91F6BFF0BDEB94615A6130DB7888B79" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Axis] </link:label>
<link:label id="lab_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57" xlink:to="lab_us-gaap_ShortTermDebtTypeAxis_79E24C5D9D0FB21DC21C130DB788DB57" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Domain] </link:label>
<link:label id="lab_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065" xlink:to="lab_us-gaap_ShortTermDebtTypeDomain_0A1C2B6FACD29023B6DA130DB788F065" xlink:type="arc"/>
<link:label id="lab_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A_terseLabel_en-US" xlink:label="lab_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Bridge Loan </link:label>
<link:label id="lab_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A_label_en-US" xlink:label="lab_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Bridge Loan [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BridgeLoanMember" xlink:label="loc_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A" xlink:to="lab_us-gaap_BridgeLoanMember_786BA59587BA5C7126E9130DB788772A" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentAxis_DEA5289507E9606C36BD130DB788C579_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_DEA5289507E9606C36BD130DB788C579" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument </link:label>
<link:label id="lab_us-gaap_DebtInstrumentAxis_DEA5289507E9606C36BD130DB788C579_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_DEA5289507E9606C36BD130DB788C579" 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_DEA5289507E9606C36BD130DB788C579" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_DEA5289507E9606C36BD130DB788C579" xlink:to="lab_us-gaap_DebtInstrumentAxis_DEA5289507E9606C36BD130DB788C579" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_D11131CA6BBC4B6DE415130DB7895131_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_D11131CA6BBC4B6DE415130DB7895131" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name </link:label>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_D11131CA6BBC4B6DE415130DB7895131_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_D11131CA6BBC4B6DE415130DB7895131" 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_D11131CA6BBC4B6DE415130DB7895131" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D11131CA6BBC4B6DE415130DB7895131" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_D11131CA6BBC4B6DE415130DB7895131" xlink:type="arc"/>
<link:label id="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8_verboseLabel_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Floating Rate Notes, due 2021 </link:label>
<link:label id="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8_label_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Floating Rate Notes Due 2021 [Member] </link:label>
<link:label id="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8_documentation_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Floating Rate Notes Due 2021 [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_FloatingRateNotesDue2021Member" xlink:label="loc_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8" xlink:to="lab_wab_FloatingRateNotesDue2021Member_EB8FFAC4662662949377130DB7896AB8" xlink:type="arc"/>
<link:label id="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E_verboseLabel_en-US" xlink:label="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 4.15% Senior Notes, due 2024 </link:label>
<link:label id="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E_label_en-US" xlink:label="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2024 [Member] </link:label>
<link:label id="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E_documentation_en-US" xlink:label="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2024 [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SeniorNotesDue2024Member" xlink:label="loc_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E" xlink:to="lab_wab_SeniorNotesDue2024Member_6C02EB9211399AA98206130DB789460E" xlink:type="arc"/>
<link:label id="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058_verboseLabel_en-US" xlink:label="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 4.70% Senior Notes, due 2028 </link:label>
<link:label id="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058_label_en-US" xlink:label="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2028 [Member] </link:label>
<link:label id="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058_documentation_en-US" xlink:label="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2028 [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SeniorNotesDue2028Member" xlink:label="loc_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058" xlink:to="lab_wab_SeniorNotesDue2028Member_0258DCA5D9C65195E9E9130DB7894058" xlink:type="arc"/>
<link:label id="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388_terseLabel_en-US" xlink:label="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 3.45% Senior Notes, due 2026 </link:label>
<link:label id="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388_label_en-US" xlink:label="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 3.45 Percent Senior Notes Due Two Thousand and Twenty Six [Member] </link:label>
<link:label id="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388_documentation_en-US" xlink:label="lab_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 3.45 Percent Senior Notes Due Two Thousand and Twenty Six [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember" xlink:label="loc_wab_A3.45PercentSeniorNotesDueTwoThousandandTwentySixMember_05B56E73428A0AC242EA130DB7893388" xlink:type="locator"/>
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<link:label id="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01_terseLabel_en-US" xlink:label="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 4.375% Senior Notes, due 2023 </link:label>
<link:label id="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01_label_en-US" xlink:label="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 4.375 Percent Senior Notes Due Twenty Thousand and Twenty Three [Member] </link:label>
<link:label id="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01_documentation_en-US" xlink:label="lab_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 4.375 Percent Senior Notes Due Twenty Thousand and Twenty Three [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember" xlink:label="loc_wab_A4.375PercentSeniorNotesDueTwentyThousandandTwentyThreeMember_5D947AB008BFD938FFE7130DB78AAA01" xlink:type="locator"/>
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<link:label id="lab_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824_terseLabel_en-US" xlink:label="lab_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2028 and Senior Notes </link:label>
<link:label id="lab_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824_label_en-US" xlink:label="lab_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2028 And Senior Notes [Member] </link:label>
<link:label id="lab_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824_documentation_en-US" xlink:label="lab_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2028 and Senior Notes [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SeniorNotesDue2028AndSeniorNotesMember" xlink:label="loc_wab_SeniorNotesDue2028AndSeniorNotesMember_004412789A79502CD47F130DB78A2824" xlink:type="locator"/>
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<link:label id="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685_terseLabel_en-US" xlink:label="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2018 Refinancing Credit Agreement </link:label>
<link:label id="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685_label_en-US" xlink:label="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand and Eighteen Refinancing Agreement [Member] </link:label>
<link:label id="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685_documentation_en-US" xlink:label="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two Thousand and Eighteen Refinancing Agreement [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_TwoThousandandEighteenRefinancingAgreementMember" xlink:label="loc_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685" xlink:to="lab_wab_TwoThousandandEighteenRefinancingAgreementMember_E94958E52602E574917F130DB78A0685" xlink:type="arc"/>
<link:label id="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0_terseLabel_en-US" xlink:label="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2016 Refinancing Credit Agreement </link:label>
<link:label id="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0_label_en-US" xlink:label="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Sixteen Refinancing Credit Agreement [Member] </link:label>
<link:label id="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0_documentation_en-US" xlink:label="lab_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two Thousand Sixteen Refinancing Credit Agreement [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_TwoThousandSixteenRefinancingCreditAgreementMember" xlink:label="loc_wab_TwoThousandSixteenRefinancingCreditAgreementMember_76F48E665730D729C1D9130DB78A93E0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CreditFacilityAxis_00F30D76D2F9837D4D5A130DB78A615A_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_00F30D76D2F9837D4D5A130DB78A615A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Facility </link:label>
<link:label id="lab_us-gaap_CreditFacilityAxis_00F30D76D2F9837D4D5A130DB78A615A_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_00F30D76D2F9837D4D5A130DB78A615A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Facility [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_00F30D76D2F9837D4D5A130DB78A615A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit Facility </link:label>
<link:label id="lab_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Facility [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF" xlink:to="lab_us-gaap_CreditFacilityDomain_BB57F573813C97728ABB130DB78A74CF" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revolving Credit Facility </link:label>
<link:label id="lab_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revolving Credit Facility [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_E1786C7DAABEA1C4B816130DB78BEFC4" xlink:type="arc"/>
<link:label id="lab_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Letter of Credit </link:label>
<link:label id="lab_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Letter 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_LetterOfCreditMember" xlink:label="loc_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9" xlink:to="lab_us-gaap_LetterOfCreditMember_F7BC0961841F428A1910130DB78B7AA9" xlink:type="arc"/>
<link:label id="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425_terseLabel_en-US" xlink:label="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Term Loan </link:label>
<link:label id="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425_label_en-US" xlink:label="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Term Loan [Member] </link:label>
<link:label id="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425_documentation_en-US" xlink:label="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Term Loan [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_TermLoanMember" xlink:label="loc_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425" xlink:to="lab_wab_TermLoanMember_0103FB3B22AD630B6DBC130DB78B1425" xlink:type="arc"/>
<link:label id="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765_terseLabel_en-US" xlink:label="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Delayed Draw Term Loan </link:label>
<link:label id="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765_label_en-US" xlink:label="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Delayed Draw Term Loan [Member] </link:label>
<link:label id="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765_documentation_en-US" xlink:label="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Delayed Draw Term Loan [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DelayedDrawTermLoanMember" xlink:label="loc_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765" xlink:to="lab_wab_DelayedDrawTermLoanMember_EE43E38496647EE67819130DB78BA765" xlink:type="arc"/>
<link:label id="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9_terseLabel_en-US" xlink:label="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Swing Line Sub Facility </link:label>
<link:label id="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9_label_en-US" xlink:label="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Swing Line Sub Facility [Member] </link:label>
<link:label id="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9_documentation_en-US" xlink:label="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Swing Line Sub Facility [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SwingLineSubFacilityMember" xlink:label="loc_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9" xlink:to="lab_wab_SwingLineSubFacilityMember_59389AEAC8E9CD3C3E08130DB78BD0A9" xlink:type="arc"/>
<link:label id="lab_us-gaap_VariableRateAxis_4B228E3F0AE40BC980D4130DB78B5997_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_4B228E3F0AE40BC980D4130DB78B5997" 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_4B228E3F0AE40BC980D4130DB78B5997_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_4B228E3F0AE40BC980D4130DB78B5997" 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_4B228E3F0AE40BC980D4130DB78B5997" xlink:type="locator"/>
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<link:label id="lab_us-gaap_VariableRateDomain_04DC5A3940D94B73AFE8130DB78CE188_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_04DC5A3940D94B73AFE8130DB78CE188" 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_04DC5A3940D94B73AFE8130DB78CE188_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_04DC5A3940D94B73AFE8130DB78CE188" 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_04DC5A3940D94B73AFE8130DB78CE188" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FederalFundsEffectiveSwapRateMember_BED21E99FF54433F8592130DB78CE211_terseLabel_en-US" xlink:label="lab_us-gaap_FederalFundsEffectiveSwapRateMember_BED21E99FF54433F8592130DB78CE211" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Federal Funds Effective Rate </link:label>
<link:label id="lab_us-gaap_FederalFundsEffectiveSwapRateMember_BED21E99FF54433F8592130DB78CE211_label_en-US" xlink:label="lab_us-gaap_FederalFundsEffectiveSwapRateMember_BED21E99FF54433F8592130DB78CE211" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fed Funds Effective Rate Overnight Index Swap Rate [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_BED21E99FF54433F8592130DB78CE211" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0_terseLabel_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> LIBOR Rate </link:label>
<link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0_label_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> London Interbank Offered Rate (LIBOR) [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0" xlink:to="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_932670EF419D1B32E43A130DB78C35F0" xlink:type="arc"/>
<link:label id="lab_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D_terseLabel_en-US" xlink:label="lab_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Base Rate </link:label>
<link:label id="lab_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D_label_en-US" xlink:label="lab_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Base Rate [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BaseRateMember" xlink:label="loc_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D" xlink:to="lab_us-gaap_BaseRateMember_E3078D3CBF0046C93D52130DB78C700D" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE_terseLabel_en-US" xlink:label="lab_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Forward Starting Interest Rate Swap Agreement </link:label>
<link:label id="lab_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE_label_en-US" xlink:label="lab_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Rate Swap [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE" xlink:to="lab_us-gaap_InterestRateSwapMember_ED7490ED42B58B646557130DB78EE8DE" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentLineItems_2007F8064699E8C0354A130DB78EA96D_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_2007F8064699E8C0354A130DB78EA96D" 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_2007F8064699E8C0354A130DB78EA96D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_2007F8064699E8C0354A130DB78EA96D" 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_2007F8064699E8C0354A130DB78EA96D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2007F8064699E8C0354A130DB78EA96D" xlink:to="lab_us-gaap_DebtInstrumentLineItems_2007F8064699E8C0354A130DB78EA96D" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_A8F758FC9713F3F6437F130DB78EE338_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_A8F758FC9713F3F6437F130DB78EE338" 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_A8F758FC9713F3F6437F130DB78EE338_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_A8F758FC9713F3F6437F130DB78EE338" 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_A8F758FC9713F3F6437F130DB78EE338" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_A8F758FC9713F3F6437F130DB78EE338" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_A8F758FC9713F3F6437F130DB78EE338" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt instrument, term </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06" xlink:to="lab_us-gaap_DebtInstrumentTerm_E0D0E980C137FBAB2929130DB78FDC06" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt issuance price (as a percent) </link:label>
<link:label id="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Redemption Price, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPricePercentage_8F6D5EBFD0C6D17267F9130DB78F67E8" xlink:type="arc"/>
<link:label id="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Floating interest rate (as a percent) </link:label>
<link:label id="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053_label_en-US" xlink:label="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Floating Rate, Percentage </link:label>
<link:label id="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053_documentation_en-US" xlink:label="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Floating Rate, Percentage </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentFloatingRatePercentage" xlink:label="loc_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053" xlink:to="lab_wab_DebtInstrumentFloatingRatePercentage_DDEA3B6F1DD454E007241317AF6FF053" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_05B1F9467FFD6AA2BB24130DB78F454D_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_05B1F9467FFD6AA2BB24130DB78F454D" 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_05B1F9467FFD6AA2BB24130DB78F454D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_05B1F9467FFD6AA2BB24130DB78F454D" 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_05B1F9467FFD6AA2BB24130DB78F454D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_05B1F9467FFD6AA2BB24130DB78F454D" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_05B1F9467FFD6AA2BB24130DB78F454D" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredFinanceCostsGross_43F14E575ADF046BAD3C130DB78F1971_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_43F14E575ADF046BAD3C130DB78F1971" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred financing cost </link:label>
<link:label id="lab_us-gaap_DeferredFinanceCostsGross_43F14E575ADF046BAD3C130DB78F1971_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_43F14E575ADF046BAD3C130DB78F1971" 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_43F14E575ADF046BAD3C130DB78F1971" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsGross_43F14E575ADF046BAD3C130DB78F1971" xlink:to="lab_us-gaap_DeferredFinanceCostsGross_43F14E575ADF046BAD3C130DB78F1971" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_BBBB1EA2E8E317AEA194130DB78F2021_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_BBBB1EA2E8E317AEA194130DB78F2021" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stated interest rate (as a percent) </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_BBBB1EA2E8E317AEA194130DB78F2021_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_BBBB1EA2E8E317AEA194130DB78F2021" 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_BBBB1EA2E8E317AEA194130DB78F2021" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_BBBB1EA2E8E317AEA194130DB78F2021" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_BBBB1EA2E8E317AEA194130DB78F2021" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase in interest rate </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Increase (Decrease) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease" xlink:label="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3" xlink:to="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_5E9472B851154784380A130DB78F14D3" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revolving credit facility, amount </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40" 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>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_16EFB81841B8D728AEB5130DB790DB40" xlink:type="arc"/>
<link:label id="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60_terseLabel_en-US" xlink:label="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Uncommitted accordion feature </link:label>
<link:label id="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60_label_en-US" xlink:label="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Uncommitted Accordion Feature </link:label>
<link:label id="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60_documentation_en-US" xlink:label="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Line of Credit Uncommitted Accordion Feature </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LineofCreditUncommittedAccordionFeature" xlink:label="loc_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60" xlink:to="lab_wab_LineofCreditUncommittedAccordionFeature_C6ECE256DB6D3D32EF4B130DB790ED60" xlink:type="arc"/>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Letters of credit subject to financial covenant restrictions </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Unrestricted Cash, Maximum </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Unrestricted Cash, Maximum </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsUnrestrictedCashMaximum_F4A228E855D39AAE6004130DB790BC0C" xlink:type="locator"/>
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<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest coverage ratio </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, EBITDA to Interest Expense Ratio, Minimum </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, EBITDA to Interest Expense Ratio, Minimum </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsEBITDAtoInterestExpenseRatioMinimum_B24E688D586250F5E4AB130DB7904419" xlink:type="locator"/>
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<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Leverage ratio </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Leverage Ratio, Maximum </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Leverage Ratio, Maximum </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioMaximum_4DD41C11D1D4C7E5BAE1130DB7906AE9" xlink:type="locator"/>
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<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash consideration </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Minimum Cash Consideration Transferred in Acquisition </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Minimum Cash Consideration Transferred in Acquisition </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsMinimumCashConsiderationTransferredinAcquisition_734273D312B5D62F28CF130DB790C986" xlink:type="locator"/>
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<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maximum leverage ratio permitted </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Leverage Ratio, Three Quarters Following Acquisition, Maximum </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Leverage Ratio, Three Quarters Following Acquisition, Maximum </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioThreeQuartersFollowingAcquisitionMaximum_D0AD5017490BFA61BBD3130DB790EC06" xlink:type="arc"/>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8_terseLabel_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restrictive covenants, leverage ratio </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8_label_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Leverage Ratio, Fourth and Fifth Quarter Following Acquisition, Maximum </link:label>
<link:label id="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8_documentation_en-US" xlink:label="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Restrictive Covenants, Leverage Ratio, Fourth and Fifth Quarter Following Acquisition, Maximum </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum" xlink:label="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8" xlink:to="lab_wab_DebtInstrumentRestrictiveCovenantsLeverageRatioFourthandFifthQuarterFollowingAcquisitionMaximum_51BCD3A15B3182A88593130DB7913DF8" xlink:type="arc"/>
<link:label id="lab_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest rate on notional value (as a percent) </link:label>
<link:label id="lab_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F_label_en-US" xlink:label="lab_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative, Fixed Interest Rate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F" xlink:to="lab_us-gaap_DerivativeFixedInterestRate_6DEBA90175B1A3E19258130DB791509F" xlink:type="arc"/>
<link:label id="lab_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest rate swap agreements, notional amount </link:label>
<link:label id="lab_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56_label_en-US" xlink:label="lab_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative Liability, Notional Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilityNotionalAmount" xlink:label="loc_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56" xlink:to="lab_us-gaap_DerivativeLiabilityNotionalAmount_8300B30DFAA4318B5560130DB7910F56" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_DAD888E79C20F5FD73A2130DB791B26C_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_DAD888E79C20F5FD73A2130DB791B26C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Credit facility loan term, years </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_DAD888E79C20F5FD73A2130DB791B26C_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_DAD888E79C20F5FD73A2130DB791B26C" 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_DAD888E79C20F5FD73A2130DB791B26C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityExpirationPeriod_DAD888E79C20F5FD73A2130DB791B26C" xlink:to="lab_us-gaap_LineOfCreditFacilityExpirationPeriod_DAD888E79C20F5FD73A2130DB791B26C" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_DA1170390715C1D27A0C130DB7919975_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_DA1170390715C1D27A0C130DB7919975" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitment fee </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_DA1170390715C1D27A0C130DB7919975_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_DA1170390715C1D27A0C130DB7919975" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Commitment Fee Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_DA1170390715C1D27A0C130DB7919975" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_BD329F411122D3F8D7ECDD32DC1439B4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_84F9C09B26EF5F058BD01F43A2256107" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Summary of Preliminary Estimated Fair Values of the Assets Acquired and Liabilities Assumed at the Date of the Acquisition </link:label>
<link:label id="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_BD329F411122D3F8D7ECDD32DC1439B4_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_84F9C09B26EF5F058BD01F43A2256107" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [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_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_84F9C09B26EF5F058BD01F43A2256107" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_CE15AAEA62054209B9FCDD32DC143C0C_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_1D95447FA08A5A8BA0839399B3568EF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pro Forma Financial Information </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_CE15AAEA62054209B9FCDD32DC143C0C_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_1D95447FA08A5A8BA0839399B3568EF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Pro Forma Information [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_BusinessAcquisitionProFormaInformationTextBlock" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_1D95447FA08A5A8BA0839399B3568EF3" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_B82E7ED808058E8F405F130DB6C16FCB_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_B82E7ED808058E8F405F130DB6C16FCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effective tax rate </link:label>
<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_B82E7ED808058E8F405F130DB6C16FCB_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_B82E7ED808058E8F405F130DB6C16FCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Percent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_B82E7ED808058E8F405F130DB6C16FCB" xlink:type="locator"/>
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<link:label id="lab_wab_RemanufacturingOverhaulAndBuildMember_4C6B5DC214BA44C8C7F200A5FC775852_terseLabel_en-US" xlink:label="lab_wab_RemanufacturingOverhaulAndBuildMember_41B09637CD245F2C89E6CB89464B7C95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Remanufacturing, Overhaul & Build </link:label>
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<link:label id="lab_wab_SpecialtyProductsandElectronicsMember_4285DE522DCBA4BA652400A5FC76CC8A_terseLabel_en-US" xlink:label="lab_wab_SpecialtyProductsandElectronicsMember_50613745715254DDB9138ADD1D35EBEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Specialty Products & Electronics </link:label>
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<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2E18AFE13DCECD8CA53F12E6A205092D_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2E18AFE13DCECD8CA53F12E6A205092D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Line Items] </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2E18AFE13DCECD8CA53F12E6A205092D_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2E18AFE13DCECD8CA53F12E6A205092D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_2E18AFE13DCECD8CA53F12E6A205092D" xlink:type="locator"/>
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<link:label id="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70_terseLabel_en-US" xlink:label="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue derived from performance obligations satisfied when control passes to customer (as a percent) </link:label>
<link:label id="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70_label_en-US" xlink:label="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Percent of Revenue Derived from Performance Obligations, Transfer of Control </link:label>
<link:label id="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70_documentation_en-US" xlink:label="lab_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Revenue, Percent of Revenue Derived from Performance Obligations, Transfer of Control </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl" xlink:label="loc_wab_RevenuePercentofRevenueDerivedfromPerformanceObligationsTransferofControl_E5AF51D8016734525B0A12E6A2057F70" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_83DC5363A130A5F2C91B12E6A20654E6_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_83DC5363A130A5F2C91B12E6A20654E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncurrent contract assets </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_83DC5363A130A5F2C91B12E6A20654E6_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetNoncurrent_83DC5363A130A5F2C91B12E6A20654E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Net, Noncurrent </link:label>
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<link:label id="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_F67A6A28DE3F6D0509AC12E6A206FB88_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_F67A6A28DE3F6D0509AC12E6A206FB88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncurrent contract liabilities </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_F67A6A28DE3F6D0509AC12E6A206FB88_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_F67A6A28DE3F6D0509AC12E6A206FB88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_F67A6A28DE3F6D0509AC12E6A206FB88" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProvisionForLossOnContracts_F9E5D50F827A4DD19E8D12E6A206C86C_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForLossOnContracts_F9E5D50F827A4DD19E8D12E6A206C86C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Provisions for loss contracts </link:label>
<link:label id="lab_us-gaap_ProvisionForLossOnContracts_F9E5D50F827A4DD19E8D12E6A206C86C_label_en-US" xlink:label="lab_us-gaap_ProvisionForLossOnContracts_F9E5D50F827A4DD19E8D12E6A206C86C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Provision for Loss on Contracts </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProvisionForLossOnContracts" xlink:label="loc_us-gaap_ProvisionForLossOnContracts_F9E5D50F827A4DD19E8D12E6A206C86C" xlink:type="locator"/>
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<link:label id="lab_wab_WeightedaverageRemainingLeaseTermAbstract_82773E4CE2C66FF87D8920CFC2182958_terseLabel_en-US" xlink:label="lab_wab_WeightedaverageRemainingLeaseTermAbstract_E7C07E9EB59F5C469F46C6FDC489F1A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted-average remaining lease term (years) </link:label>
<link:label id="lab_wab_WeightedaverageRemainingLeaseTermAbstract_82773E4CE2C66FF87D8920CFC2182958_label_en-US" xlink:label="lab_wab_WeightedaverageRemainingLeaseTermAbstract_E7C07E9EB59F5C469F46C6FDC489F1A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted-average Remaining Lease Term [Abstract] </link:label>
<link:label id="lab_wab_WeightedaverageRemainingLeaseTermAbstract_82773E4CE2C66FF87D8920CFC2182958_documentation_en-US" xlink:label="lab_wab_WeightedaverageRemainingLeaseTermAbstract_E7C07E9EB59F5C469F46C6FDC489F1A2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Weighted-average Remaining Lease Term [Abstract] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_WeightedaverageRemainingLeaseTermAbstract" xlink:label="loc_wab_WeightedaverageRemainingLeaseTermAbstract_E7C07E9EB59F5C469F46C6FDC489F1A2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_37B1595367D55059CD6B20CFC21810F7_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_908B5D5429D25626A50769A9E3BA69B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating leases </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_37B1595367D55059CD6B20CFC21810F7_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_908B5D5429D25626A50769A9E3BA69B6" 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_908B5D5429D25626A50769A9E3BA69B6" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_CC2D7171BF854FE7971920CFC218F19C_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_18AB543FDF4159EBB2E7795CD7A36371" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance leases </link:label>
<link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_CC2D7171BF854FE7971920CFC218F19C_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_18AB543FDF4159EBB2E7795CD7A36371" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_18AB543FDF4159EBB2E7795CD7A36371" xlink:type="locator"/>
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<link:label id="lab_wab_WeightedaverageDiscountRateAbstract_8D53833C6D8030F1FD2A20CFC219049E_terseLabel_en-US" xlink:label="lab_wab_WeightedaverageDiscountRateAbstract_A4BC0D53E3B4505E976F09D5ABD6D72A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted-average discount rate </link:label>
<link:label id="lab_wab_WeightedaverageDiscountRateAbstract_8D53833C6D8030F1FD2A20CFC219049E_label_en-US" xlink:label="lab_wab_WeightedaverageDiscountRateAbstract_A4BC0D53E3B4505E976F09D5ABD6D72A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted-average Discount Rate [Abstract] </link:label>
<link:label id="lab_wab_WeightedaverageDiscountRateAbstract_8D53833C6D8030F1FD2A20CFC219049E_documentation_en-US" xlink:label="lab_wab_WeightedaverageDiscountRateAbstract_A4BC0D53E3B4505E976F09D5ABD6D72A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Weighted-average Discount Rate [Abstract] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_WeightedaverageDiscountRateAbstract" xlink:label="loc_wab_WeightedaverageDiscountRateAbstract_A4BC0D53E3B4505E976F09D5ABD6D72A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_90D447F66228C5D25FAB20CFC2198A26_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_BABE419C024F5327979E5498E523E97E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating leases </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_90D447F66228C5D25FAB20CFC2198A26_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_BABE419C024F5327979E5498E523E97E" 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_BABE419C024F5327979E5498E523E97E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_5EA188738B8BEA6BD61D20CFC219CECA_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_ED3354FB832B5572BCC6BE8D58070F55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance leases </link:label>
<link:label id="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_5EA188738B8BEA6BD61D20CFC219CECA_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_ED3354FB832B5572BCC6BE8D58070F55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Weighted Average Discount Rate, Percent </link:label>
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<link:label id="lab_us-gaap_StockholdersEquityNoteAbstract_D72558CCBEB8B063A3E120CFC2A639FE_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteAbstract_8ADFA4E9E4185390A9BDA0BCF47EB525" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Note [Abstract] </link:label>
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<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_9C589FF225D16067A96820CFC2A62C36_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_31D6595C5AAE5CAFBBE8E80355F1FCDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification Out Of Accumulated Other Comprehensive Income [Table] </link:label>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_9C589FF225D16067A96820CFC2A62C36_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_31D6595C5AAE5CAFBBE8E80355F1FCDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Table] </link:label>
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<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_C9036631AD3AA82072FF20CFC2A7FF15_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_BE4989C91D08597882664599B37C62AA" 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>
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<link:label id="lab_us-gaap_StatementEquityComponentsAxis_C24CEF6CB4A247FF0CEA20CFC2A80F47_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_D1F34D24C4FF592294F84143338251C8" 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_C24CEF6CB4A247FF0CEA20CFC2A80F47_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_D1F34D24C4FF592294F84143338251C8" 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_D546789FEFD21F72DFAD20CFC2A803F4_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_423100A4EE49571180F4454960843205" 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_D546789FEFD21F72DFAD20CFC2A803F4_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_423100A4EE49571180F4454960843205" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>
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<link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_448F2BD00341DA183C7B20CFC2A86C8C_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_B868693CC7E85A9B86F6E7DFBFB43C36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension and post retirement benefit plans </link:label>
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<link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_5FCF05C60AEF59FADBF620CFC2A8AA5E_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_A632CD50C023515F90A462D65773F5A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of initial net obligation and prior service cost </link:label>
<link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_5FCF05C60AEF59FADBF620CFC2A8AA5E_label_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_A632CD50C023515F90A462D65773F5A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] </link:label>
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<link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_E732EAD35EEF59DC387220CFC2A9BB64_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_71F6BB735FE552C0A61863947674F79F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of net loss </link:label>
<link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_E732EAD35EEF59DC387220CFC2A9BB64_label_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_71F6BB735FE552C0A61863947674F79F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) 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_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_71F6BB735FE552C0A61863947674F79F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_1EA69DC563070F0BEEBE20CFC2A96B62_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_B3204CA079C8598A8F7FE98E650F3B7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative contracts </link:label>
<link:label id="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_1EA69DC563070F0BEEBE20CFC2A96B62_label_en-US" xlink:label="lab_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_B3204CA079C8598A8F7FE98E650F3B7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Net Gain (Loss) from Cash Flow Hedges 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_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_B3204CA079C8598A8F7FE98E650F3B7D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_D53DA732CEE9A1D2976020CFC2A9EB51_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_6D9DFFD2CEA15D3EA2628F69DC7689EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items] </link:label>
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<link:label id="lab_us-gaap_NonoperatingIncomeExpense_BD36C4066B923F8E0DE920CFC2A95D82_verboseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_413B2432F43C591AB676AEE333AF34ED" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other income (expense), net </link:label>
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<link:label id="lab_us-gaap_RevenueFromContractWithCustomerAbstract_D044F37D5036ABC1F8B9DD32DBB6990A_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerAbstract_23270B0BD4D359D6AC03C9085C52F179" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Abstract] </link:label>
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<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_BC1509FB8ADFC21881DDDD32DBB623DE_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_242AF45781335E418BAEFC7BF548A2BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Text Block] </link:label>
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<link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_97B5E971A5D47CD0C81A5EB6957ECA5C_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_97B5E971A5D47CD0C81A5EB6957ECA5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Financial Position [Abstract] </link:label>
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<link:label id="lab_us-gaap_PreferredStockSharesAuthorized_BE5384C46FA52A7346F05EB695808F76_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_BE5384C46FA52A7346F05EB695808F76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Preferred stock, shares authorized (in shares) </link:label>
<link:label id="lab_us-gaap_PreferredStockSharesAuthorized_BE5384C46FA52A7346F05EB695808F76_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_BE5384C46FA52A7346F05EB695808F76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preferred Stock, Shares Authorized </link:label>
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<link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_061B59FC567416C2B4F55EB6957F4DD2_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_061B59FC567416C2B4F55EB6957F4DD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Preferred stock, par value (in dollars per share) </link:label>
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<link:label id="lab_us-gaap_GeographicConcentrationRiskMember_CEB236098433925783AA5EBB4EAB9134_terseLabel_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember_CEB236098433925783AA5EBB4EAB9134" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographic Concentration Risk </link:label>
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<link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_0993B8D72D5EC26853BEDD32DC522B23_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_09FDB2DBF8745CEA88BB2BC4EF46A0EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in the Carrying Amount of Goodwill by Segment </link:label>
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<link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_66786ECC560B891BF88DDD32DC525509_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_36A88B666606584C80348EA8B8446C39" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible Assets of the Company, Other Than Goodwill and Trade Names </link:label>
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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_F9004A52293B753D0124FCF4CE4B8A39_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_2AAE793B66335E6DBDCCE0C28B7CAFB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss) [Table] </link:label>
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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_82B9F2CCA9C618189AD8FCF4CE4EFDF0_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_F9D8A714CD165B27A1C7F5263E891A4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Net of Tax </link:label>
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<link:label id="lab_us-gaap_LesseeLeaseDescriptionTable_0F7032CD6856ABE79058DD32DB22CFE4_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionTable_91E91F19595E53799D1155244A5862D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Table] </link:label>
<link:label id="lab_us-gaap_LesseeLeaseDescriptionTable_0F7032CD6856ABE79058DD32DB22CFE4_label_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionTable_91E91F19595E53799D1155244A5862D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Table] </link:label>
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<link:label id="lab_us-gaap_LesseeLeaseDescriptionLineItems_410E1C867089E439E12BDD32DB236C60_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionLineItems_20E87CD95A995F7BB768D0CB8E93A9E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Line Items] </link:label>
<link:label id="lab_us-gaap_LesseeLeaseDescriptionLineItems_410E1C867089E439E12BDD32DB236C60_label_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionLineItems_20E87CD95A995F7BB768D0CB8E93A9E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Line Items] </link:label>
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<link:label id="lab_wab_LesseeWeightedAverageDiscountRatePercent_807BCC153894919D33D0DD32DB24726A_verboseLabel_en-US" xlink:label="lab_wab_LesseeWeightedAverageDiscountRatePercent_63FE5BB3286051B48EB014C5C11C8D3C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Discount rate </link:label>
<link:label id="lab_wab_LesseeWeightedAverageDiscountRatePercent_807BCC153894919D33D0DD32DB24726A_label_en-US" xlink:label="lab_wab_LesseeWeightedAverageDiscountRatePercent_63FE5BB3286051B48EB014C5C11C8D3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Weighted Average Discount Rate, Percent </link:label>
<link:label id="lab_wab_LesseeWeightedAverageDiscountRatePercent_807BCC153894919D33D0DD32DB24726A_documentation_en-US" xlink:label="lab_wab_LesseeWeightedAverageDiscountRatePercent_63FE5BB3286051B48EB014C5C11C8D3C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Weighted Average Discount Rate, Percent </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeWeightedAverageDiscountRatePercent" xlink:label="loc_wab_LesseeWeightedAverageDiscountRatePercent_63FE5BB3286051B48EB014C5C11C8D3C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_C73154AD8309E0F6BE83F868EA9AA7F4_verboseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_C73154AD8309E0F6BE83F868EA9AA7F4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency loss </link:label>
<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_C73154AD8309E0F6BE83F868EA9AA7F4_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossRealized_C73154AD8309E0F6BE83F868EA9AA7F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Foreign Currency Transaction Gain (Loss), Realized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_C73154AD8309E0F6BE83F868EA9AA7F4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_E302F97F6A15C883EB73F868EA9CB3EE_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_E302F97F6A15C883EB73F868EA9CB3EE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Equity income </link:label>
<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_E302F97F6A15C883EB73F868EA9CB3EE_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_E302F97F6A15C883EB73F868EA9CB3EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Equity Method Investments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_E302F97F6A15C883EB73F868EA9CB3EE" xlink:type="locator"/>
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<link:label id="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514_negatedTerseLabel_en-US" xlink:label="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Expected return on pension assets/amortization </link:label>
<link:label id="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514_label_en-US" xlink:label="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Periodic Defined Benefits Expense Reversal of Expense Excluding Interest Cost And Service Cost Component </link:label>
<link:label id="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514_documentation_en-US" xlink:label="lab_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Periodic Defined Benefits Expense Reversal of Expense Excluding Interest Cost And Service Cost Component </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent" xlink:label="loc_wab_PeriodicDefinedBenefitsExpenseReversalofExpenseExcludingInterestCostAndServiceCostComponent_70283440A2AE57C10176F868EA9CD514" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_3BD1633D86429ACF982BF868EA9C9D7B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_3BD1633D86429ACF982BF868EA9C9D7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other miscellaneous income </link:label>
<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_3BD1633D86429ACF982BF868EA9C9D7B_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_3BD1633D86429ACF982BF868EA9C9D7B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Nonoperating Income (Expense) </link:label>
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<link:label id="lab_us-gaap_NonoperatingIncomeExpense_1C1143579FE79C551A32F868EA9D69B9_totalLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_1C1143579FE79C551A32F868EA9D69B9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total other 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_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_1C1143579FE79C551A32F868EA9D69B9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_67B8A58D7DEE12441915DD32DB979E86_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_4D0CCF6C37495019B9729718C08D88E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Change in Carrying Amount of Contract Assets and Contract Liabilities </link:label>
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<link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_90ACBD60D3A4D2D2A431DD32DC142A8E_terseLabel_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_C1AF44A32FF755BAB5BF2F74E7CEC399" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounting Policies </link:label>
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<link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_5E93DA145AC8EB0B85B1299E09183B19_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_AC10C1056CD2514682159EC249B5E17A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>
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<link:label id="lab_us-gaap_CommonStockDividendsPerShareCashPaid_E3E9E832790268A2A12D299E09186AAB_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4F5D3A765F9C5A2995DCC4D31B4D509B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash dividends, per share (in dollars per share) </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_0967B03F0FDEA6C864CBDD32DB157FDE_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_34CF081AE4355A39B3BDC969A4E9634D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Outstanding, beginning of period (in shares) </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_F483D073F00B6D96A6C8DD32DB15ADFE_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_C952161A34405460AC05D9DFD341AF4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Granted (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_F483D073F00B6D96A6C8DD32DB15ADFE_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_C952161A34405460AC05D9DFD341AF4E" 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, Grants in Period </link:label>
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<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_08138EF11D460E46A881DD32DB152C80_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_A33BBFED8BAF53C9A752B2202D948281" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustment for incentive stock awards expected to vest (in shares) </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_08138EF11D460E46A881DD32DB152C80_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_A33BBFED8BAF53C9A752B2202D948281" 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 Nonvested Number Expected To Vest </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_08138EF11D460E46A881DD32DB152C80_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_A33BBFED8BAF53C9A752B2202D948281" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share based compensation arrangement by share based payment award equity instruments other than options nonvested number expected to vest. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumberExpectedToVest_A33BBFED8BAF53C9A752B2202D948281" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7A78F37C2700C187C469DD32DB15D635_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7946709BE25A5F468CCF1B0E863E7B9C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Canceled (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7A78F37C2700C187C469DD32DB15D635_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7946709BE25A5F468CCF1B0E863E7B9C" 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, Forfeited in Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7946709BE25A5F468CCF1B0E863E7B9C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_6557A70CF72A32B2136DDD32DB15E165_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_8C83B16155855767B0C5FE4A0131B89E" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Outstanding, end of period (in shares) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_8C83B16155855767B0C5FE4A0131B89E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_82FFF0AE7291004EC82FDD32DB16FB23_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_2EEF810B7CEA5FF4AD0116F22C85ADD3" 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, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2879305160BFA8C6D2DCDD32DB165A02_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_78650D6860925811AEC7ABAFA3726A03" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Outstanding, beginning of period (in dollars per share) </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ECB48B0EEB205C579B70DD32DB168CAC_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4BA77193696159B58B590B9E23E95FCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Granted (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ECB48B0EEB205C579B70DD32DB168CAC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4BA77193696159B58B590B9E23E95FCC" 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, Grants in Period, Weighted Average Grant Date Fair Value </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_EEEA9A4C4C799C5DC943DD32DB16EB57_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_5C894767A70152EDA6E309224CC9C19E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vested (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_EEEA9A4C4C799C5DC943DD32DB16EB57_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_5C894767A70152EDA6E309224CC9C19E" 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, Vested in Period, Weighted Average Grant 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_5C894767A70152EDA6E309224CC9C19E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_5C894767A70152EDA6E309224CC9C19E" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_5C894767A70152EDA6E309224CC9C19E" xlink:type="arc"/>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_0868B64139E6A0343FC7DD32DB16728E_terseLabel_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_098647021AB15B6E8634C6955645E305" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustment for incentive stock awards expected to vest (in dollars per share) </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_0868B64139E6A0343FC7DD32DB16728E_label_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_098647021AB15B6E8634C6955645E305" 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 Net Performance Adjustment Weighted Average Net Performance Adjustment Fair Value </link:label>
<link:label id="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_0868B64139E6A0343FC7DD32DB16728E_documentation_en-US" xlink:label="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_098647021AB15B6E8634C6955645E305" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share based compensation arrangement by share based payment award equity instruments other than options net performance adjustment weighted average net performance adjustment fair value. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue" xlink:label="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_098647021AB15B6E8634C6955645E305" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_098647021AB15B6E8634C6955645E305" xlink:to="lab_wab_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetPerformanceAdjustmentWeightedAverageNetPerformanceAdjustmentFairValue_098647021AB15B6E8634C6955645E305" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_B200F010A4F0DFC7865FDD32DB17C999_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_3E96D78BFD1659B384AD55FD48402C3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Canceled (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_B200F010A4F0DFC7865FDD32DB17C999_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_3E96D78BFD1659B384AD55FD48402C3B" 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, Forfeitures, Weighted Average Grant 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_3E96D78BFD1659B384AD55FD48402C3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_3E96D78BFD1659B384AD55FD48402C3B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_3E96D78BFD1659B384AD55FD48402C3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_863FE88C3EAF092AD74EDD32DB17882B_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_81C11FF9FAA352BEBD60C7511BC24A20" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Outstanding, end of period (in dollars per share) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_81C11FF9FAA352BEBD60C7511BC24A20" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_81C11FF9FAA352BEBD60C7511BC24A20" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_81C11FF9FAA352BEBD60C7511BC24A20" xlink:type="arc"/>
<link:label id="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_64381C1368456974F0DC8CEF8333A63D_terseLabel_en-US" xlink:label="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_64381C1368456974F0DC8CEF8333A63D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] </link:label>
<link:label id="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_64381C1368456974F0DC8CEF8333A63D_label_en-US" xlink:label="lab_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_64381C1368456974F0DC8CEF8333A63D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward" xlink:label="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_64381C1368456974F0DC8CEF8333A63D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497_periodStartLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Balance at beginning of year </link:label>
<link:label id="lab_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Standard and Extended Product Warranty Accrual </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497" xlink:to="lab_us-gaap_ProductWarrantyAccrual_A45E13CC1EBBEDD490558CEF83330497" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions </link:label>
<link:label id="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Standard and Extended Product Warranty Accrual, Additions from Business Acquisition </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition" xlink:label="loc_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF" xlink:to="lab_us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition_A415009A50FE8F4B98D18CEF8333D7DF" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warranty expense </link:label>
<link:label id="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Standard and Extended Product Warranty Accrual, Increase for Warranties Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantyAccrualWarrantiesIssued" xlink:label="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928" xlink:to="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_2EA82B833D26EF659BC68CEF83346928" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41_negatedLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Warranty claim payments </link:label>
<link:label id="lab_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Standard and Extended Product Warranty Accrual, Decrease for Payments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantyAccrualPayments" xlink:label="loc_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41" xlink:to="lab_us-gaap_ProductWarrantyAccrualPayments_6973B079CF558D83A89C8CEF83343D41" xlink:type="arc"/>
<link:label id="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0363002095E0D04DEC7E8CEF8334623E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0363002095E0D04DEC7E8CEF8334623E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency impact/other </link:label>
<link:label id="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0363002095E0D04DEC7E8CEF8334623E_label_en-US" xlink:label="lab_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0363002095E0D04DEC7E8CEF8334623E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss_0363002095E0D04DEC7E8CEF8334623E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProductWarrantyAccrual_60D4DA47ABBAC7793C888CEF8334E777_periodEndLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_60D4DA47ABBAC7793C888CEF8334E777" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Balance 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_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_60D4DA47ABBAC7793C888CEF8334E777" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_66932341098A1D684635130DB8734C05_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_66932341098A1D684635130DB8734C05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_66932341098A1D684635130DB8734C05_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_66932341098A1D684635130DB8734C05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>
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<link:label id="lab_us-gaap_TreasuryStockMember_5D0390DEEBBAC4566100130DB8735E91_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_5D0390DEEBBAC4566100130DB8735E91" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury Stock </link:label>
<link:label id="lab_us-gaap_TreasuryStockMember_5D0390DEEBBAC4566100130DB8735E91_label_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_5D0390DEEBBAC4566100130DB8735E91" 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_5D0390DEEBBAC4566100130DB8735E91" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RetainedEarningsMember_24F9A085693B02117B54130DB873DC44_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_24F9A085693B02117B54130DB873DC44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retained Earnings </link:label>
<link:label id="lab_us-gaap_RetainedEarningsMember_24F9A085693B02117B54130DB873DC44_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_24F9A085693B02117B54130DB873DC44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings [Member] </link:label>
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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_402161DB74B5CAE86CB0130DB873CEC4_verboseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_402161DB74B5CAE86CB0130DB873CEC4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Loss </link:label>
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<link:label id="lab_us-gaap_NoncontrollingInterestMember_30A2A1E5D58DA96F25EA130DB8734B3E_terseLabel_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_30A2A1E5D58DA96F25EA130DB8734B3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest </link:label>
<link:label id="lab_us-gaap_NoncontrollingInterestMember_30A2A1E5D58DA96F25EA130DB8734B3E_label_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_30A2A1E5D58DA96F25EA130DB8734B3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest [Member] </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1629FABC975DBE45B97E130DB87479D9_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1629FABC975DBE45B97E130DB87479D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1629FABC975DBE45B97E130DB87479D9_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1629FABC975DBE45B97E130DB87479D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1629FABC975DBE45B97E130DB87479D9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SharesIssued_D1D6935023A8C0407A1A130DB874C5DF_periodStartLabel_en-US" xlink:label="lab_us-gaap_SharesIssued_D1D6935023A8C0407A1A130DB874C5DF" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning Balance (in 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_D1D6935023A8C0407A1A130DB874C5DF" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Cash dividends </link:label>
<link:label id="lab_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943_label_en-US" xlink:label="lab_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividends, Cash </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsCash" xlink:label="loc_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943" xlink:to="lab_us-gaap_DividendsCash_15EF48CF1D9C1AFA278E130DB874B943" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_A1E6DCFA4F441AEE7F2A130DB8745DDA_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_A1E6DCFA4F441AEE7F2A130DB8745DDA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_A1E6DCFA4F441AEE7F2A130DB8745DDA_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_A1E6DCFA4F441AEE7F2A130DB8745DDA" 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>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_A1E6DCFA4F441AEE7F2A130DB8745DDA" xlink:type="locator"/>
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<link:label id="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91_terseLabel_en-US" xlink:label="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax (in shares) </link:label>
<link:label id="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91_label_en-US" xlink:label="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Granted Exercised And Cancelled For Various Equity Instruments </link:label>
<link:label id="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91_documentation_en-US" xlink:label="lab_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Stock awards granted, exercised and cancelled for the following forms of stock compensation 1) Stock Options 2) Restricted Stock Awards and 3) Incentive Stock Awards. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments" xlink:label="loc_wab_StockGrantedExercisedAndCancelledForVariousEquityInstruments_00DF51BF5061FDB0CCD1130DB8755F91" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_773F18604F952A68C8F2130DB875008C_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_773F18604F952A68C8F2130DB875008C" 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_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_773F18604F952A68C8F2130DB875008C_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_773F18604F952A68C8F2130DB875008C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> APIC, Share-based Payment Arrangement, Increase for Cost Recognition </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_773F18604F952A68C8F2130DB875008C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProfitLoss_35D7387E9534A031220D130DB8751249_terseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_35D7387E9534A031220D130DB8751249" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net income (loss) </link:label>
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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_97ED96B636A82E8C6601130DB875547A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_97ED96B636A82E8C6601130DB875547A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive income, 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_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_97ED96B636A82E8C6601130DB875547A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_F6DB3DCCED42989B15F1130DB875AA38_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_F6DB3DCCED42989B15F1130DB875AA38" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions, net (in shares) </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_F6DB3DCCED42989B15F1130DB875AA38_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_F6DB3DCCED42989B15F1130DB875AA38" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, Acquisitions </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_F6DB3DCCED42989B15F1130DB875AA38" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_A32DD8751C31C44F7647130DB875A3D0_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_A32DD8751C31C44F7647130DB875A3D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, Acquisitions </link:label>
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<link:label id="lab_us-gaap_StockholdersEquityOtherShares_6253E83A2415F9C5A391130DB876D346_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityOtherShares_6253E83A2415F9C5A391130DB876D346" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other owner changes (in shares) </link:label>
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<link:label id="lab_us-gaap_StockholdersEquityOther_88D0AE60140FE49F054A130DB876055A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityOther_88D0AE60140FE49F054A130DB876055A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other owner changes </link:label>
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<link:label id="lab_us-gaap_SharesIssued_D244EC3441837B2C4409130DB87618E8_periodEndLabel_en-US" xlink:label="lab_us-gaap_SharesIssued_D244EC3441837B2C4409130DB87618E8" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending Balance (in shares) </link:label>
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<link:label id="lab_us-gaap_OtherDebtSecuritiesMember_6442633623CB9F1C67313ED3ED0E8AB4_label_en-US" xlink:label="lab_us-gaap_OtherDebtSecuritiesMember_169097A2917754AE87263E061582E2F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Debt Obligations [Member] </link:label>
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<link:label id="lab_us-gaap_LongTermDebt_16A0A0D534537DAFE5373ED3ED0FC89F_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_FCF7D6C53C425F558D201F3686A362A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebt_16A0A0D534537DAFE5373ED3ED0FC89F_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_FCF7D6C53C425F558D201F3686A362A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt </link:label>
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<link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_0A079DEC0AA0166D2F2D3ED3ED10347B_label_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_D101D67809C5535B86DB4BC430DB8B87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt and Lease Obligation </link:label>
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<link:label id="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_F235222D1FF001B25D5B3ED3ED10E762_label_en-US" xlink:label="lab_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_CD9861CC7033500F9F80121C889EC179" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt and Lease Obligation, Current </link:label>
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<link:label id="lab_us-gaap_InventoryDisclosureTextBlock_F006128EA26B891EAB4ADD32DC04702B_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_A5D1A43AFDDD5D959504471E5040A97F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:label id="lab_us-gaap_InventoryDisclosureTextBlock_F006128EA26B891EAB4ADD32DC04702B_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_A5D1A43AFDDD5D959504471E5040A97F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory Disclosure [Text Block] </link:label>
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<link:label id="lab_us-gaap_ScheduleOfGoodwillTable_73E3BE29D2D1958619A920CFC25542DF_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_D8C0C0E62113503DB125BAA6C32F5E60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule Of Goodwill [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfGoodwillTable_73E3BE29D2D1958619A920CFC25542DF_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_D8C0C0E62113503DB125BAA6C32F5E60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Goodwill [Table] </link:label>
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<link:label id="lab_us-gaap_GoodwillLineItems_A8669364D980A59FE07C20CFC25708CE_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_FA8144FAC7235777AE80F60847950410" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill [Line Items] </link:label>
<link:label id="lab_us-gaap_GoodwillLineItems_A8669364D980A59FE07C20CFC25708CE_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_FA8144FAC7235777AE80F60847950410" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill [Line Items] </link:label>
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<link:label id="lab_us-gaap_GoodwillRollForward_133435C434C54DCD394020CFC257E360_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_EC21D806ACC05DB3A13796F145312F8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill [Roll Forward] </link:label>
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<link:label id="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_97F089845B507436994C20CFC258E463_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_26DF2256C7F75F40921F3F85F6F9C6AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additions </link:label>
<link:label id="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_97F089845B507436994C20CFC258E463_label_en-US" xlink:label="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_26DF2256C7F75F40921F3F85F6F9C6AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill, Purchase Accounting Adjustments </link:label>
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<link:label id="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_2343E12F85503987615DDD32DC14AF75_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_02627650B90D53DF9B6BF41EAD478A24" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Components of Other Income (Expense) </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_EBCF33478DA3990435382305DF56705A_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_EBCF33478DA3990435382305DF56705A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Trade names, useful life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_EBCF33478DA3990435382305DF56705A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_EBCF33478DA3990435382305DF56705A" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_EBCF33478DA3990435382305DF56705A" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible assets, weighted average useful life (years) </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Remaining Amortization Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_2ECB7EBAFC24587BF4A62305DF564C6B" xlink:type="arc"/>
<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_5089A00B0D9F0E658B422305DF571196_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_5089A00B0D9F0E658B422305DF571196" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible assets, amortization expense </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_5089A00B0D9F0E658B422305DF571196" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_D0E9F412CB799E1BB70FDD32DB876FA4_terseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_6CD5A90DC5CF5408B3DD0E3E8EE023F3" 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_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_D0E9F412CB799E1BB70FDD32DB876FA4_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_6CD5A90DC5CF5408B3DD0E3E8EE023F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_6CD5A90DC5CF5408B3DD0E3E8EE023F3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_6CD5A90DC5CF5408B3DD0E3E8EE023F3" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_6CD5A90DC5CF5408B3DD0E3E8EE023F3" xlink:type="arc"/>
<link:label id="lab_us-gaap_BalanceSheetLocationAxis_DCD064E140F61EB2F2AC130DB694DA6E_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_DCD064E140F61EB2F2AC130DB694DA6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>
<link:label id="lab_us-gaap_BalanceSheetLocationAxis_DCD064E140F61EB2F2AC130DB694DA6E_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_DCD064E140F61EB2F2AC130DB694DA6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_DCD064E140F61EB2F2AC130DB694DA6E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BalanceSheetLocationDomain_987D159017BE3258D438130DB694103D_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_987D159017BE3258D438130DB694103D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>
<link:label id="lab_us-gaap_BalanceSheetLocationDomain_987D159017BE3258D438130DB694103D_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_987D159017BE3258D438130DB694103D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_987D159017BE3258D438130DB694103D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current assets </link:label>
<link:label id="lab_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F_label_en-US" xlink:label="lab_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Current Assets [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F" xlink:to="lab_us-gaap_OtherCurrentAssetsMember_63A17309CAAB18325EF3130DB695807F" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current liabilities </link:label>
<link:label id="lab_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA_label_en-US" xlink:label="lab_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Current Liabilities [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA" xlink:to="lab_us-gaap_OtherCurrentLiabilitiesMember_E9440B3EAEA40D48A5CB130DB6953DEA" xlink:type="arc"/>
<link:label id="lab_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gross notional amount </link:label>
<link:label id="lab_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9_label_en-US" xlink:label="lab_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative, Notional Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:label="loc_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9" xlink:to="lab_us-gaap_DerivativeNotionalAmount_89D4D85FA2A980B9A6A6135233FC59C9" xlink:type="arc"/>
<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_83AE54716940E539A070130DB695D106_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_83AE54716940E539A070130DB695D106" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Derivative asset fair value </link:label>
<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_83AE54716940E539A070130DB695D106_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_83AE54716940E539A070130DB695D106" 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_83AE54716940E539A070130DB695D106" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_83AE54716940E539A070130DB695D106" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeAsset_83AE54716940E539A070130DB695D106" xlink:type="arc"/>
<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_AE167840463008F704A6130DB69624D3_negatedLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_AE167840463008F704A6130DB69624D3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Liabilities at fair value </link:label>
<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_AE167840463008F704A6130DB69624D3_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_AE167840463008F704A6130DB69624D3" 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_AE167840463008F704A6130DB69624D3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_AE167840463008F704A6130DB69624D3" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeLiability_AE167840463008F704A6130DB69624D3" xlink:type="arc"/>
<link:label id="lab_us-gaap_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5_totalLabel_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5" 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_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5_label_en-US" xlink:label="lab_us-gaap_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Derivative, 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_DerivativeFairValueOfDerivativeNet" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5" xlink:to="lab_us-gaap_DerivativeFairValueOfDerivativeNet_20D68887340A0B4E42B5130DB69637B5" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_54646E5EC101FA06066520CFC246D77C_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_A1CA2D3D4D2E544BA43F8B23D38A315F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Remainder of 2019 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_54646E5EC101FA06066520CFC246D77C_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_A1CA2D3D4D2E544BA43F8B23D38A315F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_A1CA2D3D4D2E544BA43F8B23D38A315F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0BFC7B46D88F41D3391420CFC247ECE1_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_5C2721337DB957C1B68B84DEFCD9B1E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_0BFC7B46D88F41D3391420CFC247ECE1_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_5C2721337DB957C1B68B84DEFCD9B1E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_5C2721337DB957C1B68B84DEFCD9B1E0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_5C417D288251639E70FD20CFC247A25F_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ED59E5DA16B1542BB72227D01459F620" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_5C417D288251639E70FD20CFC247A25F_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ED59E5DA16B1542BB72227D01459F620" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ED59E5DA16B1542BB72227D01459F620" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ED59E5DA16B1542BB72227D01459F620" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ED59E5DA16B1542BB72227D01459F620" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_BF56F47011948F7ECC8520CFC2470A86_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_7ADFB9DBF447545D8C17A98DF4AD5F2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_BF56F47011948F7ECC8520CFC2470A86_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_7ADFB9DBF447545D8C17A98DF4AD5F2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_7ADFB9DBF447545D8C17A98DF4AD5F2A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_7ADFB9DBF447545D8C17A98DF4AD5F2A" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_7ADFB9DBF447545D8C17A98DF4AD5F2A" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_CFBEAA361866789767CB20CFC24786A3_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_939CF8E43C54519F808DAD683A0B28C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_CFBEAA361866789767CB20CFC24786A3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_939CF8E43C54519F808DAD683A0B28C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_939CF8E43C54519F808DAD683A0B28C9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_939CF8E43C54519F808DAD683A0B28C9" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_939CF8E43C54519F808DAD683A0B28C9" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value By Balance Sheet Grouping [Table] </link:label>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTable_15B7632C0F3C4D02AE3B12D8F9AE2406" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Measurement Basis [Axis] </link:label>
<link:label id="lab_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6_label_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Measurement Basis [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6" xlink:to="lab_us-gaap_FairValueByMeasurementBasisAxis_03CB387485D4EFEB241312D8F9AFF4A6" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Measurement [Domain] </link:label>
<link:label id="lab_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Measurement [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6" xlink:to="lab_us-gaap_FairValueDisclosureItemAmountsDomain_E52AFFA7B9631B910ADB12D8F9B031A6" xlink:type="arc"/>
<link:label id="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53_terseLabel_en-US" xlink:label="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Portion at Fair Value Measurement </link:label>
<link:label id="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53_label_en-US" xlink:label="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Portion at Fair Value Measurement [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53" xlink:to="lab_us-gaap_PortionAtFairValueFairValueDisclosureMember_2A5BD4F3B221EFC3225712D8F9B05A53" xlink:type="arc"/>
<link:label id="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219_terseLabel_en-US" xlink:label="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Carrying Value </link:label>
<link:label id="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219_label_en-US" xlink:label="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reported Value Measurement [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219" xlink:to="lab_us-gaap_CarryingReportedAmountFairValueDisclosureMember_C845E1A58FEBEDF9530D12D8F9B07219" xlink:type="arc"/>
<link:label id="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322_terseLabel_en-US" xlink:label="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value </link:label>
<link:label id="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322_label_en-US" xlink:label="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Estimate of Fair Value Measurement [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322" xlink:to="lab_us-gaap_EstimateOfFairValueFairValueDisclosureMember_E2FD30885748A16CED8712D8F9B07322" xlink:type="arc"/>
<link:label id="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC_verboseLabel_en-US" xlink:label="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 4.375% Senior Notes due 2023 </link:label>
<link:label id="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC_label_en-US" xlink:label="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 4.75 Percent Senior Notes Due Two Thousand Twenty Three [Member] </link:label>
<link:label id="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC_documentation_en-US" xlink:label="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 4.75 percent senior notes due two thousand twenty three. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember" xlink:label="loc_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC" xlink:to="lab_wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember_B5FA441DA8677EF0AE7D12D8F9B100AC" xlink:type="arc"/>
<link:label id="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D_verboseLabel_en-US" xlink:label="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 3.45% Senior Notes due 2026 </link:label>
<link:label id="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D_label_en-US" xlink:label="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2026 [Member] </link:label>
<link:label id="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D_documentation_en-US" xlink:label="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Senior Notes Due 2026 [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_SeniorNotesDue2026Member" xlink:label="loc_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D" xlink:to="lab_wab_SeniorNotesDue2026Member_3AF0894392D0990E22F712D8F9B2387D" xlink:type="arc"/>
<link:label id="lab_wab_FloatingRateNotesDue2021Member_9A86540F5A6725A2BF8512D8F9B27F53_terseLabel_en-US" xlink:label="lab_wab_FloatingRateNotesDue2021Member_9A86540F5A6725A2BF8512D8F9B27F53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Floating Rate Notes due 2021 </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_FloatingRateNotesDue2021Member" xlink:label="loc_wab_FloatingRateNotesDue2021Member_9A86540F5A6725A2BF8512D8F9B27F53" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_FloatingRateNotesDue2021Member_9A86540F5A6725A2BF8512D8F9B27F53" xlink:to="lab_wab_FloatingRateNotesDue2021Member_9A86540F5A6725A2BF8512D8F9B27F53" xlink:type="arc"/>
<link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533_terseLabel_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 4.15% Senior Notes due 2024 </link:label>
<link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533_label_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 4.150 Percent Senior Notes Due Twenty Thousand and Twenty Four [Member] </link:label>
<link:label id="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533_documentation_en-US" xlink:label="lab_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 4.150 Percent Senior Notes Due Twenty Thousand and Twenty Four [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember" xlink:label="loc_wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember_9B5EDF479EF7C82CCF7912D8F9B24533" xlink:type="locator"/>
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<link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8_terseLabel_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 4.7% Senior Notes due 2028 </link:label>
<link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8_label_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 4.70 Percent Senior Notes Due Twenty Thousand and Twenty Six [Member] </link:label>
<link:label id="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8_documentation_en-US" xlink:label="lab_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 4.70 Percent Senior Notes Due Twenty Thousand and Twenty Six [Member] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember" xlink:label="loc_wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember_00C36A3D5DBFC300297812D8F9B247C8" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_E624A51E7A300FE8D4A012D8F9B2A9A0_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_E624A51E7A300FE8D4A012D8F9B2A9A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] </link:label>
<link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_E624A51E7A300FE8D4A012D8F9B2A9A0_label_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_E624A51E7A300FE8D4A012D8F9B2A9A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_E624A51E7A300FE8D4A012D8F9B2A9A0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentFairValue_C5FB38952DA559C508B512D8F9B3B5AD_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFairValue_C5FB38952DA559C508B512D8F9B3B5AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt instrument </link:label>
<link:label id="lab_us-gaap_DebtInstrumentFairValue_C5FB38952DA559C508B512D8F9B3B5AD_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFairValue_C5FB38952DA559C508B512D8F9B3B5AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Fair Value Disclosure </link:label>
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<link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_52168305A65D3C0A25F9DD32DC04D229_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_79EAD587F0485F4EA5AE77B91DB2B5D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantor Subsidiaries Financial Information </link:label>
<link:label id="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_52168305A65D3C0A25F9DD32DC04D229_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_79EAD587F0485F4EA5AE77B91DB2B5D7" 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>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock" xlink:label="loc_us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock_79EAD587F0485F4EA5AE77B91DB2B5D7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_1CDD0157795BF19A0697DD32DC62FC4A_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_8D0529033FE853D3BFEB7320E96C3119" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Changes in Product Warranty Reserve </link:label>
<link:label id="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_1CDD0157795BF19A0697DD32DC62FC4A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_8D0529033FE853D3BFEB7320E96C3119" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Product Warranty Liability [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_ScheduleOfProductWarrantyLiabilityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlock_8D0529033FE853D3BFEB7320E96C3119" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6BAFE1F599718F59AAB920CFC226A8C3_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_757A28C501F655618B8A8BF3A1D193A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Leases </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6BAFE1F599718F59AAB920CFC226A8C3_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_757A28C501F655618B8A8BF3A1D193A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payment, Due [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_757A28C501F655618B8A8BF3A1D193A7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_09D214E6E7FC56FE010C20CFC22731C0_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_9A35CFB419FA584695ACD0B256D77B71" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Remaining 2019 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_09D214E6E7FC56FE010C20CFC22731C0_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_9A35CFB419FA584695ACD0B256D77B71" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_9A35CFB419FA584695ACD0B256D77B71" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_9A35CFB419FA584695ACD0B256D77B71" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_9A35CFB419FA584695ACD0B256D77B71" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_D6CD484CC5E5F7613F1A20CFC227DBCF_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_0C5B81BD633554F7B31DF452E95666DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_D6CD484CC5E5F7613F1A20CFC227DBCF_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_0C5B81BD633554F7B31DF452E95666DA" 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_0C5B81BD633554F7B31DF452E95666DA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A8EE16195D5ECCAAAC1D20CFC22716A7_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_719DA8BFA2CF550BBDC7B8C0D75A55D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_A8EE16195D5ECCAAAC1D20CFC22716A7_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_719DA8BFA2CF550BBDC7B8C0D75A55D8" 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_719DA8BFA2CF550BBDC7B8C0D75A55D8" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_9029D571E8BDC7A6B48120CFC2277F98_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D800FF01FA4958B793D7BB065B84A481" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_9029D571E8BDC7A6B48120CFC2277F98_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_D800FF01FA4958B793D7BB065B84A481" 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_D800FF01FA4958B793D7BB065B84A481" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_EE1F716E990EB125E5AF20CFC2285741_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_87E98D7469B05285B9B8015D3CEAA468" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_EE1F716E990EB125E5AF20CFC2285741_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_87E98D7469B05285B9B8015D3CEAA468" 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_87E98D7469B05285B9B8015D3CEAA468" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B8F64CF886A5F2B8197920CFC2284AE7_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_BA1791F9A2E05542891E7A1AA9C27DB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Thereafter </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B8F64CF886A5F2B8197920CFC2284AE7_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_BA1791F9A2E05542891E7A1AA9C27DB6" 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>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_53E3658C5A94035185F020CFC228B24C_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE0CCF123450514EB32B7776C2F80599" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total lease payments </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_53E3658C5A94035185F020CFC228B24C_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE0CCF123450514EB32B7776C2F80599" 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_DE0CCF123450514EB32B7776C2F80599" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_DF123D5BBE946C693E9420CFC2281CB2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_74F52E2C84C35F1EA1F259F215692AD1" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less: Present value discount </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_DF123D5BBE946C693E9420CFC2281CB2_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_74F52E2C84C35F1EA1F259F215692AD1" 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_74F52E2C84C35F1EA1F259F215692AD1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_74F52E2C84C35F1EA1F259F215692AD1" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_74F52E2C84C35F1EA1F259F215692AD1" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiability_A9293CA64256595962E920CFC228A433_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_7A6E2EB8053C5EC7BD4C05DE6D983773" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Present value lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiability_A9293CA64256595962E920CFC228A433_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_7A6E2EB8053C5EC7BD4C05DE6D983773" 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_7A6E2EB8053C5EC7BD4C05DE6D983773" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_B18A13880A1CFD61ED7B20CFC22929B7_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_20B0BD9A68415023A82FECBE6229E005" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance Leases </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_B18A13880A1CFD61ED7B20CFC22929B7_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_20B0BD9A68415023A82FECBE6229E005" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Liability, Payment, Due [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_20B0BD9A68415023A82FECBE6229E005" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_20B0BD9A68415023A82FECBE6229E005" xlink:to="lab_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_20B0BD9A68415023A82FECBE6229E005" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_9BEA3848112CDCDFD1FE20CFC2292421_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_968C4267494F59E8AC286B4A9CCD5694" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Remaining 2019 </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_9BEA3848112CDCDFD1FE20CFC2292421_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_968C4267494F59E8AC286B4A9CCD5694" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Liability, Payments, Remainder of Fiscal Year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_968C4267494F59E8AC286B4A9CCD5694" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_968C4267494F59E8AC286B4A9CCD5694" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_968C4267494F59E8AC286B4A9CCD5694" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_A6A5F7C093D5CA03642320CFC229D777_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_99530F29189550258CE3559F5BCE527A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_A6A5F7C093D5CA03642320CFC229D777_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_99530F29189550258CE3559F5BCE527A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_99530F29189550258CE3559F5BCE527A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_99530F29189550258CE3559F5BCE527A" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_99530F29189550258CE3559F5BCE527A" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_ADF64F5FF911D64D0EEA20CFC2299906_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_F6A93EA233BD5D41846EF12165247BD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_ADF64F5FF911D64D0EEA20CFC2299906_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_F6A93EA233BD5D41846EF12165247BD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_F6A93EA233BD5D41846EF12165247BD1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_F6A93EA233BD5D41846EF12165247BD1" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_F6A93EA233BD5D41846EF12165247BD1" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_60E2086CCD6D5FAEFA7220CFC229ABFE_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_DD4DFF5CFA3F5AEB96FC617BB5498025" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_60E2086CCD6D5FAEFA7220CFC229ABFE_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_DD4DFF5CFA3F5AEB96FC617BB5498025" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_DD4DFF5CFA3F5AEB96FC617BB5498025" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_DD4DFF5CFA3F5AEB96FC617BB5498025" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_DD4DFF5CFA3F5AEB96FC617BB5498025" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_18342F59F2E7516A131C20CFC2290FC0_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_2E3B7B9EBB2F5377A7ABFF26CBF0D108" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_18342F59F2E7516A131C20CFC2290FC0_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_2E3B7B9EBB2F5377A7ABFF26CBF0D108" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_2E3B7B9EBB2F5377A7ABFF26CBF0D108" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_2E3B7B9EBB2F5377A7ABFF26CBF0D108" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_2E3B7B9EBB2F5377A7ABFF26CBF0D108" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_3C7CFB38BA611DD0F71820CFC22A5A10_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_93EC272A793354D6BFE2FAA0F1DEB1E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Thereafter </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_3C7CFB38BA611DD0F71820CFC22A5A10_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_93EC272A793354D6BFE2FAA0F1DEB1E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_93EC272A793354D6BFE2FAA0F1DEB1E5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_93EC272A793354D6BFE2FAA0F1DEB1E5" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_93EC272A793354D6BFE2FAA0F1DEB1E5" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_F76C490937EA2BECE88220CFC22A036C_totalLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_F7E0B25CB0C354B1902DCBA3CB81F851" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total lease payments </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_F76C490937EA2BECE88220CFC22A036C_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_F7E0B25CB0C354B1902DCBA3CB81F851" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Liability, Payment, Due </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_F7E0B25CB0C354B1902DCBA3CB81F851" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_F7E0B25CB0C354B1902DCBA3CB81F851" xlink:to="lab_us-gaap_FinanceLeaseLiabilityPaymentsDue_F7E0B25CB0C354B1902DCBA3CB81F851" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_F31D56D400160C3B5ABA20CFC22A0537_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_74CD9633B0735935B0396204F754F6EE" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less: Present value discount </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_F31D56D400160C3B5ABA20CFC22A0537_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_74CD9633B0735935B0396204F754F6EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance 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_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_74CD9633B0735935B0396204F754F6EE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_74CD9633B0735935B0396204F754F6EE" xlink:to="lab_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_74CD9633B0735935B0396204F754F6EE" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiability_49F5958228D57E3ABE3720CFC22A5034_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_21832FD609C557419F32A8D37862BB5C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Present value lease liabilities </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiability_49F5958228D57E3ABE3720CFC22A5034_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiability_21832FD609C557419F32A8D37862BB5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="loc_us-gaap_FinanceLeaseLiability_21832FD609C557419F32A8D37862BB5C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiability_21832FD609C557419F32A8D37862BB5C" xlink:to="lab_us-gaap_FinanceLeaseLiability_21832FD609C557419F32A8D37862BB5C" xlink:type="arc"/>
<link:label id="lab_wab_TotalPaymentsDueAbstract_CD09D05A533ED337877220CFC22AAA9F_terseLabel_en-US" xlink:label="lab_wab_TotalPaymentsDueAbstract_EE79F3591D865922998F01E414181077" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total </link:label>
<link:label id="lab_wab_TotalPaymentsDueAbstract_CD09D05A533ED337877220CFC22AAA9F_label_en-US" xlink:label="lab_wab_TotalPaymentsDueAbstract_EE79F3591D865922998F01E414181077" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Total Payments Due [Abstract] </link:label>
<link:label id="lab_wab_TotalPaymentsDueAbstract_CD09D05A533ED337877220CFC22AAA9F_documentation_en-US" xlink:label="lab_wab_TotalPaymentsDueAbstract_EE79F3591D865922998F01E414181077" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Total Payments Due [Abstract] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_TotalPaymentsDueAbstract" xlink:label="loc_wab_TotalPaymentsDueAbstract_EE79F3591D865922998F01E414181077" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_TotalPaymentsDueAbstract_EE79F3591D865922998F01E414181077" xlink:to="lab_wab_TotalPaymentsDueAbstract_EE79F3591D865922998F01E414181077" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_9C5608F0280011C8768C20CFC22AC02A_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_C070E0D77F4F5F22A5B873EB769C6E6B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Remaining 2019 </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_9C5608F0280011C8768C20CFC22AC02A_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_C070E0D77F4F5F22A5B873EB769C6E6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total, Payments, Remainder of Fiscal Year </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_9C5608F0280011C8768C20CFC22AC02A_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_C070E0D77F4F5F22A5B873EB769C6E6B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total, Payments, Remainder of Fiscal Year </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_C070E0D77F4F5F22A5B873EB769C6E6B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_C070E0D77F4F5F22A5B873EB769C6E6B" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsRemainderofFiscalYear_C070E0D77F4F5F22A5B873EB769C6E6B" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_61D8D7555F849A803AED20CFC22BEC56_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_C77DD4DC2B3350098D681428757CE114" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_61D8D7555F849A803AED20CFC22BEC56_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_C77DD4DC2B3350098D681428757CE114" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Two </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_61D8D7555F849A803AED20CFC22BEC56_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_C77DD4DC2B3350098D681428757CE114" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Two </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_C77DD4DC2B3350098D681428757CE114" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_C77DD4DC2B3350098D681428757CE114" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearTwo_C77DD4DC2B3350098D681428757CE114" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_D8B4A8D5657C156F355520CFC22B4CDD_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_031891F7767055EAA2502D644630BBE0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_D8B4A8D5657C156F355520CFC22B4CDD_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_031891F7767055EAA2502D644630BBE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance, Lease, Liability, Total, Payments, Due Year Three </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_D8B4A8D5657C156F355520CFC22B4CDD_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_031891F7767055EAA2502D644630BBE0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance, Lease, Liability, Total, Payments, Due Year Three </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_031891F7767055EAA2502D644630BBE0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_031891F7767055EAA2502D644630BBE0" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearThree_031891F7767055EAA2502D644630BBE0" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_A77E6C692BF3CAA69E8020CFC22BA4DF_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_D04D99B500755049AEF0C9342D47403E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_A77E6C692BF3CAA69E8020CFC22BA4DF_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_D04D99B500755049AEF0C9342D47403E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Four </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_A77E6C692BF3CAA69E8020CFC22BA4DF_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_D04D99B500755049AEF0C9342D47403E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Four </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_D04D99B500755049AEF0C9342D47403E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_D04D99B500755049AEF0C9342D47403E" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFour_D04D99B500755049AEF0C9342D47403E" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_E02F62E9ED5FD52C9BC220CFC22B7C95_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_40F377097D6F597D8251B2BA469E7B2E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_E02F62E9ED5FD52C9BC220CFC22B7C95_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_40F377097D6F597D8251B2BA469E7B2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Five </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_E02F62E9ED5FD52C9BC220CFC22B7C95_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_40F377097D6F597D8251B2BA469E7B2E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due Year Five </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_40F377097D6F597D8251B2BA469E7B2E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_40F377097D6F597D8251B2BA469E7B2E" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueYearFive_40F377097D6F597D8251B2BA469E7B2E" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_65EB76696EEE282B297A20CFC22BA46C_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_B1C5014A534A5668AB9E37AC05694358" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Thereafter </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_65EB76696EEE282B297A20CFC22BA46C_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_B1C5014A534A5668AB9E37AC05694358" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due After Year Five </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_65EB76696EEE282B297A20CFC22BA46C_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_B1C5014A534A5668AB9E37AC05694358" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Total Payments, Due After Year Five </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_B1C5014A534A5668AB9E37AC05694358" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_B1C5014A534A5668AB9E37AC05694358" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityTotalPaymentsDueAfterYearFive_B1C5014A534A5668AB9E37AC05694358" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_2351C7780F28B6F902C120CFC22BDEBA_totalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_F488007BF4265B75A7A372D56C681ED3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total lease payments </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_2351C7780F28B6F902C120CFC22BDEBA_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_F488007BF4265B75A7A372D56C681ED3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Payments Due </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_2351C7780F28B6F902C120CFC22BDEBA_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_F488007BF4265B75A7A372D56C681ED3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Payments Due </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_F488007BF4265B75A7A372D56C681ED3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_F488007BF4265B75A7A372D56C681ED3" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue_F488007BF4265B75A7A372D56C681ED3" xlink:type="arc"/>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_B17B751D09C60B90355720CFC22CA211_negatedTotalLabel_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_74ACD8DE82BE53F4831C99C42AB6B29A" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US"> Less: Present value discount </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_B17B751D09C60B90355720CFC22CA211_label_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_74ACD8DE82BE53F4831C99C42AB6B29A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Undiscounted Excess Amount </link:label>
<link:label id="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_B17B751D09C60B90355720CFC22CA211_documentation_en-US" xlink:label="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_74ACD8DE82BE53F4831C99C42AB6B29A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating And Finance Lease, Liability, Undiscounted Excess Amount </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_74ACD8DE82BE53F4831C99C42AB6B29A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_74ACD8DE82BE53F4831C99C42AB6B29A" xlink:to="lab_wab_LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount_74ACD8DE82BE53F4831C99C42AB6B29A" xlink:type="arc"/>
<link:label id="lab_wab_OperatingAndFinanceLeaseLiability_CA2D77B0F7FFF22115AE20CFC22C5AD6_totalLabel_en-US" xlink:label="lab_wab_OperatingAndFinanceLeaseLiability_BD316865401756F1B942F85E06EA9887" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Present value lease liabilities </link:label>
<link:label id="lab_wab_OperatingAndFinanceLeaseLiability_CA2D77B0F7FFF22115AE20CFC22C5AD6_label_en-US" xlink:label="lab_wab_OperatingAndFinanceLeaseLiability_BD316865401756F1B942F85E06EA9887" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating And Finance Lease, Liability </link:label>
<link:label id="lab_wab_OperatingAndFinanceLeaseLiability_CA2D77B0F7FFF22115AE20CFC22C5AD6_documentation_en-US" xlink:label="lab_wab_OperatingAndFinanceLeaseLiability_BD316865401756F1B942F85E06EA9887" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operating And Finance Lease, Liability </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_OperatingAndFinanceLeaseLiability" xlink:label="loc_wab_OperatingAndFinanceLeaseLiability_BD316865401756F1B942F85E06EA9887" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_OperatingAndFinanceLeaseLiability_BD316865401756F1B942F85E06EA9887" xlink:to="lab_wab_OperatingAndFinanceLeaseLiability_BD316865401756F1B942F85E06EA9887" xlink:type="arc"/>
<link:label id="lab_wab_ChangeinContractwithCustomerAssetRollForward_F7C661487CD64CF839E5DD32DB1BB99D_terseLabel_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerAssetRollForward_EAF64B7123445FBFA5958E9194C6239B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract Assets </link:label>
<link:label id="lab_wab_ChangeinContractwithCustomerAssetRollForward_F7C661487CD64CF839E5DD32DB1BB99D_label_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerAssetRollForward_EAF64B7123445FBFA5958E9194C6239B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Change in Contract with Customer Asset [Roll Forward] </link:label>
<link:label id="lab_wab_ChangeinContractwithCustomerAssetRollForward_F7C661487CD64CF839E5DD32DB1BB99D_documentation_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerAssetRollForward_EAF64B7123445FBFA5958E9194C6239B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Change in Contract with Customer Asset [Roll Forward] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ChangeinContractwithCustomerAssetRollForward" xlink:label="loc_wab_ChangeinContractwithCustomerAssetRollForward_EAF64B7123445FBFA5958E9194C6239B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ChangeinContractwithCustomerAssetRollForward_EAF64B7123445FBFA5958E9194C6239B" xlink:to="lab_wab_ChangeinContractwithCustomerAssetRollForward_EAF64B7123445FBFA5958E9194C6239B" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNet_B880A6456BD302ABFC1FDD32DB1B942A_periodStartLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_A5D623B8B30D5DB9BC1A74503ECA66E3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Balance at beginning of year </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNet_B880A6456BD302ABFC1FDD32DB1B942A_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_A5D623B8B30D5DB9BC1A74503ECA66E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, 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_ContractWithCustomerAssetNet" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_A5D623B8B30D5DB9BC1A74503ECA66E3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_A5D623B8B30D5DB9BC1A74503ECA66E3" xlink:to="lab_us-gaap_ContractWithCustomerAssetNet_A5D623B8B30D5DB9BC1A74503ECA66E3" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_A1E7DD1DB4C1E8138EA2DD32DB1B9BE3_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CBB817712FCB527EA20FCD8711B69CED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_A1E7DD1DB4C1E8138EA2DD32DB1B9BE3_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CBB817712FCB527EA20FCD8711B69CED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Increase (Decrease) for Contract Acquired in Business Combination </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination" xlink:label="loc_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CBB817712FCB527EA20FCD8711B69CED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CBB817712FCB527EA20FCD8711B69CED" xlink:to="lab_us-gaap_ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination_CBB817712FCB527EA20FCD8711B69CED" xlink:type="arc"/>
<link:label id="lab_wab_ContractWithCustomerAssetNewContractAdditions_FDBEF2D678083F5C50ABDD32DB1CBCEC_terseLabel_en-US" xlink:label="lab_wab_ContractWithCustomerAssetNewContractAdditions_9FDB18CDB104551FB25BA849D2163113" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recognized in current year </link:label>
<link:label id="lab_wab_ContractWithCustomerAssetNewContractAdditions_FDBEF2D678083F5C50ABDD32DB1CBCEC_label_en-US" xlink:label="lab_wab_ContractWithCustomerAssetNewContractAdditions_9FDB18CDB104551FB25BA849D2163113" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract With Customer Asset New Contract Additions </link:label>
<link:label id="lab_wab_ContractWithCustomerAssetNewContractAdditions_FDBEF2D678083F5C50ABDD32DB1CBCEC_documentation_en-US" xlink:label="lab_wab_ContractWithCustomerAssetNewContractAdditions_9FDB18CDB104551FB25BA849D2163113" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Contract With Customer Asset New Contract Additions </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ContractWithCustomerAssetNewContractAdditions" xlink:label="loc_wab_ContractWithCustomerAssetNewContractAdditions_9FDB18CDB104551FB25BA849D2163113" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractWithCustomerAssetNewContractAdditions_9FDB18CDB104551FB25BA849D2163113" xlink:to="lab_wab_ContractWithCustomerAssetNewContractAdditions_9FDB18CDB104551FB25BA849D2163113" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_49EFB45784EAFBEBE150DD32DB1C0D34_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_56947AAB9D7152CDBC8517E30AF67A59" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Reclassified to accounts receivable </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_49EFB45784EAFBEBE150DD32DB1C0D34_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_56947AAB9D7152CDBC8517E30AF67A59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Reclassified to Receivable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetReclassifiedToReceivable" xlink:label="loc_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_56947AAB9D7152CDBC8517E30AF67A59" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_56947AAB9D7152CDBC8517E30AF67A59" xlink:to="lab_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_56947AAB9D7152CDBC8517E30AF67A59" xlink:type="arc"/>
<link:label id="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_976D15F08D9F0F4A1710DD32DB1C47C0_terseLabel_en-US" xlink:label="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_66DD5372C2B15E3DAF8C74D0C343B6C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency impact </link:label>
<link:label id="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_976D15F08D9F0F4A1710DD32DB1C47C0_label_en-US" xlink:label="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_66DD5372C2B15E3DAF8C74D0C343B6C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment </link:label>
<link:label id="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_976D15F08D9F0F4A1710DD32DB1C47C0_documentation_en-US" xlink:label="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_66DD5372C2B15E3DAF8C74D0C343B6C8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment" xlink:label="loc_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_66DD5372C2B15E3DAF8C74D0C343B6C8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_66DD5372C2B15E3DAF8C74D0C343B6C8" xlink:to="lab_wab_ContractWithCustomerAssetIncreaseDecreaseForeignCurrencyTranslationAdjustment_66DD5372C2B15E3DAF8C74D0C343B6C8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNet_D5A29633201DE4DA563FDD32DB1CFDD9_periodEndLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_90528AB90E34508ABB79B3D031DA48D9" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Balance 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_ContractWithCustomerAssetNet" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_90528AB90E34508ABB79B3D031DA48D9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_90528AB90E34508ABB79B3D031DA48D9" xlink:to="lab_us-gaap_ContractWithCustomerAssetNet_90528AB90E34508ABB79B3D031DA48D9" xlink:type="arc"/>
<link:label id="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_936093579C8BA75F7ABEDD32DB1CCD2C_terseLabel_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_167C33A4973154BE8954F8349327B309" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract Liabilities </link:label>
<link:label id="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_936093579C8BA75F7ABEDD32DB1CCD2C_label_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_167C33A4973154BE8954F8349327B309" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Change in Contract with Customer Liability [Roll Forward] </link:label>
<link:label id="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_936093579C8BA75F7ABEDD32DB1CCD2C_documentation_en-US" xlink:label="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_167C33A4973154BE8954F8349327B309" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Change in Contract with Customer Liability [Roll Forward] </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ChangeinContractwithCustomerLiabilityRollForward" xlink:label="loc_wab_ChangeinContractwithCustomerLiabilityRollForward_167C33A4973154BE8954F8349327B309" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ChangeinContractwithCustomerLiabilityRollForward_167C33A4973154BE8954F8349327B309" xlink:to="lab_wab_ChangeinContractwithCustomerLiabilityRollForward_167C33A4973154BE8954F8349327B309" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerLiability_FD60E94DC6DCCECAE478DD32DB1CE2A4_periodStartLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_F80367F91BE15557849D6C3C67A8953C" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Balance at beginning of year </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiability_FD60E94DC6DCCECAE478DD32DB1CE2A4_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_F80367F91BE15557849D6C3C67A8953C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="loc_us-gaap_ContractWithCustomerLiability_F80367F91BE15557849D6C3C67A8953C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiability_F80367F91BE15557849D6C3C67A8953C" xlink:to="lab_us-gaap_ContractWithCustomerLiability_F80367F91BE15557849D6C3C67A8953C" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_74F18EF8096E4F05839BDD32DB1D6126_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_8BC2117DB57C515EA4DC0E24DE678DCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_74F18EF8096E4F05839BDD32DB1D6126_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_8BC2117DB57C515EA4DC0E24DE678DCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_8BC2117DB57C515EA4DC0E24DE678DCD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_8BC2117DB57C515EA4DC0E24DE678DCD" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination_8BC2117DB57C515EA4DC0E24DE678DCD" xlink:type="arc"/>
<link:label id="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_7D54C3C6D392DB49A2A0DD32DB1DDC61_terseLabel_en-US" xlink:label="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_5AFF6CE583325952B7D2FF239569A24E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recognized in current year </link:label>
<link:label id="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_7D54C3C6D392DB49A2A0DD32DB1DDC61_label_en-US" xlink:label="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_5AFF6CE583325952B7D2FF239569A24E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract With Customer Liability New Contract Additions </link:label>
<link:label id="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_7D54C3C6D392DB49A2A0DD32DB1DDC61_documentation_en-US" xlink:label="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_5AFF6CE583325952B7D2FF239569A24E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Contract With Customer Liability New Contract Additions </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ContractWithCustomerLiabilityNewContractAdditions" xlink:label="loc_wab_ContractWithCustomerLiabilityNewContractAdditions_5AFF6CE583325952B7D2FF239569A24E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractWithCustomerLiabilityNewContractAdditions_5AFF6CE583325952B7D2FF239569A24E" xlink:to="lab_wab_ContractWithCustomerLiabilityNewContractAdditions_5AFF6CE583325952B7D2FF239569A24E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_F4379A940392C3E009F8DD32DB1D9E0E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_AF9E7F8CFD2553A08F04D18DCE035C86" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Amounts in beginning balance reclassified to revenue </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_F4379A940392C3E009F8DD32DB1D9E0E_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_AF9E7F8CFD2553A08F04D18DCE035C86" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability, Revenue Recognized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_AF9E7F8CFD2553A08F04D18DCE035C86" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_AF9E7F8CFD2553A08F04D18DCE035C86" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_AF9E7F8CFD2553A08F04D18DCE035C86" xlink:type="arc"/>
<link:label id="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_1941ABC5D078054E164ADD32DB1D48D6_negatedTerseLabel_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_014C7A15527758169703E65BDA5D0152" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Current year amounts reclassified to revenue </link:label>
<link:label id="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_1941ABC5D078054E164ADD32DB1D48D6_label_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_014C7A15527758169703E65BDA5D0152" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer Liability Revenue Recognized from Current Year Additions </link:label>
<link:label id="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_1941ABC5D078054E164ADD32DB1D48D6_documentation_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_014C7A15527758169703E65BDA5D0152" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Contract with Customer Liability Revenue Recognized from Current Year Additions </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions" xlink:label="loc_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_014C7A15527758169703E65BDA5D0152" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_014C7A15527758169703E65BDA5D0152" xlink:to="lab_wab_ContractwithCustomerLiabilityRevenueRecognizedfromCurrentYearAdditions_014C7A15527758169703E65BDA5D0152" xlink:type="arc"/>
<link:label id="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_7AEDD476FC4CF7BE7185DD32DB1D91F9_terseLabel_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_AB67704FAE4C5730B3163C12B999DC63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency impact </link:label>
<link:label id="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_7AEDD476FC4CF7BE7185DD32DB1D91F9_label_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_AB67704FAE4C5730B3163C12B999DC63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer Liability Increase (Decrease) Foreign Currency Translation Adjustment </link:label>
<link:label id="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_7AEDD476FC4CF7BE7185DD32DB1D91F9_documentation_en-US" xlink:label="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_AB67704FAE4C5730B3163C12B999DC63" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Contract with Customer Liability Increase (Decrease) Foreign Currency Translation Adjustment </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment" xlink:label="loc_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_AB67704FAE4C5730B3163C12B999DC63" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_AB67704FAE4C5730B3163C12B999DC63" xlink:to="lab_wab_ContractwithCustomerLiabilityIncreaseDecreaseForeignCurrencyTranslationAdjustment_AB67704FAE4C5730B3163C12B999DC63" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerLiability_725E669C3192039B76A7DD32DB1E0DD4_periodEndLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_73BC7A397104591F8895ECB126515BE0" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Balance 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_ContractWithCustomerLiability" xlink:label="loc_us-gaap_ContractWithCustomerLiability_73BC7A397104591F8895ECB126515BE0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiability_73BC7A397104591F8895ECB126515BE0" xlink:to="lab_us-gaap_ContractWithCustomerLiability_73BC7A397104591F8895ECB126515BE0" xlink:type="arc"/>
<link:label id="lab_dei_CoverAbstract_4DD3E545AFB6BB25651723049411EE48_label_en-US" xlink:label="lab_dei_CoverAbstract_4DD3E545AFB6BB25651723049411EE48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cover page. </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CoverAbstract" xlink:label="loc_dei_CoverAbstract_4DD3E545AFB6BB25651723049411EE48" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CoverAbstract_4DD3E545AFB6BB25651723049411EE48" xlink:to="lab_dei_CoverAbstract_4DD3E545AFB6BB25651723049411EE48" xlink:type="arc"/>
<link:label id="lab_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A_terseLabel_en-US" xlink:label="lab_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entities [Table] </link:label>
<link:label id="lab_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A_label_en-US" xlink:label="lab_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entities [Table] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitiesTable" xlink:label="loc_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A" xlink:to="lab_dei_EntitiesTable_BF2268AAA6A2CE423A1B23052E4DAA6A" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7_terseLabel_en-US" xlink:label="lab_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Addresses, Address Type [Axis] </link:label>
<link:label id="lab_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7_label_en-US" xlink:label="lab_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Addresses, Address Type [Axis] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressesAddressTypeAxis" xlink:label="loc_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7" xlink:to="lab_dei_EntityAddressesAddressTypeAxis_015A44D08F4673EC99B423055D9FEFB7" xlink:type="arc"/>
<link:label id="lab_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A_terseLabel_en-US" xlink:label="lab_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Address Type [Domain] </link:label>
<link:label id="lab_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A_label_en-US" xlink:label="lab_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Address Type [Domain] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AddressTypeDomain" xlink:label="loc_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A" xlink:to="lab_dei_AddressTypeDomain_5550C37F8D32DC8953C5230598BF816A" xlink:type="arc"/>
<link:label id="lab_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB_terseLabel_en-US" xlink:label="lab_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Former Address </link:label>
<link:label id="lab_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB_label_en-US" xlink:label="lab_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Former Address [Member] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_FormerAddressMember" xlink:label="loc_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB" xlink:to="lab_dei_FormerAddressMember_BA4B3AA343F9EC64DB3C2305B7C16ECB" xlink:type="arc"/>
<link:label id="lab_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49_terseLabel_en-US" xlink:label="lab_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Information [Line Items] </link:label>
<link:label id="lab_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49_label_en-US" xlink:label="lab_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Information [Line Items] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInformationLineItems" xlink:label="loc_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49" xlink:to="lab_dei_EntityInformationLineItems_B32AEC9853C665C9488623052E4E4E49" xlink:type="arc"/>
<link:label id="lab_dei_DocumentType_E081A315725C7D0DF28F23049415DC25_terseLabel_en-US" xlink:label="lab_dei_DocumentType_E081A315725C7D0DF28F23049415DC25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:label id="lab_dei_DocumentType_E081A315725C7D0DF28F23049415DC25_label_en-US" xlink:label="lab_dei_DocumentType_E081A315725C7D0DF28F23049415DC25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_E081A315725C7D0DF28F23049415DC25" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_E081A315725C7D0DF28F23049415DC25" xlink:to="lab_dei_DocumentType_E081A315725C7D0DF28F23049415DC25" xlink:type="arc"/>
<link:label id="lab_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD_terseLabel_en-US" xlink:label="lab_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Quarterly Report </link:label>
<link:label id="lab_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD_label_en-US" xlink:label="lab_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Quarterly Report </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentQuarterlyReport" xlink:label="loc_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD" xlink:to="lab_dei_DocumentQuarterlyReport_6257BC68C22261C6513B2304941766AD" xlink:type="arc"/>
<link:label id="lab_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:label id="lab_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960" xlink:to="lab_dei_DocumentPeriodEndDate_A03BBA5DFF768733C35B23049418C960" xlink:type="arc"/>
<link:label id="lab_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Transition Report </link:label>
<link:label id="lab_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751_label_en-US" xlink:label="lab_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Transition Report </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentTransitionReport" xlink:label="loc_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751" xlink:to="lab_dei_DocumentTransitionReport_AED1E83C9DF76EBC8F80230494188751" xlink:type="arc"/>
<link:label id="lab_dei_EntityFileNumber_094D769B5FED2048D05323049418EA70_terseLabel_en-US" xlink:label="lab_dei_EntityFileNumber_094D769B5FED2048D05323049418EA70" 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_094D769B5FED2048D05323049418EA70_label_en-US" xlink:label="lab_dei_EntityFileNumber_094D769B5FED2048D05323049418EA70" 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_094D769B5FED2048D05323049418EA70" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFileNumber_094D769B5FED2048D05323049418EA70" xlink:to="lab_dei_EntityFileNumber_094D769B5FED2048D05323049418EA70" xlink:type="arc"/>
<link:label id="lab_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:label id="lab_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D_label_en-US" xlink:label="lab_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D" xlink:to="lab_dei_EntityRegistrantName_A673681DDBE806A71F8523049418314D" xlink:type="arc"/>
<link:label id="lab_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Incorporation, State or Country Code </link:label>
<link:label id="lab_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF_label_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Incorporation, State or Country Code </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="loc_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF" xlink:to="lab_dei_EntityIncorporationStateCountryCode_7E4E9BA3B47DFEC5792D230494189EDF" xlink:type="arc"/>
<link:label id="lab_dei_EntityTaxIdentificationNumber_8963ED957CB6E7B412B323049419DBC2_terseLabel_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber_8963ED957CB6E7B412B323049419DBC2" 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_8963ED957CB6E7B412B323049419DBC2_label_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber_8963ED957CB6E7B412B323049419DBC2" 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_8963ED957CB6E7B412B323049419DBC2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityTaxIdentificationNumber_8963ED957CB6E7B412B323049419DBC2" xlink:to="lab_dei_EntityTaxIdentificationNumber_8963ED957CB6E7B412B323049419DBC2" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, Address Line One </link:label>
<link:label id="lab_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7_label_en-US" xlink:label="lab_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, Address Line One </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:label="loc_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7" xlink:to="lab_dei_EntityAddressAddressLine1_E704595560C63577CC3823049419A4B7" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, City or Town </link:label>
<link:label id="lab_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13_label_en-US" xlink:label="lab_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, City or Town </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:label="loc_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13" xlink:to="lab_dei_EntityAddressCityOrTown_2948273CE05FC546E140230494197F13" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87_terseLabel_en-US" xlink:label="lab_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, State or Province </link:label>
<link:label id="lab_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87_label_en-US" xlink:label="lab_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, State or Province </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:label="loc_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87" xlink:to="lab_dei_EntityAddressStateOrProvince_47F9EBD661C5EA81E760230494198C87" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressPostalZipCode_F675A7677068374103A7230494194BEB_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode_F675A7677068374103A7230494194BEB" 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_F675A7677068374103A7230494194BEB_label_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode_F675A7677068374103A7230494194BEB" 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_F675A7677068374103A7230494194BEB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressPostalZipCode_F675A7677068374103A7230494194BEB" xlink:to="lab_dei_EntityAddressPostalZipCode_F675A7677068374103A7230494194BEB" xlink:type="arc"/>
<link:label id="lab_dei_CityAreaCode_BBD18786E7360D7986D723049419F563_terseLabel_en-US" xlink:label="lab_dei_CityAreaCode_BBD18786E7360D7986D723049419F563" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> City Area Code </link:label>
<link:label id="lab_dei_CityAreaCode_BBD18786E7360D7986D723049419F563_label_en-US" xlink:label="lab_dei_CityAreaCode_BBD18786E7360D7986D723049419F563" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> City Area Code </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:label="loc_dei_CityAreaCode_BBD18786E7360D7986D723049419F563" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CityAreaCode_BBD18786E7360D7986D723049419F563" xlink:to="lab_dei_CityAreaCode_BBD18786E7360D7986D723049419F563" xlink:type="arc"/>
<link:label id="lab_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Local Phone Number </link:label>
<link:label id="lab_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0_label_en-US" xlink:label="lab_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Local Phone Number </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:label="loc_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0" xlink:to="lab_dei_LocalPhoneNumber_697F14F77207FA5BAC9E2304941A12D0" xlink:type="arc"/>
<link:label id="lab_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1_terseLabel_en-US" xlink:label="lab_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Title of 12(b) Security </link:label>
<link:label id="lab_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1_label_en-US" xlink:label="lab_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of 12(b) Security </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:label="loc_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1" xlink:to="lab_dei_Security12bTitle_086D20B97B9F170A02192304941A71D1" xlink:type="arc"/>
<link:label id="lab_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trading Symbol </link:label>
<link:label id="lab_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E_label_en-US" xlink:label="lab_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Trading Symbol </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E" xlink:to="lab_dei_TradingSymbol_6F203DCF811BAD3C1C6B2304941AF95E" xlink:type="arc"/>
<link:label id="lab_dei_SecurityExchangeName_80912D9D66FAAF56921E2304941A9BC9_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName_80912D9D66FAAF56921E2304941A9BC9" 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_80912D9D66FAAF56921E2304941A9BC9_label_en-US" xlink:label="lab_dei_SecurityExchangeName_80912D9D66FAAF56921E2304941A9BC9" 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_80912D9D66FAAF56921E2304941A9BC9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_SecurityExchangeName_80912D9D66FAAF56921E2304941A9BC9" xlink:to="lab_dei_SecurityExchangeName_80912D9D66FAAF56921E2304941A9BC9" xlink:type="arc"/>
<link:label id="lab_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Current Reporting Status </link:label>
<link:label id="lab_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Current Reporting Status </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE" xlink:to="lab_dei_EntityCurrentReportingStatus_EF617287D56843F997722304941AE8FE" xlink:type="arc"/>
<link:label id="lab_dei_EntityInteractiveDataCurrent_0D0064ACB6796A2C9DE32304941BBEF2_terseLabel_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent_0D0064ACB6796A2C9DE32304941BBEF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Interactive Data Current </link:label>
<link:label id="lab_dei_EntityInteractiveDataCurrent_0D0064ACB6796A2C9DE32304941BBEF2_label_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent_0D0064ACB6796A2C9DE32304941BBEF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Interactive Data Current </link:label>
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<link:label id="lab_us-gaap_LeaseCostTableTextBlock_BB4849DC704751A2CF535FC3E6DCFF40_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_BB4849DC704751A2CF535FC3E6DCFF40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lease Expense, Term and Discount Rate </link:label>
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<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted cash </link:label>
<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Cash and Cash Equivalents, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_357D3B61B67C4B52875D12D8FC81814D" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts receivable </link:label>
<link:label id="lab_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, after Allowance for Credit Loss, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_C205B3203910EAE9BB1612D8FC81ABC8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unbilled accounts receivables </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Net, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetNetCurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D" xlink:to="lab_us-gaap_ContractWithCustomerAssetNetCurrent_F0D3B0DC44A1393A382B12D8FC82259D" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065" xlink:to="lab_us-gaap_OtherAssetsCurrent_8463E7D3FFBF0408C19112D8FC82F065" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_F5EE0078C867B8E1CB9612D8FC8205E7_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_F5EE0078C867B8E1CB9612D8FC8205E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, plant and equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_F5EE0078C867B8E1CB9612D8FC8205E7_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_F5EE0078C867B8E1CB9612D8FC8205E7" 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_F5EE0078C867B8E1CB9612D8FC8205E7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_F5EE0078C867B8E1CB9612D8FC8205E7" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_F5EE0078C867B8E1CB9612D8FC8205E7" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2B74326CC000D2F42F4512D8FC83FDC2_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2B74326CC000D2F42F4512D8FC83FDC2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Accumulated depreciation </link:label>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2B74326CC000D2F42F4512D8FC83FDC2_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2B74326CC000D2F42F4512D8FC83FDC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </link:label>
<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_2B74326CC000D2F42F4512D8FC83FDC2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2B74326CC000D2F42F4512D8FC83FDC2" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_2B74326CC000D2F42F4512D8FC83FDC2" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_0B805BD25CCF3F9F72AC12D8FC832FBB_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_0B805BD25CCF3F9F72AC12D8FC832FBB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" 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_0B805BD25CCF3F9F72AC12D8FC832FBB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_0B805BD25CCF3F9F72AC12D8FC832FBB" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_0B805BD25CCF3F9F72AC12D8FC832FBB" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6" 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_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6" xlink:to="lab_us-gaap_OtherAssetsNoncurrentAbstract_10B8D512BFDF586A30EF12D8FC8341C6" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_BDE663A766C1C01A72A712D8FC841FA2_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_BDE663A766C1C01A72A712D8FC841FA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other noncurrent assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_BDE663A766C1C01A72A712D8FC841FA2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_BDE663A766C1C01A72A712D8FC841FA2" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_BDE663A766C1C01A72A712D8FC841FA2" xlink:type="arc"/>
<link:label id="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD_totalLabel_en-US" xlink:label="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total other assets </link:label>
<link:label id="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD_label_en-US" xlink:label="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets Non Current Including Goodwill And Intangible Assets Net </link:label>
<link:label id="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD_documentation_en-US" xlink:label="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other Non-Current Assets that includes Goodwill, Other Intangibles net, and Other noncurrent assets. </link:label>
<link:loc xlink:href="wab-20190930.xsd#wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet" xlink:label="loc_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD" xlink:to="lab_wab_OtherAssetsNonCurrentIncludingGoodwillAndIntangibleAssetsNet_339644C2BE2603BD376312D8FC845DAD" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities and Shareholders’ Equity </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6436562D5EF930C7D8DA12D8FC849958" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_84F8B2C5B6D068E96EC212D8FC841E32" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
<link:label id="lab_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F" xlink:to="lab_us-gaap_AccountsPayableCurrent_6712786227BC60D0EF2E12D8FC84786F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Customer deposits </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428" xlink:to="lab_us-gaap_ContractWithCustomerLiabilityCurrent_CF4E8C8CA9057210F29712D8FC85F428" xlink:type="arc"/>
<link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued compensation </link:label>
<link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Employee-related Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71" xlink:to="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F2DB755827778416BBF412D8FC85ED71" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_4EF09294F1B3767E92A712D8FC85AF6A_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_4EF09294F1B3767E92A712D8FC85AF6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued warranty </link:label>
<link:label id="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_4EF09294F1B3767E92A712D8FC85AF6A_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_4EF09294F1B3767E92A712D8FC85AF6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product Warranty Accrual, Current </link:label>
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<link:label id="lab_us-gaap_LiabilitiesCurrent_9D2DBDC75F7C1A14251712D8FC8617EB_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_9D2DBDC75F7C1A14251712D8FC8617EB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_9D2DBDC75F7C1A14251712D8FC8617EB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_0308FF8F42B4E4B7B73712D8FC862633_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_0308FF8F42B4E4B7B73712D8FC862633" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued postretirement and pension benefits </link:label>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_0308FF8F42B4E4B7B73712D8FC862633_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_0308FF8F42B4E4B7B73712D8FC862633" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liability, Defined Benefit Plan, Noncurrent </link:label>
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<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_4FFD1A2A2F237371F6B412D8FC86F28B_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_4FFD1A2A2F237371F6B412D8FC86F28B" 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_DeferredIncomeTaxLiabilitiesNet_4FFD1A2A2F237371F6B412D8FC86F28B_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_4FFD1A2A2F237371F6B412D8FC86F28B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Tax Liabilities, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_4FFD1A2A2F237371F6B412D8FC86F28B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_E7BDABC72AB762AD8CAC12D8FC87FA60_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_E7BDABC72AB762AD8CAC12D8FC87FA60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Liabilities, Noncurrent </link:label>
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<link:label id="lab_us-gaap_CommitmentsAndContingencies_C0930336AA0BE865698712D8FC87C040_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_C0930336AA0BE865698712D8FC87C040" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments and contingencies (Note 16) </link:label>
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<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_8614D8B3E7F74037FB0412D8FC871D48_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_8614D8B3E7F74037FB0412D8FC871D48" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity </link:label>
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<link:label id="lab_us-gaap_PreferredStockValue_ED3476A46DBA7215119012D8FC873215_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue_ED3476A46DBA7215119012D8FC873215" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible preferred stock, $.01 par value; 1,000,000 shares authorized, no shares issued and outstanding, at September 30, 2019 and December 31, 2018 </link:label>
<link:label id="lab_us-gaap_PreferredStockValue_ED3476A46DBA7215119012D8FC873215_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue_ED3476A46DBA7215119012D8FC873215" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preferred Stock, Value, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_ED3476A46DBA7215119012D8FC873215" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockValue_A45361717F3548CC880B12D8FC8837DA_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_A45361717F3548CC880B12D8FC8837DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, $.01 par value; 500,000,000 shares authorized: 226,947,180 and 132,349,534 shares issued and 191,676,482 and 96,614,946 outstanding at September 30, 2019 and December 31, 2018, respectively </link:label>
<link:label id="lab_us-gaap_CommonStockValue_A45361717F3548CC880B12D8FC8837DA_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_A45361717F3548CC880B12D8FC8837DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Value, Issued </link:label>
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<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_428A62B7C66A9FD9122212D8FC881186_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_428A62B7C66A9FD9122212D8FC881186" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional paid-in capital </link:label>
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<link:label id="lab_us-gaap_TreasuryStockValue_3E3BF541EFBCA4ACEA4512D8FC881ADA_negatedLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_3E3BF541EFBCA4ACEA4512D8FC881ADA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Treasury stock, at cost, 35,270,698 and 35,734,588 shares, at September 30, 2019 and December 31, 2018, respectively </link:label>
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<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_3F7CC1E05C1FAA39EAFC12D8FC88E904_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_3F7CC1E05C1FAA39EAFC12D8FC88E904" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings (Accumulated Deficit) </link:label>
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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_208D98D4C6240FE2CBD312D8FC8AF442_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_208D98D4C6240FE2CBD312D8FC8AF442" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated other comprehensive loss </link:label>
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