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Employees International Union of Operating Engineers Local No 399 William Masterson

William Masterson

OfficerTrustee/director

Vice President and Business Agent at International Union of Operating Engineers Local No 399

Fiscal year ended June 30, 2023. Published on January 25, 2026.

$228,949
2023

Total compensation

William Masterson has been listed as an employee of International Union of Operating Engineers Local No 399 in Form 990 filings since fiscal year 2019. Total compensation for William Masterson has increased by 10.4% from 2019 to 2023.

Annual compensation details

$228,949
+4.1%
Vice President and Business Agent
2023
$175k org
40 hrs/wk
$55k other
--
$219,975
-1.9%
Vice President and Business Agent
2022
$168k org
40 hrs/wk
$53k other
--

Total compensation by year

Compare the compensation of William Masterson to:

2023

Other employees at International Union of Operating Engineers Local No 399

Patrick Kelly
President and Business Manager
$247,554
$192,417 from orgNo related comp$55,137 other
Valerie Colvett
Business Agent
$234,769
$179,865 from orgNo related comp$54,904 other
Roger McGinty
FIN Secretary/Business AG
$232,976
$178,576 from orgNo related comp$54,400 other
Vince Winters
REC Secretary/Business AG
$229,524
$175,292 from orgNo related comp$54,232 other
Lloyd Osborne
Executive Board/Business A
$215,149
$161,373 from orgNo related comp$53,776 other
John Hanley
Legislative Director
$214,949
$161,293 from orgNo related comp$53,656 other
Michael Masterson
Business Agent
$214,135
$160,221 from orgNo related comp$53,914 other
John Oconnor
Organizer
$212,807
$159,229 from orgNo related comp$53,578 other
Adelmo Marchiori
Auditor/Business Agent
$207,738
$154,299 from orgNo related comp$53,439 other
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Revisions to this profile

January 25, 2026:
2023 International Union of Operating Engineers Local No 399 990 published
January 25, 2026:
2022 International Union of Operating Engineers Local No 399 990 published
January 25, 2026:
2021 International Union of Operating Engineers Local No 399 990 published

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$224,179
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2021
$174k org
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$218,750
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$207,395
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$158k org
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$51k other
--

Other people named William Masterson

2023
Employee
William Masterson
International Union of Operating Engineers Local 399 Building Corp.
$228,949
Employee
William Masterson
International Union of Operating Engineers Local 399 Building Corp. Ii
$228,949
Employee
William Masterson
International Union of Operating Engineers Local 399 Health & Welfare Tru
$218,750
Employee
William Masterson
International Union of Operating Engineers Local 399 Health Reimbursement Account Plan
$218,750
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William Masterson
International Union of Operating Engineers Local 399 Building Corp.
$203,366
Employee
William Masterson
International Union of Operating Engineers Local No 399
$203,366