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DT
Person · officer / director

Daniel T O'Brien

Bus. Manager/Finance. Sec · United Association of Journeymen and Apprentices of the Plumbing & Pipeftting

Bus. Manager/Finance. Sec at United Association of Journeymen and Apprentices of the Plumbing & Pipeftting. Listed as an officer, director, or key employee across 5 organizations on the Form 990 record.

Ambiguous identity This name matches 1 other individual we could not verify as the same person. Each is kept as a separate record below — treat them as distinct people unless an explicit match is confirmed.
Organizations
5
Roles reported
5
Reported compensation
$295K
Others who share this name
1

Who this is

Profile

Everything on the left is verified from the IRS filings. The biography on the right is compiled from public web sources and grounded to that filed record.

✓ Verified from filings
●
Reported as Bus. Manager/Finance. Sec of United Association of Journeymen and Apprentices of the Plumbing & Pipeftting, based in Dorchester, MA.
●
Received $295K in total reported compensation on the most recent Form 990 (Part VII).
●
●
Also listed as President/Director of Pipefitters Charitable Fund, uncompensated.
Facts extracted directly from each organization's Form 990, Part VII.
Biography In progress
We're building a sourced biography for every person — from filings, news, and public records, citing where each fact comes from. Person-name searches are our single largest source of demand, so this is what we're shipping next.

Affiliations

Organizations

Linked as the same person by IRS Schedule R, a shared officer mailing address, or shared fellow board members.

United Association of Journeymen and Apprentices of the Plumbing & Pipeftting Bus. Manager/Finance. Sec · $8.0M revenue · Dorchester, MATHE OBJECTIVES OF LOCAL #537 ARE TO PROTECT ITS MEMBERS FROM UNJUST AND INJURIOUS COMPETITION; TO ASSIST SICK AND DISTRESSED MEMBERS, AND TO HELP…pay $157K → $295KFiled FY2025, FY2024, FY2023, FY2022, FY2021 · Source: Form 990, Part VII
$295Kreported comp
Pipefitters Association Local Union 537 Nemca Labor Management Cooperation Trust Chairman/Trustee · $12.6M revenue · Dorchester, MATO IDENTIFY AND EXPAND WORK OPPORTUNITIES, IMPROVE COMMUNICATIONS, PROMOTE EFFICIENCY IN OPERATIONS, PROMOTE HEALTH AND SAFETY, AND TO ESTABLISH AND…Filed FY2024, FY2023 · Source: Form 990, Part VII
P
Pipefitters Charitable Fund President/Director · $77K revenue · Dorchester, MAFiled FY2024, FY2023, FY2022, FY2021 · Source: Form 990, Part VII
P
Pipefitters Union Local 537 Vacation Fund Trustee · $6.2M revenue · Dorchester, MAPROVIDE MEMBERS WITH VACATION BENEFITSFiled FY2024, FY2023, FY2022 · Source: Form 990, Part VII
P
Pipefitters Union Local 537 Health and Welfare Fund Trustee · $63.1M revenue · Dorchester, MAHEALTH & WELFARE BENEFITSFiled FY2024, FY2023, FY2022, FY2021, FY2020 · Source: Form 990, Part VII

Disambiguation

Other people named Daniel T O'Brien

Different individuals who share this name, separated by IRS Schedule R, mailing address, and shared-board evidence. The 990 carries no person identifier, so some may still be the same person.

D
Daniel T O'Brien 1 organization · Woodland, CAProject Recover INC

Network

Serves alongside

Other officers, directors & key employees at this person's organizations, by latest reported compensation.

B
Business Agent · FY2025
$229K
D
Assistant Business Manager · FY2025
$229K
J
Business Agent · FY2025
$229K
C
Organizer · FY2025
$224K
T
Ua Organizer · FY2025
$222K
T
Bus. Manager/Finance. Sec · FY2020
$196K
A
Executive Board · FY2025
$128K
J
Business Agent · FY2025
$122K
T
Former Bus. Manager/Finance. Sec · FY2022
$114K
P
Former Assistant Business Manager · FY2022
$99K
T
Business Agent · FY2021
$40K
J
Finance Committee · FY2024
$11K

Network

Recommendations

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Similar organizations

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G
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Public data from IRS Form 990 e-file & the Business Master File. Individuals appear here because they were named as an officer, director, or key employee on a nonprofit's Form 990; people are grouped by name plus corroborating evidence (Schedule R, shared address, shared board members). · philanthropy.org