Defined Benefit (Pension) · DOL Form 5500 · 2024

Pipe & Refrigeration Fitters Local 537 Pension Plan

Data updated 2026-08-06

$962M
Total assets: 2,310
Participants: 98th
Percentile by assets: $416,615
Avg per participant

Official DOL plan name: Pipefitters Union Local No. 537 Pension Fund · Sponsored by Pipe & Refrigeration Fitters Local 537 · Massachusetts · Construction

$962M in assets, 2,310 participants

Pipe & Refrigeration Fitters Local 537's Pipefitters Union Local No. 537 Pension Fund reported $962M in total assets and 2,310 participants in its 2024 DOL Form 5500 filing, ranking in the 98th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

98th percentile by assets (of 116,472 plans)

Coverage in Massachusetts

Pipefitters Union Local No. 537 Pension Fund covers 2,310 participants in Massachusetts, 3.6x the typical Massachusetts plan (state average ~641 per filing). Assets: $962M.

$962M
total plan assets (2024 EOY): 2,310
covered participants: 98th
percentile by assets (of 116,472 plans): $416,615
avg assets per participant

Pipefitters Union Local No. 537 Pension Fund reported net income fell from $82M in the plan year 2023 filing to $61M in the plan year 2024 filing.
Pipefitters Union Local No. 537 Pension Fund end-of-year assets rose from $902M in the plan year 2023 filing to $962M in the plan year 2024 filing.
Pipefitters Union Local No. 537 Pension Fund reported participants rose from 2,202 in the plan year 2023 filing to 2,310 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Massachusetts

Industry

Construction

Participants vs Massachusetts filers

In Massachusetts, the average filing covers about 641 participants across 3,941 plans. Pipefitters Union Local No. 537 Pension Fund reports 2,310 participants - 3.6x that state average ($962M EOY assets).

Massachusetts filing particulars

Total Assets (Beginning of Year)	$902M
Net Assets (End of Year)	$936M
Net Income	$61M
Employer EIN	516030859
Plan Effective Date	1956-03-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Pipe & Refrigeration Fitters Local 537)

Total plan assets by year, all Pipe & Refrigeration Fitters Local 537 plans on file

Year	Plans	Participants	Total Assets
2022	1	2,107	$828M
2023	1	2,202	$902M
2024	1	2,310	$962M

Nearby Defined Benefit (Pension) Plans in Massachusetts

Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.

Pipefitters Union Local No. 537 Pension Fund vs. nearby Defined Benefit (Pension) plans in Massachusetts, assets vs. participants

Liberty Mutual Retirement Benefit Plan $6.3B · 34,910
Massachusetts Institute of Technology Basic Retirement Plan $5.9B · 12,533
N. Atlantic States Carp. Pension Fund $5.1B · 16,946
N. Atlantic States Carp. Guaranteed Annuity Fund $3.8B · 10,943
Massachusetts Laborers' Pension Fund $2.5B · 10,203

Compare Pipefitters Union Local No. 537 Pension … side-by-side with 3 peers →

Similar-Sized Defined Benefit (Pension) Plans Nationally

Defined Benefit (Pension) plans in other states closest to Pipefitters Union Local No. 537 Pension Fund by total assets, not by location.

Mutual of Omaha Retirement Income Plan (NE) $960M · 415
Employees' Cash Balance Plan of Atlantic Health System, Inc. (NJ) $965M · 5,100
Advocate Aurora Health Pension Plan (IL) $966M · 10,936
Pitney Bowes Pension Plan (CT) $959M · 858

Frequently Asked Questions

How did Pipefitters Union Local No. 537 Pension Fund assets move in 2024? ▼

Pipefitters Union Local No. 537 Pension Fund grew at a solid clip - up 6.7% during 2024, from $902M to $962M. Reported net income was $61M.

How have Pipe & Refrigeration Fitters Local 537 plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Pipe & Refrigeration Fitters Local 537's sponsor-wide assets grew 16.2%, from $828M to $962M.

Where does Pipefitters Union Local No. 537 Pension Fund rank by assets among Form 5500 filers? ▼

Pipefitters Union Local No. 537 Pension Fund ranks in the 98th percentile by end-of-year assets among 116,472 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).

Which Defined Benefit (Pension) plans are similar in size to Pipefitters Union Local No. 537 Pension Fund? ▼

Among Defined Benefit (Pension) plans in other states, the closest by assets is Mutual of Omaha Retirement Income Plan in NE ($960M, 415 participants).

Next read for Pipefitters Union Local No. 537 Pension …

Filing takeaways

Ways to act on Pipefitters Union Local No. 537 Pension Fund's numbers.

By total assets, Pipefitters Union Local No. 537 Pension Fund ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in Massachusetts. Compare plans
Pipe & Refrigeration Fitters Local 537's sponsor-wide assets have grown 16.2% since 2022 across 3 plan years on file. More Construction plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 516030859.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.