Defined Benefit (Pension) · DOL Form 5500 · 2023

Pipe & Refrigeration Fitters Local 537 Pension Plan

Data updated 2026-08-25

$902M
Total assets Above avg plan size
2,202
Participants Above avg headcount
98th
Percentile by assets National rank
$409,508
Avg per participant High balance/head
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Official DOL plan name: Pipefitters Union Local No. 537 Pension Fund · Sponsored by Pipe & Refrigeration Fitters Local 537 · Massachusetts · Construction

$902M in assets, 2,202 participants

Pipe & Refrigeration Fitters Local 537's Pipefitters Union Local No. 537 Pension Fund reported $902M in total assets and 2,202 participants in its 2023 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.

  • #8,895 in Construction (9,030 peers)

Coverage in Massachusetts

Pipefitters Union Local No. 537 Pension Fund covers 2,202 participants in Massachusetts, 3.3x the typical Massachusetts plan (state average ~659 per filing). Assets: $902M.

#8,895
in Construction (9,030 peers)
+8.9%
assets growth YoY
9.0×
vs typical plan assets (national mean)

Pipefitters Union Local No. 537 Pension Fund's outsized position by total assets

Pipefitters Union Local No. 537 Pension Fund vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$901,736,197 Top 2% higher than 98% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Pipefitters Union Local No. 537 Pension Fund's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Pipefitters Union Local No. 537 Pension Fund lands in the large band (2,202 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Pipefitters Union Local No. 537 Pension Fund reported net income rose from -$29M in the plan year 2022 filing to $82M in the plan year 2023 filing.
  • Pipefitters Union Local No. 537 Pension Fund end-of-year assets rose from $828M in the plan year 2022 filing to $902M in the plan year 2023 filing.
  • Pipefitters Union Local No. 537 Pension Fund reported participants rose from 2,107 in the plan year 2022 filing to 2,202 in the plan year 2023 filing.

See the national 2022→2023 release diff →

DOL schedule card

Filing strip 516030859 · Pipe & Refrigeration Fitters Local 537 PY 2023 · Defined Benefit (Pension)

Pipefitters Union Local No. 537 Pension Fund · $902M · 2,202 · 98th

  • EOY $902M
  • 5500 2,202
  • ASSETS 98th
  • PCT Defined Benefit (Pension)
  • EIN near Entergy Corporation Retirement Plan for Bargaining Employees
  • RANK ind #8895

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Construction retirement plans → · Plans in Massachusetts →

Pipefitters Union Local No. 537 Pension Fund in the asset neighbourhood

Goldman Sachs Employees' Pension PlanGoldman Sachs Employees' Pen…$905MEntergy Corporation Retirement Plan for Bargaining EmployeesEntergy Corporation Retireme…$903MPipefitters Union Local No. 537 Pension FundPipefitters Union Local No. …$902MU.a. Local No. 393 Defined Benefit Pension PlanU.a. Local No. 393 Defined B…$899MInternational Association of Machinists and Aerospace Workers Pension PlanInternational Association of…$896M
End-of-year total assets ($M) among Pipefitters Union Local No. 537 Pension Fund and nearest nationwide Defined Benefit (Pension) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$828M
Net Assets (End of Year)$875M
Net Income$82M
Employer EIN516030859
Plan Effective Date1956-03-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Pipe & Refrigeration Fitters Local 537)

Sponsor-wide plan assets over time

All Pipe & Refrigeration Fitters Local 537 plans reported in each filing year

Latest sponsor-wide plan assets
$962M 16.188723957316085% vs 2022
2024 filing year
$800M$850M$900M$950M$1,000M 202220232024 $828M $962M ▲ +16.2%
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 Scatter plot of 6 data points. -20000020000400006000080000 051015 Total assets ($B) Participants Pipefitters Union Local No. 537 Pension Fund, Total assets ($B): 0.901736197 · Participants: 2202Pipefitters Union Local No. 537 Pension FundConsolidated Cash Balance Program of Mass General Brigham and Member Organizations, Total assets ($B): 10.325856564 · Participants: 58745Consolidated Cash Balance Program of Mass General Brigham and Member OrganizationsNew England Teamsters Pension Fund, Total assets ($B): 9.092299586 · Participants: 21786New England Teamsters Pension FundLiberty Mutual Retirement Benefit Plan, Total assets ($B): 6.892259637 · Participants: 37145Liberty Mutual Retirement Benefit PlanMassachusetts Institute of Technology Basic Retirement Plan, Total assets ($B): 5.381626447 · Participants: 11888Massachusetts Institute of Technology Basic Retirement PlanN. Atlantic States Carp. Pension Fund, Total assets ($B): 4.973349354 · Participants: 17166N. Atlantic States Carp. Pension Fund
Pipefitters Union Local No. 537 Pension Fund vs. nearby Defined Benefit (Pension) plans in Massachusetts, assets vs. participants
Compare Pipefitters Union Local No. 537 Pension Fund side-by-side with 3 peers →

Pipefitters Union Local No. 537 Pension Fund's out-of-state Defined Benefit (Pension) peers by assets and headcount

Outside Massachusetts, the nearest Defined Benefit (Pension) by assets is Entergy Corporation Retirement Plan for Bargaining Employees in LA ($903M); by covered participants it is Pension Plan of North Carolina Baptist Hospital in NC (2,201 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (2,202 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Pipefitters Union Local No. 537 Pension Fund assets move in 2023? ▼
Pipefitters Union Local No. 537 Pension Fund grew at a solid clip - up 8.9% during 2023, from $828M to $902M. Reported net income was $82M.
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 127,072 plans that reported assets for plan year 2023 (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 Entergy Corporation Retirement Plan for Bargaining Employees in LA ($903M, 2,424 participants).
Which Defined Benefit (Pension) plans cover a similar participant headcount to Pipefitters Union Local No. 537 Pension Fund? ▼
Among Defined Benefit (Pension) plans in other states, the closest by covered participants is Pension Plan of North Carolina Baptist Hospital in NC (2,201 participants, $327M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

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.