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"Trust" Doesn't Mean "Union": 4 Prevailing Wage Fringe Benefits Myths

Written by Shawna Coronado | Oct 22, 2026, 2:00:02 PM

What Open-Shop Contractors Should Know About Prevailing Wage Fringe Benefits

Prevailing wage fringe benefits do not require a union, and neither does a fringe trust. An open-shop contractor on a Davis-Bacon or state prevailing wage job can meet the fringe rate through a bona fide benefit plan, a third-party trust, cash on the paycheck, or a mix. The choice matters because cash fringe is usually the most expensive way to pay it.

A bona fide fringe trust is a third-party plan that holds a contractor's fringe contributions for workers' benefits. The contractor makes irrevocable contributions to a trustee or third party, and those contributions count toward the prevailing wage fringe rate. eBacon's Bona Fide Fringe Trust is built only for non-union, open-shop work and does not apply to union work (click through to eBacon's FringeMAX Trust Calculator below).

 

Biggest Myths About Prevailing Wage Fringe Benefits and Trusts

Most fringe benefit myths start with one word: trust. Contractors hear it and picture union halls, collective bargaining agreements, and money they can never touch.

  1. "A fringe trust means going union."
  2. "Trusts are a loophole auditors will flag."
  3. "Paying fringe in cash costs the same and is simpler."
  4. "Money in a trust is locked away from my workers."

 

The Reality Behind Fringe Trusts for Non-Union Contractors

Each of these myths breaks down under the actual rules. Federal law treats trust contributions as part of the prevailing wage, not as a union benefit.

  1. No union required. The Davis-Bacon Act lets non-union contractors meet fringe obligations through contributions to a bona fide plan, fund, or program, or by paying fringe as cash.
  2. Trusts are written into the law. The federal definition of wages includes irrevocable contributions to a trustee or third party. A properly run bona fide trust is a compliant method, not a workaround.
  3. Cash fringe costs more. Cash fringe is subject to FICA, FUTA, and state unemployment tax. It can also raise workers' comp and payroll-based insurance costs. Contributions to a bona fide plan typically avoid those taxes.
  4. Workers can access funds. Access depends on plan design. eBacon's Bona Fide Fringe Trust, a traditional 401(k) for non-union work, lets employees choose benefits like health coverage or a retirement plan, or take weekly distributions by direct deposit or pay card. Taxes are paid at withdrawal.

What Fringe Benefit Choices Look Like on a Public Works Job

On a real job, the fringe rate rarely lines up with the benefits an open-shop contractor already offers. Where the leftover goes decides what it costs.

For example, a wage determination sets fringe at $20 per hour. The contractor's health plan covers $6 per hour after annualization. That leaves $14 per hour.

  • Paid as cash: The $14 becomes taxable wages. The employer pays 7.65% in FICA on it, and the worker pays 7.65% too.
  • Paid into a bona fide trust: The $14 still counts toward the fringe rate, but it generally stays out of the payroll tax base.

On non-union work, eBacon's trust saves a typical $4 per hour per worker in payroll tax and workers' comp costs, though actual savings vary by contractor.

How to Fix Fringe Benefit Mistakes Before They Cost You

Fixing fringe starts with knowing what you already provide and what's left over. Then pick the cheapest compliant option for what's left.

  1. Confirm the fringe rate on each job's wage determination.
  2. List your current benefits and annualize them. Federal rules require spreading plan costs across all hours worked.
  3. Check that each plan is bona fide. Unfunded plans need Department of Labor approval before you take credit.
  4. Decide where the remainder goes, cash, a trust, or a mix.
  5. Report it correctly. List each plan's hourly credit on the certified payroll and mark it funded or unfunded.

eBacon calculates fringe credits for allowable employer benefits and carries them into the WH-347 and fringe benefit statements.

 

Putting Non-Union Fringe Benefits Into Practice

Start by pricing out one job. The eBacon Fringe Benefits product page explains how the bona fide trust, fringe credit tracking, and third-party administration work together.

How Can I See eBacon's Non-Union Fringe Trust in Action?

Start with the free eBacon FringeMAX Trust Calculator. Enter your field headcount, fringe rate, and burden rates, and it compares cash fringe against a bona fide trust, including savings on payroll tax, workers' comp, and general liability. It takes 5 to 10 minutes and delivers a PDF report. Then book a demo tour to see how the non-union, open-shop fringe trust solution would be set up for your company.

Frequently Asked Questions

Do I have to be union to use a fringe benefit trust?

No. Non-union and open-shop contractors can use a bona fide fringe trust without joining a union. eBacon's trust is built for open-shop work only and does not apply to union work.

Is paying prevailing wage fringe benefits in cash legal?

Yes. Contractors can pay the fringe rate as cash wages. It is compliant but usually more expensive, because cash fringe is taxed as wages.

Does fringe benefit annualization apply to trusts?

Usually, yes. Most plan contributions must be annualized across all hours worked. Defined contribution pension plans with immediate participation and vesting within the first 500 hours are an exception.

 

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