Compliance and payroll

How to calculate fringe benefit credits on prevailing wage jobs

Divide what you pay into each bona fide benefit plan for a worker by all the hours that worker works in the period the payment covers, public and private. That hourly figure is your credit; pay any gap between it and the required fringe in cash.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

A fringe benefit credit is the hourly amount you can count toward the fringe portion of the prevailing wage because you already pay it into bona fide benefit plans. To calculate it, take the cost of each plan for a worker over a period, such as a year of health premiums or retirement contributions, and divide by the total hours that worker worked in that period on all jobs, both covered and private. 29 CFR 5.25 calls this annualization. Add up the hourly credit for every plan, compare it to the fringe rate on the wage determination, and pay any shortfall as cash on the check.

The most common mistake is dividing a full year of benefit cost by the hours on public jobs only. That inflates the credit, shorts the worker, and DOL lists failing to annualize, or annualizing incorrectly, among the common fringe violations in Fact Sheet 66E.

How the fringe obligation works

The prevailing wage for each classification is a basic hourly rate plus a fringe amount. You can meet the total with cash, bona fide benefits, or any mix, and under Davis-Bacon, cash above the base rate can cover the fringe. DOL's example uses a $27.00 base and $14.00 fringe: $41.00 all in cash works, $27.00 plus $14.00 in benefits works, and $35.00 plus $6.00 in benefits works.

What can and cannot be credited, per DOL Fact Sheet 66E
Usually creditableNot creditable
Contributions to a bona fide health or medical planBenefits required by other law, such as workers' compensation under a state statute
Pension or retirement contributionsThe contractor's own administrative costs for running plans
Life, disability, and similar insuranceTravel, lodging, company vehicles or phones
Registered apprenticeship program costs, within limitsHolidays or other items the wage determination already requires
Unfunded plans such as paid leave, only with prior DOL approvalUnfunded plans without prior approval

Funded plans must receive irrevocable contributions to a trustee or third party at least quarterly. Unfunded plans, paid from company funds like many vacation and sick leave plans, need prior DOL approval before you take credit.

How to calculate fringe credits in 5 steps

  1. List each plan and its cost per worker. For each worker, total what the company pays into each plan for the period it covers, usually a plan year. Count only what the company pays; money withheld from the worker's own check is not a contractor contribution.
  2. Total each worker's hours on all work. Include private, commercial, and other non-covered hours, plus covered hours, for the same period. 29 CFR 5.25 requires dividing by total hours on both DBRA and non-DBRA work.
  3. Divide to get the hourly credit per plan. Plan cost divided by total hours. Repeat for each plan, then add them up.
  4. Compare to the wage determination fringe. If the credit is lower than the required fringe for the classification, pay the difference in cash.
  5. Report it. On the WH-347, list each plan and each worker's hourly credit in the page 2 table, multiply by hours for column 6B, and put cash in lieu in column 6C.

Worked example: health and retirement for one carpenter

Say the wage determination for Carpenter is $33.00 base plus $14.80 fringe (illustrative). The contractor pays $9,360 a year toward the carpenter's health insurance and contributes $3,120 a year to a 401(k). The carpenter works 2,080 hours in the plan year: 1,200 on federal jobs and 880 on private jobs.

Example annualized fringe credit
ItemCalculationHourly credit
Health plan$9,360 / 2,080 hours$4.50
401(k)$3,120 / 2,080 hours$1.50
Total credit$6.00
Required fringeFrom wage determination$14.80
Cash in lieu owed$14.80 minus $6.00$8.80 per hour

The wrong way divides only by the 1,200 covered hours: $9,360 / 1,200 = $7.80 for health, and $3,120 / 1,200 = $2.60 for the 401(k), a $10.40 credit. That shorts the carpenter $4.40 an hour on every covered hour. Over 1,200 hours that is $5,280 in back wages for one worker.

When annualization does not apply

29 CFR 5.25 lets contractors request an exception in writing from the Wage and Hour Administrator, granted only if the benefit is not continuous and does not compensate both covered and private work. Defined contribution pension plans meeting those conditions are excepted without a request if they provide immediate participation and essentially immediate vesting, which DOL describes as vesting within the first 500 hours worked. If your 401(k) qualifies, it does not have to be annualized, but keep the plan documents that show participation and vesting terms.

Overtime and fringe

Fringe is owed on all hours, including overtime. Fact Sheet 66E says cash paid in lieu of fringe does not require the extra half-time premium, and a fringe stated as a percentage is calculated on the base rate and not added to it for overtime.

Apprenticeship program contributions

Contributions to a registered apprenticeship program can be credited, with limits. Fact Sheet 66E says the program must be registered with the DOL Office of Apprenticeship or a recognized State Apprenticeship Agency, and the credit is limited to amounts reasonably related to the actual cost of training, such as instruction, books, and tools. Voluntary payments beyond that do not count. The annualization is also different: divide the total cost by the hours worked by all of the company's laborers and mechanics in that apprenticeship classification, on covered and non-covered jobs, and leave out hours in other classifications. Contributions a state requires by law, such as a state training fund, are not creditable.

Keep the paperwork that backs every credit: plan documents, premium invoices, proof of contribution dates, and the hours report you divided by. A credit you cannot document is a credit an investigator will disallow.

Mistakes to avoid

  • Annualizing over covered hours only.
  • Using one company-wide average when plan costs differ by worker. 29 CFR 5.25 says to compute the credit separately for each worker when contributions vary.
  • Taking credit for workers' compensation, company trucks, phones, or per diem.
  • Claiming paid vacation as a credit without prior DOL approval of the unfunded plan.
  • Counting the employee's own payroll deduction toward the plan as employer cost.
  • Not updating the credit when premiums change at renewal.

Related guides and tools

For the full payroll process, see how to do certified payroll step by step. For pricing, the fringe cash and benefits belong in your labor burden math. Definitions are in fringe benefits and prevailing wage.

Smart Business Automator keeps each worker's plan credits on file, applies them per classification on every covered job, and calculates the cash in lieu on certified payroll reports. See certified payroll automation.

Frequently asked questions

Can I pay all fringe benefits in cash?

Yes. Under Davis-Bacon, the fringe obligation can be met entirely in cash, entirely through bona fide plans, or by a mix. Cash in lieu of fringe does not require an extra half-time overtime premium, per DOL Fact Sheet 66E.

What is annualization?

It is the rule in 29 CFR 5.25 that spreads benefit plan costs over all hours a worker works in the period the cost covers, covered and private, to find the hourly credit. It keeps covered work from paying for benefits that also cover private work.

Can I take credit for paid time off?

Paid leave paid from company funds is an unfunded plan. DOL requires prior approval before you can take credit for unfunded plans, and the plan must meet other conditions, such as being communicated to employees in writing.

Do apprentices get the full fringe?

It depends on the apprenticeship program. DOL says if the registered program does not address fringe benefits, apprentices must receive the full fringe amount for the journeyworker classification.

Sources

  1. 29 CFR 5.25, Rate of contribution or cost for fringe benefits (Cornell LII copy)
  2. U.S. Department of Labor: Fact Sheet 66E, Compliance with Fringe Benefit Requirements
  3. U.S. Department of Labor: Instructions for Form WH-347
Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

Get a free assessment