Prevailing Wage: What Contractors Have to Pay
Prevailing wage sets a floor on federal construction contracts over $2,000. How wage determinations work, the fringe rate, and the compliance obligations.
A small contractor's first prevailing wage job is easy to win with a bid that assumed the listed hourly rate was the number. It is not the number, only the base rate, and the rest of the obligation sits in a separate column the estimate never picked up. I wrote this guide so you see the whole number before you bid, not after you win.
That separate column is the fringe benefit rate, a second hourly amount owed on top of the base. Missing it leaves every covered hour on a federal Davis-Bacon Act job short by the whole fringe amount. The mistake is also entirely avoidable, because both figures are printed on the same page of the same document.
This guide covers what prevailing wage is, who it reaches, how to read a wage determination, why the fringe rate is half the obligation, the classification rules that make timekeeping harder than usual, and why your subcontractor's mistake is your liability.
I build the people and records tooling for businesses without an HR department at FirstHR, and FirstHR is an onboarding and HR platform rather than a payroll provider. This is general information, not legal advice.
What Prevailing Wage Is
Prevailing wage is a minimum rate of pay on public works projects, set by the government for each classification of construction work in each geographic area. It is a floor rather than a suggestion, and it is set per classification rather than per employee.
The statutory basis is straightforward: the requirement attaches to contracts in excess of $2,000 for the construction, alteration, or repair of public buildings or public works (40 U.S.C. 3142). That threshold has not moved in a long time and is low enough to catch essentially any job worth bidding.
What makes it operationally different from ordinary payroll is not the rate itself. It is that the rate attaches to work performed rather than to a person, that it comes in two parts, and that it carries weekly payment, posting, and reporting obligations.
Who Is Covered
Prevailing wage covers more than direct federal construction contracts. It flows down to subcontractors at every tier and frequently reaches construction funded by federal grants or loans, which is what surprises contractors who have never thought of themselves as federal contractors.
| Situation | Covered? | Note |
|---|---|---|
| Direct federal construction contract over $2,000 | Yes | The core Davis-Bacon case |
| Federally assisted construction via grant or loan | Frequently | Through the body of related acts, which attach the wage rules to the funding |
| A subcontract on a covered project | Yes | Coverage flows down through every tier |
| Purely private construction, no federal money | No | Unless a state or local prevailing wage law applies |
| State or locally funded public works | Depends on state law | Many states have their own regime, with their own thresholds and rate schedules |
| Material suppliers who do not perform site work | Generally no | The obligation attaches to laborers and mechanics on the site |
The second row is the trap. A community facility funded by a federal housing or transportation program does not look like a federal contract to the contractor bidding it, and the wage requirements arrive through the funding rather than through the client. Ask what money is behind a public project before pricing it, every time.
Reading a Wage Determination
A wage determination is the document that tells you what to pay. It is organized by geography, by type of construction, and then by classification, and it has two rate columns rather than one.
Determinations are published through SAM, the federal System for Award Management, and the operative version for your job is the one incorporated into your contract (SAM wage determinations). Looking up today's rate and comparing it against what you are paying on a job awarded eighteen months ago produces a discrepancy that means nothing.
The types of construction matter more than they look. Building, residential, heavy, and highway carry different schedules, and picking the wrong one produces rates that are wrong across every classification on the job simultaneously.
How a prevailing wage rate is arrived at, and how to find yours
A prevailing wage rate comes out of a survey rather than a formula. Under 29 CFR 1.2 the Wage and Hour Division looks at what is actually paid for a classification on similar projects in the area, and the prevailing rate is the wage paid to a majority, meaning more than 50 percent, of those workers.
Two fallbacks follow when no majority exists. The rate becomes the wage paid to the greatest number of workers, provided that group is at least 30 percent of those employed in the classification. Where nothing reaches 30 percent, it becomes the weighted average of the wages paid in that classification.
Pulling the right determination for a job you are pricing needs three facts before you search: the state and county the work sits in, the type of construction, and whether federal money is behind the project. What comes back is a numbered determination with a revision date. Write both onto the estimate, because that is the version you will be held to once it goes into the contract.
The Fringe Rate Is Half the Obligation
Every determination lists a fringe benefit amount separately from the base hourly rate. It is not optional, it is not a benchmark, and it is not satisfied by whatever benefits you happen to provide.
You may satisfy the fringe rate three ways: with bona fide fringe benefits, with cash paid in addition to the base rate, or with a combination that reaches the listed amount per hour. The cash route is simplest and most expensive; the benefits route is cheaper and requires you to demonstrate the hourly value of what you provide, per employee, on covered hours.
Where you already provide health coverage or retirement contributions, converting those to an hourly equivalent is the calculation to get right, and it is worth doing before the bid rather than after the award.
Do that arithmetic once, per classification, on a sheet you keep with the contract. The fringe column sits right beside the base rate, deliberately, so the number that decides your margin cannot be skipped.
| A | B | C | D | E | F | G | H | |
|---|---|---|---|---|---|---|---|---|
| 1 | Classification as listed on the determination | Base hourly rate listed | Fringe rate listed | Total hourly obligation | Hourly value of benefits we provide | Cash per hour to close the fringe | Estimated covered hours | Estimated labor cost |
| 2 | =B2+C2 | =C2-E2 | =D2*G2 | |||||
| 3 | =B3+C3 | =C3-E3 | =D3*G3 | |||||
| 4 | =B4+C4 | =C4-E4 | =D4*G4 | |||||
| 5 | =B5+C5 | =C5-E5 | =D5*G5 | |||||
| 6 | =B6+C6 | =C6-E6 | =D6*G6 | |||||
| 7 | =B7+C7 | =C7-E7 | =D7*G7 | |||||
| 8 | =B8+C8 | =C8-E8 | =D8*G8 | |||||
| 9 | Total | =SUM(G2:G8) | =SUM(H2:H8) |
How to calculate prevailing wage for an hour of work
Take the two columns from the determination and add them. A base rate of $28.50 and a fringe rate of $14.20 make a $42.70 obligation for every covered hour, and the split between cash and benefits is yours to choose as long as the total lands there.
Then price what you already provide. A health plan costing $6,000 a year for somebody who works 2,000 hours is worth $3.00 an hour, and that hourly value is your credit against the fringe. Divide by every hour they work in the year, covered and private alike, because a benefit bought for the whole year cannot be credited only against public work (29 CFR 5.25).
Take the credit off the fringe and the remainder is cash. On these numbers, $14.20 less $3.00 leaves $11.20 an hour to pay on top of the base, so the rate on the check is $39.70 and the obligation is still met at $42.70.
Overtime runs on the base rate alone. Under 29 CFR 5.32 the fringe amount stays out of the premium, so an hour over 40 on covered work is paid at one and a half times $28.50, which is $42.75, with the $14.20 fringe still owed on that hour. That is $56.95 for the hour.
The overtime requirement itself comes from a separate statute. According to the Wage and Hour Division, the Contract Work Hours and Safety Standards Act reaches prime contracts exceeding $100,000 and requires one and a half times the regular rate for every hour over 40 in a workweek (Davis-Bacon and Related Acts). Below that figure, ordinary Fair Labor Standards Act overtime still applies.
Classification and Split Days
Rates attach to the classification of work performed, not to job titles. Somebody your business calls a general operative may be performing three listed classifications across a week, each with its own rate.
Where an employee performs more than one classification in a day, the choices are to record the time spent in each and pay each rate accordingly, or to pay the highest applicable rate for the whole day. The second is more expensive and vastly simpler, and for a small crew it is frequently the better trade once you price the timekeeping burden of the first.
What is not available is averaging. Paying a blended rate that works out roughly right across a week is a violation even where the total is favorable to the employee, because the obligation runs per hour per classification (29 CFR 5.5; Field Operations Handbook, chapter 15).
Apprentices and trainees can be paid less than the listed rate only where they are registered in a qualifying program and within permitted ratios. An unregistered helper paid an apprentice rate is simply an underpaid worker in the full classification.
The Compliance Obligations
Five obligations sit alongside the rate itself, and each of them differs from how a small contractor normally runs payroll.
The weekly pay requirement is the one that most often collides with an existing process. A business running biweekly for everybody has to run a separate weekly cycle for covered work, and discovering that after the first pay period means correcting rather than complying.
Certified payroll is its own subject with its own form and its own submission mechanics, and it deserves separate attention from anybody about to file their first one. Whether a given worker is in scope at all turns on how the regulations define a laborer or mechanic and the site of the work, not on your payroll categories (29 CFR 5.2).
Dwight SchruteSales3 people
Darryl PhilbinWarehouse1 person
Kelly KapoorCustomer Service1 personSubcontractor Liability
A prime contractor is responsible for compliance across the whole covered project, including work performed by subcontractors at any tier. That is not a contractual arrangement you negotiated; it is how the regime is built.
The practical consequence is that a subcontractor who misclassifies a crew or ignores the fringe rate creates a liability that lands on you, funded in the usual case by withholding from money otherwise payable under your contract. An indemnity clause gives you a claim against the subcontractor; it gives you nothing against the agency.
That makes reviewing subcontractor certified payrolls a way of protecting yourself rather than meddling in their business. Look at the classifications used, check that the fringe column is populated and reaches the determination, and confirm the pay dates are weekly. Three checks, on documents they are already producing.
Log the three checks each week, per subcontractor, so that a problem found in month four has a paper trail showing when you first looked and what you did about it.
What Getting It Wrong Costs
Getting it wrong usually means paying back wages, and at the far end a three-year debarment from federal contracts. The consequences escalate with the seriousness of the failure, and the first tier is expensive enough to be worth avoiding on its own.
| Failure | Typical consequence | Why it multiplies |
|---|---|---|
| Paying base rate without the fringe | Back wage restitution for the full fringe amount | Applies to every covered hour of every affected worker |
| Wrong classification | Restitution of the difference in rate | Compounds where the misclassification ran the whole job |
| Paying less often than weekly | A violation on its face | Visible directly on the certified payrolls you filed |
| Falsified certified payroll | Serious enforcement exposure | Signed under a statement of compliance |
| Repeated or aggravated violations | Debarment from federal contracts for three years | Existential for a business built on public work |
| A subcontractor's violation | Restitution withheld from your contract funds | Yours regardless of your subcontract terms |
The fifth row gets far less attention than it deserves. Under 29 CFR 5.12, a contractor found to have disregarded its obligations to workers or subcontractors is ineligible for federal contracts for three years.
Three years ends a contractor whose pipeline is public work. Debarment also arrives at the end of a process rather than out of nowhere, which means the earlier tiers in that table are the warnings you were given and did not act on.
State Prevailing Wage Laws
Federal Davis-Bacon is only one regime. Many states operate their own prevailing wage laws covering state and local public works, with entirely separate rate schedules. Most set contract thresholds well above the federal $2,000, though several apply their law to public works of any size.
According to the Wage and Hour Division state table (last revised January 1, 2023), those thresholds range from none at all in states such as New York and Washington, through $1,000 in California and $75,000 in Missouri, to $1,000,000 for new construction in Connecticut (state prevailing wage laws).
The same table names the states that have no prevailing wage law at all, but that list predates Michigan restoring its law for state projects, effective February 13, 2024 (Michigan Act 10 of 2023).
These state laws are not variations on the federal rules. They have their own classification systems, their own reporting forms, their own submission portals, and their own enforcement agencies, and a project with no federal money can be fully covered by one. A contractor working across both regimes runs two parallel processes rather than one with adjustments.
Where a project carries both federal and state requirements, the practical rule is that you satisfy the more demanding of the two per classification, which requires actually comparing them rather than assuming the federal number governs. Confirm the state position per project with the relevant state labor agency, and treat any national summary as a starting point rather than an answer.
Where Small Contractors Get This Wrong
The mistakes fall into six patterns, and the first one is the reason this article leads where it does.
Bidding on the base rate comes first. It understates labor by the entire fringe amount, and it is discovered after the contract is priced and won.
The second is using a current wage determination instead of the contract one. The governing document is the one incorporated into your agreement.
Classifying by internal job title is third. The listed classifications describe work, and an employee who moves between them moves between rates.
Keeping the existing biweekly cycle is fourth. Covered work has to be paid at least weekly, and the pay dates are on the face of everything you file.
The fifth is assuming that an indemnity clause covers subcontractor failures. It gives you a claim against them and no protection from the agency.
And treating apprentice rates as a discount is last. They apply to registered apprentices within permitted ratios, and using them for an unregistered helper produces an underpayment across every hour that person worked.
Nick Anisimov, FirstHR founder
Frequently Asked Questions
What is prevailing wage?
Prevailing wage is the minimum hourly pay owed to laborers and mechanics who work on covered public construction projects. The government sets a separate rate for every classification of work in every locality. At the federal level the source is the Davis-Bacon Act, which applies when a federal or District of Columbia contract worth more than $2,000 covers construction, alteration, or repair work on public buildings or public works. Each rate comes in two pieces, a base hourly wage paid in cash and a separate hourly amount for fringe benefits, and a contractor has to meet both of them.
What is the threshold for Davis-Bacon to apply?
The threshold is $2,000: Davis-Bacon applies to federal contracts worth more than that for construction, alteration, or repair work, painting and decorating included, on public buildings or public works. Because the bar sits so low, most jobs a small contractor would bother to bid clear it. Federal money spreads the rule further: a long list of related acts carries the same wage requirements into construction backed by federal grants, loans, loan guarantees, or insurance. That is how a project that does not look federal at first glance still ends up covered by prevailing wage.
What is a wage determination?
A wage determination is the official rate schedule for one geographic area and one type of construction. For each classification of worker, it lists the rates the Wage and Hour Division has found to be prevailing in that area. You look determinations up in the System for Award Management at SAM.gov. The one that binds you is the determination written into your contract, not whatever version SAM.gov shows today. That distinction trips up contractors who check a live lookup against the rates on the job they actually won.
Does prevailing wage include benefits?
Yes. Every wage determination lists two hourly figures, a basic rate and a fringe benefit rate, and a bid priced on the basic rate alone leaves the benefits half out. You can cover the fringe with bona fide benefits, with the same amount paid as extra cash wages, or with any mix of the two. Whatever the mix, it has to add up to the full listed fringe for every hour of covered work. A contractor who pays the basic rate and offers no benefits underpays every one of those hours by the entire fringe.
How often do you have to pay employees on a Davis-Bacon job?
At least weekly. Laborers and mechanics on a covered contract have to receive their pay no less often than once a week for that work, which frequently differs from the pay cycle a small contractor uses for everything else. Running a biweekly or semimonthly cycle on a covered job is a straightforward violation and an easy one for an investigator to identify, because the pay dates are visible on the face of the certified payrolls you have already submitted.
Is a prime contractor responsible for a subcontractor's violations?
Yes. Prime contractors are liable for their subcontractors' compliance failures on covered work, which means an underpayment several tiers down can become your problem, your withheld contract funds, and your restitution to pay. Contractual indemnity between you and the subcontractor is a matter between the two of you and does not change your exposure to the agency or to the affected workers. Reviewing subcontractor certified payrolls is therefore self-protection rather than an administrative courtesy.
What happens if you underpay prevailing wage?
You usually owe back wages: the affected workers are paid the difference they were shorted, often out of contract payments withheld from you. Serious or repeated failures can go further, to debarment. Under 29 CFR 5.12, a contractor that has disregarded its obligations to workers or subcontractors cannot receive federal contracts for three years, which can sink a business that lives on public work. The cost also compounds, because each rate applies per classification and per hour, so one classification or fringe error repeats on every covered hour of the job instead of hitting a single paycheck.
Do states have their own prevailing wage laws?
Many do. These laws cover state and local public works, and the contract size that triggers them varies widely. The Wage and Hour Division table of state laws puts most of those triggers well above the federal $2,000, and Connecticut, for example, exempts new construction under $1,000,000. Others reach much smaller jobs: the California law covers public works over $1,000, and New York and Washington apply theirs to public works of any contract size. Each of these laws is a separate regime, with its own rate schedules, classification systems, reporting forms, and enforcement agencies, and it can cover a job with no federal money in it at all. If you take both federal and state-funded work, plan on running two sets of rules, and check the state requirement on every project.
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