How bidding works
Prevailing wage and Davis-Bacon for contractors
Prevailing wage is the requirement that workers on public construction be paid at least the locally determined rate for their trade, set by a government agency rather than by your payroll. It changes your labor cost, your bid, your administrative overhead and your exposure, and it is the single most common reason a contractor's first public job loses money.
Most of what is written about this covers the federal Davis-Bacon Act. But the great majority of prevailing wage exposure for ordinary contractors is state exposure. Roughly two-thirds of states have their own prevailing wage law, usually called a "little Davis-Bacon" act, and the state thresholds are frequently far lower than the federal one. California triggers at $1,000. Davis-Bacon triggers at $2,000. Ohio triggers at $250,000 for new construction. Where both apply, you pay the higher of the two rates, classification by classification.
This guide covers what triggers coverage, how to read a wage determination, how fringe benefits work, what certified payroll actually requires, and what non-compliance costs.
On this page
The short version
- The federal Davis-Bacon Act applies to federal and District of Columbia contracts "in excess of $2,000" for construction, alteration or repair of public buildings and works, 40 U.S.C. § 3142.
- State thresholds vary enormously: California requires prevailing wages on public works except projects of $1,000 or less (Labor Code § 1771); Ohio sets $250,000 for new construction and $75,000 for reconstruction, alteration or repair.
- Where a federal wage determination and a state rate both apply, you pay the higher rate for each classification.
- The rate has two parts: a basic hourly rate and a fringe benefit rate. You may satisfy the fringe portion with bona fide benefits or pay it in cash, but you must pay it.
- Classification is decided by the work performed, not by job title. Misclassifying a worker into a cheaper trade is the most common violation and it produces back-wage liability.
- Certified payrolls are due weekly, with a signed statement of compliance, and records must be preserved at least three years after the prime contract is completed (29 CFR 5.5(a)(3)).
What triggers coverage
Federal: Davis-Bacon and the Related Acts
The Davis-Bacon Act at 40 U.S.C. § 3142 applies to "every contract in excess of $2,000, to which the Federal Government or the District of Columbia is a party" for the "construction, alteration, or repair, including painting and decorating, of public buildings and public works." Contractors must pay no less than the wages the Secretary of Labor determines to be prevailing for the corresponding classes of laborers and mechanics on similar work in the locality.
The bigger exposure for most contractors is the Davis-Bacon Related Acts: dozens of statutes that extend prevailing wage requirements to construction assisted by federal funds. That is how a locally administered project ends up federally covered: HUD-funded housing authority work, federal highway aid on a county road, EPA state revolving fund water and sewer work, FTA-funded transit facilities, and a wide range of grant-funded construction. If federal money touches the project, ask whether Davis-Bacon rides along before you bid. See how to win public housing authority contracts.
State: little Davis-Bacon acts
Roughly two-thirds of states have their own law. The variation is the point:
| Jurisdiction | Threshold | Authority |
|---|---|---|
| Federal (Davis-Bacon) | Contracts in excess of $2,000 | 40 U.S.C. § 3142 |
| California | Public works projects over $1,000 | Labor Code § 1771 |
| Ohio, new construction | $250,000 | ORC § 4115.03 |
| Ohio, reconstruction, alteration, repair | $75,000 | ORC § 4115.03 |
| Ohio, road and bridge work | $78,258 new / $23,447 alteration, adjusted biennially | ORC § 4115.03 |
Several states, including Georgia, Florida, Virginia (with limited local exceptions), the Carolinas and a number of others, have no general state prevailing wage law at all, which means state and local public work in those states is unregulated on wages unless federal funds are involved. That single fact drives large differences in public bid pricing across state lines.
The rule where both apply: you pay the higher rate, classification by classification. Not the higher schedule overall: the higher rate for each individual trade classification on the job.
Reading a wage determination
The wage determination is an appendix to the solicitation, and it is a pricing document. Read it before you estimate, not after you win.
Federal determinations are published on SAM.gov and identified by a code such as a general determination number, county coverage and a modification number. State determinations come from the state labor department: in California, from the Department of Industrial Relations, with rates issued twice a year and often with predetermined increases scheduled into future years.
What to extract:
- Which determination applies. Building, residential, heavy or highway. The same trade can have materially different rates across these schedules, and a project can carry more than one.
- The county. Rates are geographic. A determination for the wrong county is a costly error.
- The classifications and their rates. Each shows a basic hourly rate and a separate fringe rate.
- Predetermined increases. Common in state determinations and in union-based rates. On a two-year project you are contractually bound to pay the scheduled increases, so build them into your price.
- The lock-in date. Federally, the determination in effect at bid opening generally governs for the life of a fixed-price contract. State rules vary. California generally ties the applicable rate to the date the project is advertised for bid.
- The modification number. An addendum can substitute a newer determination. See how to respond to an RFP on why addenda need an owner.
Contractors are also required to post the applicable wage determination at the site. 29 CFR 5.5(a)(1)(i) requires the wage determination and the Davis-Bacon poster (WH-1321) to be "posted at all times by the contractor and its subcontractors at the site of the work in a prominent and accessible place where it can be easily seen by the workers." Investigators check this first.
Classification: where the money and the violations are
Classification is determined by the work actually performed, not by the title on your payroll, not by what you have always called the role, and not by which classification is cheaper.
The rules that matter:
- Split-classification days. A worker who spends four hours as a laborer and four as a cement mason must be paid each classification's rate for the hours actually worked in it, with accurate time records to support it. Paying the lower rate for the whole day is a violation.
- Working foremen. A foreman who performs manual work is covered for those hours. Salaried supervisory staff who perform no manual labor generally are not.
- Apprentices. May be paid the reduced apprentice rate only if enrolled in a program registered with the Department of Labor's Office of Apprenticeship or a recognized state apprenticeship agency, and only within the program's permitted ratio of apprentices to journeyworkers. An unregistered "apprentice", or one over ratio, must be paid the full journeyworker rate.
- Owner-operators and truck drivers. Coverage of material delivery is narrow and fact-specific. Drivers spending significant time on site, or hauling between the site and a dedicated facility, are frequently covered.
- Conformance. If a classification you need is not on the determination, do not invent a rate. There is a formal conformance process to add a classification and rate.
- Overtime. Overtime premium is computed on the basic hourly rate, not on the basic rate plus fringes. Several states also require daily overtime. California requires it after 8 hours in a day on public works.
Misclassification is the most common finding in enforcement actions, and it produces back-wage liability for every affected hour of every affected worker across the whole project.
Fringe benefits: the part contractors get wrong
A prevailing wage rate has two components. If the determination shows a basic rate of $38.40 and a fringe rate of $16.75, your obligation is $55.15 per hour. You may discharge the fringe portion in either of two ways.
Pay it in cash. Add the full fringe amount to the hourly cash wage. Simple, and it is what most non-union contractors do, but it increases payroll taxes, workers' compensation premium and any overtime base tied to cash wages, because it is all wages.
Provide bona fide benefits. Health insurance, a qualifying retirement plan, vacation, apprenticeship training. The credit is the hourly equivalent of the employer's contribution, annualized correctly. You divide the annual cost by total annual hours worked, including private commercial work, not only by public-job hours. Getting the annualization wrong is a common finding.
The economics of the choice are real. On a crew working 10,000 prevailing wage hours a year at a $16 fringe rate, that is $160,000 of obligation. Paying it in cash exposes the whole amount to payroll burden; providing it as bona fide benefits does not, which for many contractors saves 15 to 25 percent on that portion. Do not improvise this. Have a payroll provider or CPA experienced in prevailing wage set it up.
What does not count as a fringe credit: paying the worker's own share of anything, unfunded promises, the employer's legally required payments such as FICA, unemployment insurance or workers' compensation, and any benefit that is not communicated in writing to employees.
Certified payroll and recordkeeping
Certified payroll is the compliance instrument, and it is weekly. Under 29 CFR 5.5(a)(3), contractors and subcontractors must submit payroll documentation weekly for each week in which Davis-Bacon covered work is performed, and each submission must be accompanied by a signed statement of compliance certifying that the payroll information is correct and complete, that each worker was paid the full weekly wages earned without unlawful deduction, and that each was paid not less than the applicable wage rate and fringe benefits for the classification of work performed. The prime contractor is responsible for ensuring its subcontractors submit theirs.
Federally the standard format is Form WH-347, though any format containing the required information is acceptable. Records (regular payrolls and other basic records) must be maintained during the work and preserved "for a period of at least 3 years after all the work on the prime contract is completed."
States layer their own systems on top. California requires electronic certified payroll records to be submitted to the Department of Industrial Relations, in addition to whatever the awarding body requires. Many agencies and their consultants use compliance platforms such as LCPtracker, eComply or eMars, and you will be given a login and expected to upload weekly.
Budget for the administrative load honestly. For a contractor running 15 to 30 field employees on covered work, certified payroll and related compliance realistically consumes 4 to 10 hours a week of an administrator's time, plus software costs. That is a real line in your overhead, and it is one of the costs to weigh in how much does it cost to bid on a government contract?.
Other obligations that travel with the wage determination: posting the determination and WH-1321 at the site; the Copeland Anti-Kickback Act rules limiting payroll deductions; and on covered contracts, the Contract Work Hours and Safety Standards Act overtime provisions.
What non-compliance costs
Enforcement is real and the penalties compound.
- Back wages. The difference between what you paid and what you owed, for every affected worker and every affected hour of the project. On a crew of twelve underpaid by $6 an hour for a nine-month job, that is well over $100,000 before anything else.
- Withheld contract funds. Federal contracts include a withholding provision allowing the agency to hold payments to cover computed back wages. Your cash flow stops while the dispute runs.
- Liquidated damages. Available under the Contract Work Hours and Safety Standards Act for overtime violations, computed per employee per violation day.
- Debarment. The most serious outcome. Davis-Bacon debarment for disregard of obligations runs three years and is government-wide. State debarment periods vary. California's penalty regime under the Labor Code includes both per-worker-per-day penalties and debarment.
- State penalties on top. California, for example, imposes statutory penalties for each worker for each day of underpayment, plus penalties for failure to submit certified payroll records, plus liability that can flow up to the prime for a subcontractor's violations.
Two operational points follow. First, you are exposed to your subcontractors' violations, so verify their certified payrolls rather than merely collecting them. Second, most findings come from routine audits and worker complaints, not from investigations of suspected fraud, which means clean records are usually the entire defense.
Pricing a prevailing wage job
The mistake is treating prevailing wage as a percentage uplift on your normal labor cost. It is not; it is a substitution of a different rate, and the delta varies by trade, county and schedule. Do it properly:
- Build the estimate from the determination, not from your payroll. Take the base plus fringe for each classification you will use, in the correct county and schedule.
- Apply your real burden to the correct base. Payroll taxes and workers' compensation apply to cash wages. If you pay fringes in cash, your burden applies to the whole amount; if you provide bona fide benefits, it does not.
- Add scheduled increases. If the determination carries predetermined increases in month 14, price months 14 onward at the higher rate.
- Price the compliance overhead. Certified payroll preparation, software, and the time to chase subcontractor submissions.
- Check the productivity assumption. Higher rates do not automatically mean higher unit costs (a properly staffed crew at determination rates is often more productive than a cheaper one), but do not carry your commercial production rates over unexamined.
- Confirm registration and eligibility. In California a contractor must be registered with the DIR under Labor Code § 1725.5 to bid on or perform public work. That costs $400 per fiscal year. Check equivalents in your state before bidding.
Prevailing wage work is good work: the rates are known, the funding is public, and the competitive field narrows to firms willing to do the administration. It is only a trap for contractors who price it like private work. If you want help identifying which covered projects in your area actually fit your crew and cost structure, book a call.
Common questions
What is the Davis-Bacon threshold?
The Davis-Bacon Act at 40 U.S.C. § 3142 applies to contracts in excess of $2,000 to which the federal government or the District of Columbia is a party, for the construction, alteration or repair of public buildings and public works. The Davis-Bacon Related Acts extend equivalent requirements to many federally assisted projects administered by state and local bodies.
Does prevailing wage apply to state and local projects?
It depends entirely on the state. Roughly two-thirds of states have their own prevailing wage law with its own threshold. California applies to public works projects over $1,000, Ohio to new construction over $250,000 and to reconstruction or repair over $75,000. Several states have no general prevailing wage law at all. Federally assisted projects can carry Davis-Bacon requirements regardless of state law.
Can I pay the fringe benefit portion in cash?
Yes. You may satisfy the fringe obligation with bona fide benefits, in cash, or in a combination, as long as the total of the cash wage plus the hourly value of benefits meets or exceeds the determination's combined rate. Paying it in cash is simpler but exposes the full amount to payroll taxes and workers' compensation premium, which is why many contractors set up qualifying benefit plans instead.
What is certified payroll and how often do I file it?
Certified payroll is a weekly submission listing each worker, their classification, hours by day, rate, gross pay, deductions and net pay, accompanied by a signed statement of compliance. Under 29 CFR 5.5(a)(3) it is due weekly for each week covered work is performed, the prime is responsible for its subcontractors' submissions, and records must be preserved at least three years after completion of the prime contract. WH-347 is the standard federal form; states often require an additional electronic submission.
What happens if I misclassify a worker?
You owe back wages for the difference, for every affected hour, and the agency can withhold contract funds to cover it. Depending on the jurisdiction you may also face liquidated damages, state statutory penalties assessed per worker per day, and in serious or wilful cases debarment, three years and government-wide under Davis-Bacon. Classification follows the work actually performed, so keep time records detailed enough to prove it.
If both federal and state prevailing wage rates apply, which do I pay?
The higher of the two, determined classification by classification rather than schedule by schedule. On a federally assisted local project it is entirely normal for some trades to be governed by the federal determination and others by the state rate. Build the estimate line by line rather than picking one schedule.
Do prevailing wage rules apply to service contracts as well as construction?
Prevailing wage laws such as Davis-Bacon and state little Davis-Bacon acts cover construction. Service work on federal contracts is instead covered by the McNamara-O'Hara Service Contract Act, which sets minimum wages and fringes for service employees, and a number of states have their own service-contract wage laws covering janitorial, security and building services. Check the solicitation. A janitorial or landscaping contract can carry a wage schedule of its own. See how to get school district janitorial contracts and how to get government landscaping contracts.
Sources
- 40 U.S.C. § 3142, Davis-Bacon Act wage requirements
- 29 CFR 5.5, Contract provisions and related matters (payroll records, posting)
- California Labor Code § 1771, prevailing wage on public works
- Ohio Revised Code § 4115.03, prevailing wage thresholds
- California DIR, Public Works Contractor Registration