What Is the Davis-Bacon Act? Coverage, Wages, and Penalties

The Davis-Bacon Act is a 1931 federal law that requires contractors and subcontractors on federal construction projects worth more than $2,000 to pay their workers at least the locally prevailing wage and fringe benefits for the trade they perform. Its purpose was, and remains, to stop contractors from importing cheaper labor to undercut workers in the area where a project is built. The core provisions sit at 40 U.S.C. §§ 3141–3148, and the Department of Labor’s Wage and Hour Division enforces them through weekly payroll audits, back wage recovery, and the possibility of debarment from federal contracting.¹

Which Projects Are Covered

The Act applies to every contract over $2,000 to which the federal government or the District of Columbia is a party for the construction, alteration, or repair of public buildings or public works.¹ Painting and decorating count as alteration and repair. Public works is a broad category that reaches bridges, dams, highways, federal courthouses, wastewater treatment plants, and similar infrastructure.

Coverage does not stop at direct federal contracts. Dozens of “Related Acts” extend the same prevailing wage requirements to construction projects that receive federal funding through grants, loans, or loan guarantees, including work funded under the Federal-Aid Highway Acts, the Housing and Community Development Act, and the Federal Water Pollution Control Act.² If federal money is in the project, prevailing wage rules almost certainly apply.

Which Workers Are Covered

The Act protects “laborers and mechanics” — anyone whose duties are manual or physical in nature, including workers who use tools or perform the work of a trade.³ What matters is the actual work being performed, not the job title. A worker labeled “general assistant” who spends the day operating heavy equipment is a mechanic under the Act.

People in genuine executive, administrative, or professional roles are excluded. Architects, engineers, project managers, timekeepers, and office staff do not fall under the mechanic or laborer categories regardless of how often they visit the job site.³ Misclassifying a covered worker as administrative to avoid paying prevailing wages is one of the most common violations the Wage and Hour Division finds.

Apprentices

Apprentices registered in programs approved by the Department of Labor’s Office of Apprenticeship or a recognized state apprenticeship agency may be paid less than the full journeyworker rate listed in the wage determination, but only at the rate specified in their apprenticeship agreement.³ The number of apprentices allowed on the job is capped by the apprentice-to-journeyworker ratio set in the registered program, and the ratio is checked daily. Any apprentice working beyond the permitted ratio must be paid the full prevailing wage for the classification of work they actually perform.⁴

How the Prevailing Wage Is Set

The Department of Labor surveys wages paid on similar construction projects in the county where the work will take place and publishes the results as “wage determinations.” Each determination lists specific trade classifications — electricians, ironworkers, plumbers, and the rest — with a basic hourly rate and a fringe benefit rate for each.⁵ Rates can vary considerably between neighboring counties.

When more than half the workers in a given classification earn the same wage, that wage is the prevailing rate. When no single rate commands a majority, the Department applies the 30-percent rule: the wage paid to the largest group is prevailing so long as that group represents at least 30 percent of the classification. If even 30 percent cannot be reached, the Department falls back to a weighted average.⁶ Non-union rates can also be adjusted between full surveys using the Bureau of Labor Statistics Employment Cost Index, though no more frequently than once every three years.⁷

The Fringe Benefit Piece

A Davis-Bacon prevailing wage has two components: the basic hourly rate and fringe benefits. Fringe benefits include employer contributions for health insurance, pensions, life insurance, disability coverage, vacation pay, and apprenticeship training programs.⁸ A contractor can satisfy the fringe requirement by making irrevocable contributions to a bona fide benefit plan, by paying the fringe amount as additional cash wages, or by combining the two.

The wage determination breaks this out plainly. A determination might list an electrician at $32.80 per hour with $21.68 in fringes; the contractor owes both amounts for every hour that electrician works on the project.⁵ Shortchanging the fringe side is as much a violation as cutting the hourly rate.

Overtime

Most Davis-Bacon projects also fall under the Contract Work Hours and Safety Standards Act, which requires overtime pay of at least one and one-half times the basic hourly rate for all hours worked beyond 40 in a workweek.⁹ The multiplier applies to the base rate in the wage determination, not the combined rate with fringes. Weekend or holiday work does not by itself trigger the overtime premium; only hours over 40 in the week do.

Contractors who violate the overtime requirement owe both the unpaid wages and liquidated damages of $33 per worker for each calendar day an employee worked more than 40 hours without proper overtime pay, paid to the federal government on top of the back wages owed to the worker.¹⁰

Weekly Pay and Certified Payroll

The Copeland Anti-Kickback Act works alongside Davis-Bacon and imposes two duties on contractors: pay covered workers weekly, and submit a certified payroll report to the contracting agency each week.² Copeland also prohibits contractors from pressuring or inducing workers to kick back any portion of their wages, and only payroll deductions specifically authorized by regulation are allowed.¹¹

The Department provides Form WH-347 as a convenience for weekly certified payrolls; contractors may use another format if it captures the same information.¹² Each report must include every worker’s name and an individual identifying number (such as the last four digits of a Social Security number; full Social Security numbers must not be included), plus classification, hourly rate, daily and weekly hours, gross wages, deductions, and net pay, with straight time separated from overtime.

A signed statement of compliance accompanies each payroll certifying that workers were paid the full wages earned, that no unauthorized deductions were taken, and that each worker received at least the applicable prevailing wage and fringe benefits. Because 18 U.S.C. § 1001 applies to these statements, knowingly submitting false information is a federal crime carrying up to five years in prison.¹³ All payroll records must be preserved for at least three years after all work on the prime contract is completed.¹⁴ Contractors must also post the applicable wage determination and the Department’s “Employee Rights” poster in a prominent, easily accessible spot on site.¹

Prime Contractors Are Responsible for Their Subs

The prime contractor on a Davis-Bacon project is ultimately responsible for every subcontractor’s compliance, no matter how many tiers deep the subcontracting goes.¹⁵ If a lower-tier sub pays its workers below the prevailing wage, the prime is on the hook for the back wages. Prime contractors must include the Davis-Bacon labor standards clauses and the applicable wage determination in every subcontract, and each subcontractor must pass those clauses down to any further subcontracts. Failing to flow the clauses down does not release the prime; it concentrates the liability.

Penalties and Debarment

When Wage and Hour investigators find underpayments through site visits, worker interviews, and payroll audits, the contractor must pay back wages to every affected worker. If a contractor will not cooperate, the contracting agency can withhold enough from accrued contract payments to cover the full amount owed, including interest, without the contractor’s permission — that authority is built into the standard contract clauses.¹⁶

The most severe civil consequence is debarment. A contractor found to have disregarded its obligations to workers can be barred from all federal and federally assisted contracts for three years, and the bar extends to the company’s responsible officers and any other firm in which those officers hold an interest.¹⁶ Falsifying certified payroll records can also be prosecuted criminally under 18 U.S.C. § 1001, with up to five years in prison.¹³

How Workers Report Violations

Any worker who believes they are being paid less than the prevailing wage on a federally funded construction project can file a complaint with the Wage and Hour Division by calling 1-866-487-9243 or through the Division’s website. Complaints can be filed regardless of citizenship, and workers do not need to provide their immigration status.

Retaliation is separately prohibited. Firing, demoting, reducing hours, blacklisting, or otherwise punishing a worker for reporting a violation or cooperating with an investigation is itself a violation and can independently trigger debarment.² If retaliation is found, the Wage and Hour Division can order reinstatement, back pay with interest, compensatory damages, and expungement of any disciplinary records tied to the retaliation.¹⁷

1
Office of the Law Revision Counsel. 40 U.S. Code 3142 – Rate of Wages for Laborers and Mechanics
2
U.S. Department of Labor. Fact Sheet 66 – The Davis-Bacon and Related Acts
3
eCFR. 29 CFR 5.2 – Definitions
4
U.S. Department of Labor. Davis-Bacon Compliance Principles
5
U.S. Department of Labor. Davis-Bacon Wage Determinations
6
U.S. Department of Labor. Davis-Bacon and Related Acts Frequently Asked Questions
7
Federal Register. Updating the Davis-Bacon and Related Acts Regulations
8
Office of the Law Revision Counsel. 40 USC 3141 – Definitions
9
U.S. Department of Labor. Overtime Pay on Government Contracts
10
eCFR. 29 CFR 5.8 – Liquidated Damages Under the Contract Work Hours and Safety Standards Act
11
U.S. Department of Labor. Prohibition Against Kickbacks in Federally Funded Construction
12
U.S. Department of Labor. Instructions for Completing Davis-Bacon and Related Acts Weekly Certified Payroll Form WH-347
13
Office of the Law Revision Counsel. 18 U.S. Code 1001 – Statements or Entries Generally
14
eCFR. 29 CFR 5.5 – Contract Provisions and Related Matters
15
U.S. Department of Labor. Fact Sheet 66C – The Davis-Bacon and Related Acts Labor Standards Clauses and Subcontract Agreements
16
eCFR. 29 CFR Part 5 Subpart A – Davis-Bacon and Related Acts Provisions and Procedures
17
eCFR. 29 CFR 5.18 – Remedies for Retaliation