The Davis-Bacon Act has governed wages on federal construction since 1931. It is the statute every Mid-Atlantic state prevailing-wage law is compared against — and the federal floor that applies even where state law does not. If your project uses federal money, a federal permit with an economic-assistance nexus, or federal land, Davis-Bacon is part of the project's labor obligations. Getting wage determinations, classifications, and certified payrolls right is as important to schedule as any inspection on site.
Davis-Bacon's core text is 40 U.S.C. § 3141 et seq. Its implementing regulations are at 29 CFR Parts 1, 3, 5, 6, and 7, administered by the U.S. Department of Labor Wage and Hour Division (DOL WHD). The 2023 Final Rule — "Updating the Davis-Bacon and Related Acts Regulations" (88 Fed. Reg. 57526, August 23, 2023, effective October 23, 2023) — is the most substantial rewrite since 1982 and is the version now in force.
Davis-Bacon applies to:
The Davis-Bacon Related Acts — more than 70 statutes — extend the prevailing-wage requirement to federally assisted construction under federal grants, loans, loan guarantees, and insurance. Common Related Acts in the Mid-Atlantic:
Each Related Act sets its own trigger and definitional scope; the dollar thresholds and the applicability rules vary. The starting question on any project is: which specific federal authority is the money or permit coming under, and what does that authority say about Davis-Bacon?
Once triggered, Davis-Bacon imposes four core obligations:
Davis-Bacon covers laborers and mechanics. It does not cover foremen who do not engage in physical labor more than 20% of the time, architects, engineers, professionals, or clerical workers.
A wage determination (WD) is the DOL document listing prevailing wages and fringes by classification for a defined geography and type of construction. WDs are organized by:
WDs are posted on sam.gov (the current host, replacing wdol.gov) and must be incorporated into each covered contract.
The 2023 rule restructured several long-contested elements of Davis-Bacon practice:
Several elements of the 2023 rule have been litigated; some pieces have been enjoined or stayed in narrow contexts. Confirm the current status with DOL guidance at the time of contract.
Every week worked on the covered contract, each contractor and subcontractor must submit:
Submission is typically to the contracting officer, who forwards to the funding federal agency and maintains the record. In most federally-assisted programs (HUD, DOT), state or local administering agencies are the recipients. Certified payrolls must be retained for three years after contract completion.
DOL WHD, federal agency project officers, and state administering agencies all audit certified payrolls. Worker complaints, classification disputes, and random audits are the three common triggers. Findings produce:
When both Davis-Bacon and a state prevailing-wage law apply to the same project — a common Mid-Atlantic case — contractors must pay the higher rate for each worker classification. In most Mid-Atlantic states, Davis-Bacon rates are equal to or above state rates for most trades, but there are exceptions where state rates are higher for specific classifications (particularly in dense urban jurisdictions).
The operational consequence: contractors do a wage-by-wage comparison on every classification before running payroll, not a project-wide comparison. The higher rate governs for each row.
Where only one applies:
Our state-specific essays walk each of these in detail.
The Inflation Reduction Act (IRA) conditioned enhanced clean-energy tax credits (Production Tax Credit, Investment Tax Credit, 179D, 45L, others) on payment of Davis-Bacon-equivalent prevailing wages and use of DOL-registered apprentices for a specified percentage of labor hours. These are not Davis-Bacon per se — they are tax-credit prerequisites enforced by the IRS in coordination with Treasury — but they track Davis-Bacon wage determinations and use the WH-347 payroll structure.
The Infrastructure Investment and Jobs Act (IIJA / Bipartisan Infrastructure Law) extended Davis-Bacon coverage to several new funding streams — broadband, clean-water, brownfield, and energy projects — that had historically been partially outside Davis-Bacon. The result is a meaningful expansion of Davis-Bacon footprint in the Mid-Atlantic.
Three practical rules:
A frequent misconception: "prevailing wage" means "union wage." Under the 2023 rule, a union rate can become the prevailing rate if it is paid to a majority of workers in the classification in the locality — but where no majority exists, DOL uses a weighted average that often falls below the union rate. The determination is data-driven, not policy-driven, even under the 2023 reforms.
Primary sources for this essay: Davis-Bacon Act (40 U.S.C. §§ 3141–3148); 29 CFR Parts 1, 3, 5, 6, and 7; DOL 2023 Final Rule (88 Fed. Reg. 57526, August 23, 2023); WH-347 Payroll and WH-348 Statement of Compliance; Contract Work Hours and Safety Standards Act (40 U.S.C. §§ 3701–3708); IRA prevailing wage and apprenticeship requirements (IRC § 45 and related); IIJA labor provisions. sam.gov hosts current wage determinations.