Prevailing wage law is the most consequential federal pay regulation most HR professionals never think about. If your company has a construction or service contract with the federal government, or works on a federally-funded infrastructure project, prevailing wage rules likely set the minimum hourly rate and fringe benefit rate for every worker on the job. Davis-Bacon coverage was significantly expanded under the 2021 Infrastructure Investment and Jobs Act, which means more contractors are subject to prevailing wage rules in 2026 than at any time since the 1980s. The compliance work is detailed and the penalties for noncompliance are real.
Davis-Bacon: The Federal Construction Prevailing Wage Rule The Davis-Bacon Act of 1931 requires contractors and subcontractors on federal construction projects (and most federally-funded construction projects) to pay workers the prevailing local wage and fringe benefits for the trade. The threshold is a federal contract value of $2,000 or more.
The Department of Labor publishes wage determinations by county and trade. A drywall installer in Cook County, Illinois, has a different prevailing rate than a drywall installer in Maricopa County, Arizona. The rate must be paid for all hours worked on the covered project; it does not affect pay for work on other (non-covered) projects performed by the same employee.
The Service Contract Act and What It Covers The McNamara-O'Hara Service Contract Act (SCA) extends similar rules to federal service contracts: janitorial, security, food service, transportation, and similar contracts. The threshold is a federal service contract value of $2,500 or more.
SCA wage determinations are issued by occupation and locality, and they include both minimum hourly wages and required fringe benefit values. If the employer doesn't provide qualifying fringe benefits (health insurance, retirement, paid leave), the cash equivalent must be paid as additional wages. Tracking compliance requires careful attention to which hours are SCA-covered and which are not, especially for employees who split time between covered and non-covered work.
How Do State Prevailing Wage Laws Differ? About 27 states have their own prevailing wage laws (often called little Davis-Bacon laws) that apply to state-funded construction projects. The thresholds vary widely. California's prevailing wage applies to public works projects of $1,000 or more. New York's threshold is similar. Other states have higher thresholds or apply only to specific project categories. Multi-state contractors need to track each state's rules separately because federal Davis-Bacon does not preempt state prevailing wage law.
How Wage Determinations Are Set and Where to Find Them The Department of Labor's Wage and Hour Division sets federal Davis-Bacon and SCA wage determinations based on surveys of actual wages paid in the relevant geography for the relevant trade. Wage determinations are published at sam.gov/wage-determinations and updated periodically. The wage determination in effect when the contract is awarded generally applies for the duration of the contract.
For each covered project, the contractor must obtain the applicable wage determination, post it at the worksite, pay workers no less than the listed rates and fringe benefits, and submit weekly certified payrolls (Form WH-347 for Davis-Bacon) demonstrating compliance. Failure to file accurate certified payrolls is one of the most common DOL audit findings.
Running a Prevailing Wage Compliance Program Five operational elements distinguish contractors that handle prevailing wage well. First, an authoritative source for wage determinations, with a process for verifying the correct determination for each project before work starts. Second, payroll system configuration that handles per-project wage rates and fringe benefit tracking. Third, certified payroll workflow that produces accurate weekly reports without manual reconciliation. Fourth, manager training on the prohibition against treating fringe benefit dollars as employer overhead. Fifth, audit response readiness, with documentation organized in a way that supports DOL inquiries efficiently.
The Department of Labor's Wage and Hour Division publishes the full Davis-Bacon and SCA regulations and compliance materials at dol.gov/agencies/whd/government-contracts . Penalties for prevailing wage violations include back-pay liability, debarment from future federal contracts (for 3 years), and civil penalties. Most violations are not malicious; they're administrative errors caused by complex requirements and inconsistent application across project managers. Tying the compliance program to your broader payroll and compensation structure is the foundation that makes the prevailing wage program sustainable.
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