Davis-Bacon FAQ: Prevailing Wage Checklist for Subcontractors
Subcontractors bidding federally funded or assisted construction projects must comply with strict prevailing wage rules under the Davis-Bacon and Related Acts. Bidding without verifying the correct wage determination, ignoring published revisions, or failing to account for mandatory fringe benefits can compromise job profitability and lead to costly compliance disputes. Estimators, interior specialists, and trade contractors can use this checklist-driven guide to answer common prevailing wage questions and verify project wage requirements before bid submission.
Checklist Item: Identify Your Wage Determination Category
Every covered project operates under either a general wage determination or a project wage determination. Under 29 CFR Part 1 and Part 5, a wage determination establishes the prevailing schedule of basic hourly wages and fringe benefits for laborers and mechanics across designated construction types, including building, heavy, highway, or residential work.
According to the U.S. Department of Labor Wage and Hour Division DBRA FAQ, general determinations (also termed area determinations) apply across specific geographic boundaries for defined construction sectors. When an area determination does not fit, a project wage determination may be issued for an individual undertaking. Key differences to evaluate on your pre-bid checklist include:
- A project wage determination remains valid for 180 calendar days after issuance, expiring if not incorporated into a contract or granted an extension by the Wage and Hour Division.
- An unutilized project wage determination becomes completely void once its period of effectiveness lapses.
- The contracting public agency must formally apply for a project determination using Standard Form (SF) 308.
Checklist Item: Verify the Official Determination Source
Estimators should confirm where the wage schedule originated to prevent pricing bids against outdated documents. Beginning June 14, 2019, sam.gov became the official portal where contracting agencies access Davis-Bacon Act general wage determinations. General wage determinations contain no expiration dates and take effect upon publication on sam.gov, notification in the Federal Register, or written agency receipt, whichever occurs first.
Subcontractors must not independently pull arbitrary schedules from the web without agency confirmation. General wage determinations must be incorporated by the contracting agency directly into the solicitation, bidding plans, and prime contract. Specialty trade bidders should obtain the governing schedule directly from the prime contractor or contracting agency. Aligning these verified baseline rates with thorough labor burden calculations ensures your trade proposal reflects complete labor expenses.
Checklist Item: Track Timing Rules for Wage Determination Revisions
Wage schedules are updated periodically to adjust wage and fringe benefit rates, reflect new area wage surveys, or update annual numbering conventions. When a revision is published while a solicitation is active, its applicability depends on established timing milestones:
- Under sealed bidding rules, revisions published at least 10 calendar days ahead of bid opening apply directly to the solicitation and resulting award.
- When a revision appears fewer than 10 calendar days prior to bid opening, it remains effective unless the contracting agency determines that notifying bidders is impractical due to insufficient time and places a written report of that finding into the contract file.
- For construction assisted by the National Housing Act, revisions apply if issued before work begins or before initial mortgage endorsement, whichever event takes place first.
- On projects receiving housing assistance under Section 8 of the U.S. Housing Act of 1937, updated determinations apply if issued before construction starts or prior to signing the housing assistance payments agreement.
Once construction begins, the wage determination incorporated into the contract award generally governs minimum compensation for the entire contract term, subject to narrow exceptions such as out-of-scope changes. Understanding these schedule triggers is critical when reviewing prevailing wage bidding requirements.
Checklist Item: Know When a Project Wage Determination Must Be Requested
If a project lacks a published general wage determination for the designated county and construction type, a project-specific determination is required. Guidance from the DOL DBRA FAQ page outlines three specific conditions under which a contracting agency may submit a request:
- The project scope spans multiple counties and utilizes tradespeople who cross county borders during performance.
- No general determination exists covering the designated jurisdiction and construction category for the upcoming project.
- Most or all site labor requires a trade classification absent from the standard area schedule, prior to contract award.
To obtain this decision, the funding or assisting agency transmits Form SF-308 via email to DBA308project@dol.gov or mails it to the U.S. Department of Labor, Wage and Hour Division, Branch of Construction Wage Determinations, 200 Constitution Ave NW, Room S-3014, Washington, DC 20210. Submissions must detail the construction category, project location (city, state, and zip code), and required trade classifications. Because agency processing takes at least 30 days, contractors should flag missing schedules well before bid day.
Checklist Item: Treat Base Pay and Fringe Benefits as Absolute Minimums
A prevailing wage schedule does not indicate average wages; it mandates a legal compensation floor. Under 29 CFR Part 1 and Part 5, the prevailing wage rateāwhich includes both the basic hourly rate and any fringe benefit rate set forth in the determinationāis the minimum rate contractors and subcontractors may pay workers in that job classification on the project.
Trade subcontractors cannot adjust wage floors downward or substitute unapproved pay classifications. When an agency schedule contains multiple wage tables covering different counties or distinct construction types on a single site, estimators must confirm classification boundaries with the prime contractor and contracting officer prior to submitting proposals.
Sources
Published October 29, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.