The 12 things every federal prime must have organized and accessible before a DOL Davis-Bacon audit.
Why federal primes need a Davis-Bacon audit prep checklist
Davis-Bacon audits used to feel rare. They aren’t anymore. The DOL announced in 2022 it was hiring 100 additional Wage and Hour investigators specifically because of the IIJA infrastructure surge, and audit volume has been climbing every quarter since. AGC’s compliance briefings put it bluntly: if you’re a federal prime, “if” became “when” two years ago.
When the Wage and Hour Division (or the contracting agency’s labor compliance officer) opens a Davis-Bacon investigation on one of your projects, here’s what actually happens. They sample your contracts above $2,000. For each sampled contract, they then examine 100% of the weekly certified payrolls associated with it.
Not a spot check. Every WH-347 from kickoff to closeout. They cross-reference each one against the wage decision attached to the contract, your timecards, your fringe-benefit plan documents, your apprentice registrations, and the worker interviews they conducted on site (SF-1445s).
Worker misclassification triggers the most audit findings. Missing or late certified payrolls trigger the second most. Apprentice ratio violations, running two unregistered apprentices off one journeyman, or pulling apprentice rates without DOL-approved program documentation, trigger the third most. None of those errors are easy to fix mid-audit. They get fixed by having clean, indexed records before the audit begins.
The 2023 Davis-Bacon rule update made this worse for primes specifically. Under FAR 22.406, the prime is now strictly liable for any sub-tier violations on the project. Even ones the prime had no knowledge of. If your tier-2 sub paid the wrong fringe rate four months ago, the back-wage liability flows to you. The audit doesn’t just check your records; it checks every sub’s records you collected, reviewed, and retained.
This checklist is built from years of running federal projects. It’s not a legal-blog summary or an AI hallucination. It’s the audit prep system that kept a large federal GC out of trouble through multiple DOL investigations. Every item on it is something an auditor will ask for, in the order they typically ask for it.
Who this checklist is for
- Federal general contractors preparing for a scheduled DOL Wage and Hour audit
- Federal general contractors running a periodic internal audit (best practice: quarterly)
- 8(a) federal subs acting as primes on set-aside contracts
- Compliance officers standing up a project’s audit binder before kickoff
- Project administrators rebuilding a binder after a turnover or staff change
If you’re the sub being asked for records by your prime, you want our WH-347 line-by-line annotated example instead. That’s the form-filling companion. This page is for the prime managing the audit response.
The 12-point Davis-Bacon audit prep checklist
The checklist covers 12 things every prime must have organized and accessible before a DOL or contracting-agency Davis-Bacon audit:
- Pull all WH-347s for the audit window. Auditors don’t ask for “recent”. They ask for the full window of the sampled contract. Pull every weekly certified payroll from contract kickoff through current week, including no-work weeks, for the prime and every active sub. Missing weeks are an immediate finding.
- Cross-check the wage decision number on each report. Every WH-347 should reference the wage decision attached to the contract, not the sub’s general WD, not last year’s WD. If a wage decision was modified mid-project, both versions should be on file with the effective dates documented.
- Verify the posted wage decision was at the jobsite during work. DOL specifically asks for proof the wage decision was conspicuously posted on site for workers to see. A photo of the posted notice, dated, in your records satisfies this. Most contractors miss this until the audit.
- Confirm apprentice registration with DOL or state agency. Every apprentice on the WH-347 must be individually registered in a DOL- or state-approved program. The certificate of registration goes in the binder. Unregistered “apprentices” must be paid the full journeyman rate. Auditors will spot this immediately.
- Compile fringe benefit plan documents and contributions. If fringes were paid as cash (column 9 of WH-347), the WH-347 face is sufficient. If contributed to bona fide plans, you need the plan documents, contribution records, and proof the dollar value met or exceeded the wage-decision fringe amount. Plan-fringe is where most fringe-violation findings come from.
- Reconcile timecards against certified payroll hours. Auditors compare daily site sign-in logs, foreman daily reports, and paper or electronic timecards against the hours reported on the WH-347. Mismatches between hours-on-site and hours-on-payroll are a common DOL trigger for back-wage demands.
- Pull Statements of Compliance for each pay period. Page 2 of every WH-347 must be signed by an owner, officer, or supervisor with payroll authority. Boxes 1, 2, 3, and 6 must be checked. Stamped signatures and missing signatures are invalid forms, and an auditor will count each one as a separate violation.
- Document any restitution paid for prior violations. If a sub paid back wages on a previous audit or self-disclosed a prior violation, those records belong in the binder. Auditors look for patterns. Undisclosed restitution from a prior project signals you may be hiding current violations.
- Verify worker interviews logged on SF-1445 forms. Auditors typically interview workers on site during construction. Those interviews are recorded on SF-1445 forms. The contracting officer may share copies with you in advance of the audit; if so, retain them and reconcile against your payroll classifications and rates.
- Confirm lower-tier sub payroll collected and reviewed. Under FAR 22.406, the prime is liable for sub-tier compliance regardless of contractual tier. Your binder must include every tier-1 sub’s WH-347s plus their tier-2 and tier-3 sub WH-347s as you received them. A note documenting your review (date and reviewer) on each sub WH-347 demonstrates oversight.
- Organize records by project, sub, and week. Auditors don’t reformat your records. If you hand them a shoebox, they’ll spend longer in your office and find more issues. Project → sub → week → form. Indexed. Searchable. The first impression of organization shapes the audit’s tone.
- Prepare audit response binder and point of contact. Designate one person as the audit liaison. Compile a master binder (or shared folder) with table of contents, all 11 items above, and a chronological project narrative. The DOL investigator will request specific items; the binder cuts response time from days to hours.
How to run the checklist quarterly (and when DOL letter arrives)
Run this checklist quarterly as an internal audit, even when no DOL inquiry is open. For each project:
- Print the checklist or open the working Excel.
- Walk down the 12 items in order, marking each
- Pass, Gap, or Action.
- Anything Gap → assign an owner and deadline. Don’t close the checklist until every item is Pass.
- Anything Action → document the corrective work in the binder; auditors view active remediation as good faith.
- Save the completed checklist as part of the project’s permanent Davis-Bacon binder. When the DOL letter arrives, you’re already 80% ready.
Quarterly cadence matters. The DOL gives you 14 days to respond to most document requests; 14 days isn’t enough to build the binder from scratch on an active project.
Stop fearing the DOL letter
The 12 items on this checklist are easy when records are clean and indexed in real time. They’re a nightmare when you have to reconstruct them after a DOL letter arrives with a 14-day response window. Contracts Connected’s Certified Payroll Analyzer keeps every WH-347 your subs submit indexed, validated against the wage decision, and audit-ready from week one, so when the letter shows up, the binder is already built. Between us, that’s the part of the job nobody wanted anyway.
Frequently asked questions about Davis-Bacon audits
Who conducts a Davis-Bacon audit?
DOL’s Wage and Hour Division is the primary federal investigator, but the contracting agency’s labor compliance officer can also audit you, and on federally-assisted state projects (Federal Highway, HUD, etc.) the state DOL may run the inquiry. All three follow similar procedures. Treat any of them as a full audit.
How long must Davis-Bacon records be kept?
Three years after project completion for all certified payrolls, wage determinations, conformance requests, fringe-benefit documentation, apprenticeship registrations, and any related correspondence. Federal contracting agencies sometimes contractually require longer retention. Check your specific contract clauses. When in doubt, keep records longer.
What triggers a Davis-Bacon audit?
Worker complaints (including anonymous tips to DOL), random selection during the contracting agency’s compliance program, agency referrals when a contractor is flagged on a different project, or a pattern of late, missing, or inconsistent WH-347 submissions. Subcontractors with prior violations on other primes’ projects can also draw audits onto a current prime through cross-referencing.
What documents does a Davis-Bacon auditor typically request?
The standard request set: all WH-347s for the audit window, the contract’s wage decision and any modifications, project timecards, fringe-benefit plan documents and contribution records, apprentice registration certificates, SF-1445 worker-interview forms (if conducted), and supporting pay records like W-2s or check registers. Some auditors also ask for daily reports and OSHA injury logs.
Can subcontractors be audited directly, or only the prime?
Both. Subs can be audited directly by DOL, but the prime is contractually liable for all sub-tier violations under FAR 22.406. In practice, that means a sub-direct audit usually expands to a prime audit, because back-wage liability flows up the chain. The prime is wise to participate in any sub audit even when not formally part of it.
What are typical Davis-Bacon penalties?
Back wages plus liquidated damages on the back wages, payment withholding from the contracting agency until violations are cured, and debarment from future federal contracting (up to 3 years for willful violations). On large-dollar projects, individual back-wage assessments can reach hundreds of thousands of dollars. Settled-by-agreement amounts are the norm for honest errors; debarment is reserved for repeat or willful violations.