Compliance

What is wage determination in construction?

A wage determination is the official schedule of minimum hourly wages and fringe benefits, by worker classification and location, that contractors must pay on a prevailing wage project such as a Davis-Bacon job.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

A wage determination (WD) is the rate sheet for a prevailing wage job. On federal and federally funded construction, the U.S. Department of Labor issues it. It lists worker classifications (carpenter, laborer, electrician, operating engineer and so on) for a specific county or area and type of construction, each with a base hourly rate and a fringe benefit rate. The applicable WD is attached to the bid documents and becomes part of the contract. Every covered worker must be paid at least the listed rate for the work they perform.

States with their own prevailing wage laws publish their own determinations, with different formats and rules. The federal process is described here; see prevailing wage laws by state for state programs.

Where wage determinations come from

The Department of Labor says the Davis-Bacon Act covers federal or District of Columbia contracts in excess of $2,000 for construction, alteration, or repair of public buildings or public works, and points to SAM.gov as the single location where contracting officers, and the public, obtain Davis-Bacon wage determinations. Rates come from DOL wage surveys. Under 29 CFR 1.2, the prevailing rate for a classification is the wage paid to more than 50 percent of workers in it, or if none, the wage paid to the largest group if that group is at least 30 percent, or otherwise a weighted average.

Which wage determination applies and when it changes

29 CFR 1.6 sets the timing rules, and they matter at bid time:

  • General WDs on the DOL-approved website have no expiration date. They remain valid until revised, superseded, or canceled.
  • Project WDs issued for a specific project are effective for 180 calendar days from issuance, and are void if not incorporated in time.
  • Revisions before bid opening: on sealed bids, a revision issued at least 10 calendar days before bid opening is effective for the solicitation. A revision issued less than 10 days before is also effective unless the agency finds there is not reasonable time to notify bidders and documents that finding.
  • Late award: if a sealed-bid contract is not awarded within 90 days after bid opening, a revised general WD issued before award applies, unless an extension is approved.
  • Wrong or missing WD: the agency must incorporate the correct WD, generally retroactive to award or start of construction, and the contractor must be paid for any resulting wage increases.

How to read a wage determination on a real job

Say a concrete sub is bidding a federally funded water plant upgrade. The bid package includes a WD for that county and type of construction. The estimator finds the classifications for the work (cement mason, laborer, operating engineer for the pump truck), notes the base and fringe for each, and builds labor rates from them. The PM then confirms each worker is classified by the work actually done that day. A laborer who spends two days finishing concrete may need to be paid the cement mason rate for those hours, which is where dual classification rules come in.

If a needed classification is missing from the WD, contractors do not just pick a close one. There is a conformance process through the contracting agency to add it.

Common mistakes

  1. Using the wrong WD. A WD for another county or a different construction type is not a substitute.
  2. Missing a pre-bid revision. Check for modifications right up to bid opening.
  3. Paying base only. The fringe amount is owed too, as benefits, cash, or a combination. See fringe benefits.
  4. Not flowing it down. Every subcontract on the job needs the same WD and labor clauses.
  5. Misclassification. Paying by job title instead of work performed is a frequent audit finding.

Related terms

See certified payroll, WH-347, prevailing wage, and union scale. Smart Business Automator helps prepare certified payroll with classification and rate detail checked against the job's wage determination.

Frequently asked questions

Where do I find a Davis-Bacon wage determination?

The Department of Labor directs contracting officers and the public to SAM.gov for Davis-Bacon wage determinations. The applicable WD should also be included in the bid documents.

Does a wage determination expire?

General wage determinations have no expiration date and stay in effect until revised or canceled. Project wage determinations are effective for 180 calendar days from issuance under 29 CFR 1.6.

What if the wage determination changes after I bid?

On sealed bids, revisions issued less than 10 calendar days before bid opening may not apply if the agency finds there was not reasonable time to notify bidders. If award is delayed more than 90 days after bid opening, a later revision may apply. Ask the contracting officer.

What if a trade I need is not on the wage determination?

The contractor requests an additional classification and rate through the contracting agency. Do not substitute a different classification on your own.

Sources

  1. U.S. Department of Labor: Davis-Bacon and Related Acts
  2. Cornell LII: 29 CFR 1.6, Use and effectiveness of wage determinations
  3. Cornell LII: 29 CFR 1.2, Definitions
Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

Get a free assessment