Public MEP work usually carries prevailing wage and certified payroll requirements, and a subcontractor that does not read the wage determination underprices the labor and the administrative burden.
What prevailing wage sets
Federally funded MEP work carries Davis Bacon prevailing wage, and state and local public work carries state prevailing wage, each with a wage determination by trade and a certified payroll reporting requirement. The wage determination sets the labor rate and fringe the sub must pay, and certified payroll adds weekly reporting.
Why the wage burden is easy to miss
Whether prevailing wage applies, which determination governs, and the certified payroll requirement sit in the solicitation and the funding source, not the title. A sub that misses it underprices both the wage and fringe and the payroll administration.
What the Federal Rules Require a Subcontractor to Price
The Davis Bacon Act applies to each federal contract over $2,000 for construction, alteration, or repair of public buildings or public works. The Related Acts extend prevailing wage to projects that federal agencies assist through grants, loans, loan guarantees, and insurance, so a federally assisted job can carry the requirement even when the owner is a city or a school district. The Department of Labor lists the wage rate for each worker classification in a wage determination, and the prevailing wage is the basic hourly rate plus the fringe rate. General wage determinations are published on SAM.gov by county and by one of four construction types: building, residential, highway, and heavy.
| Requirement | What the Department of Labor says | Effect on an MEP subcontractor |
|---|---|---|
| Weekly pay and reporting | Contractors pay covered workers weekly and submit weekly certified payroll records to the contracting agency. The Copeland Act added the weekly certified payroll in 1934. | Payroll administration recurs every week for the length of the job |
| Flow down | The prime contractor must flow the contract clauses and the wage determination into every subcontract. | The sub signs up to the wage determination even if it never saw the owner contract |
| Job site posting | The wage determination and the WH 1321 poster go on the job site where workers can see them. | A field task on every covered project |
| Overtime | On prime contracts over $100,000, hours over 40 in a workweek are paid at one and one half times the regular rate. | Overtime is priced at the full prevailing rate |
| Missing classification | If the wage determination lacks a needed classification, the contractor submits a conformance request through the contracting officer with proposed rates. | Timing risk if the trade is not listed |
The bottom line: on covered work the wage determination sets the labor rate, so the bid should be built from the determination for that county and construction type, plus weekly payroll administration. Illinois and other states run separate state prevailing wage laws with their own rates and reporting, so a state or local job needs its own check. Our agent reads the solicitation and funding source, flags whether federal or state prevailing wage applies, and pulls the determination number into the digest.
How an AI bid agent flags prevailing wage
An AI bid agent reads each MEP solicitation, flags whether Davis Bacon or state prevailing wage applies, and surfaces the wage determination and the certified payroll burden. The sub prices the actual labor cost.
You can see how the agent reads a solicitation in our AI bid agent demo for MEP subcontractors. It flags the prevailing wage determination and certified payroll burden so the labor cost is priced.