Payrollproof

Certified payroll requirements by state

Which law covers your public-works job, how often certified payroll is due, and where the wage rates are published. Every fact below links to the statute or agency page it was verified against.

The federal baseline (Davis-Bacon)

Certified payroll contents

Under 29 CFR 5.5(a)(3)(ii), contractors must submit certified payrolls weekly for each week in which covered work is performed. The payroll needs only an individually identifying number for each worker — for example, the last four digits of the worker's Social Security number — and each submission carries a signed Statement of Compliance. Optional Form WH-347 satisfies the requirement.

Source: 29 CFR 5.5 (Cornell Legal Information Institute) (verified 2026-08-24)

Where determinations are published

Davis-Bacon wage determinations are published by the U.S. Department of Labor on SAM.gov, searchable by WD number or by location and construction category.

Source: SAM.gov Wage Determinations (verified 2026-08-24)

State guides

Working a covered job now? Set up your job free — Payrollproof pins the published wage determination for your county and trade and prepares each week's report from your own payroll figures.