Certified Payroll & Prevailing Wage: A Contractor's Guide

Why Public Projects Have Extra Payroll Rules

Win a government or publicly funded construction project and your payroll suddenly comes with strings: prevailing wage requirements and certified payroll reporting. Get them wrong and you risk withheld payments, penalties, or debarment from future work. Here's the plain-language version.

What Is Prevailing Wage?

Prevailing wage is the minimum hourly rate — base pay plus fringe benefits — you must pay workers on covered public projects, set by job classification and locality. Federally, this comes from the Davis-Bacon Act; many states have their own "little Davis-Bacon" laws with their own rates. A laborer, an electrician, and an equipment operator each have their own required rate, and paying below it is a violation.

What Is Certified Payroll?

Certified payroll is the weekly report proving you paid those wages. On federal jobs it's filed on Form WH-347, listing each worker, their classification, hours, pay rate, fringe benefits, and deductions — signed under a statement of compliance. It's due weekly for the life of the project, and "we'll catch up later" isn't an option.

Where Contractors Get Tripped Up

• Misclassifying workers — putting someone in a lower-paid classification than the work they actually did.
• Fringe benefits — they count toward prevailing wage, but only if handled correctly; cash vs. bona fide benefit plans matters.
• Overtime on prevailing-wage jobs, which has its own calculation.
• Multiple classifications — a worker who does two trades in a week needs hours split by classification.
• Late or missing reports — a single paperwork miss can hold up an entire project's payment.

How Bookkeeping and Payroll Tie Together

Certified payroll isn't a standalone form — it has to match your actual payroll, your job-cost records, and the hours tracked against each project. When your books already capture labor by job and by classification, the weekly report is an export, not a reconstruction. When they don't, every week is a scramble.

The Bottom Line

If you take public-works projects, prevailing wage and certified payroll are non-negotiable — and the penalties for getting them wrong are steep. Payroll and bookkeeping built to track labor by job and classification turn compliance from a weekly headache into routine. Requirements vary by jurisdiction and project, so confirm the specifics for each contract.