What Is Certified Payroll? Complete Guide for Construction Contractors
If your company works on federally- funded construction projects, certified payroll isn't optional. Every contractor and subcontractor on a covered project must submit a weekly payroll report documenting that each worker was paid the correct prevailing wage rate, with the right fringe benefits, under the right classification. A signed statement of compliance accompanies every report, making the person who signs it legally accountable for the accuracy of the data.
For contractors who've never handled a government project, the requirements can feel overwhelming. For those who have, the challenge isn't understanding the rules. The challenge is executing them accurately across every worker, every week, without errors that trigger back wages, penalties, or worse. Here's how certified payroll in construction actually works, what the reporting requires, and where most contractors get into trouble.
The Legal Foundation: Davis-Bacon and Prevailing Wage
Certified payroll exists because of the Davis-Bacon Act, a federal law passed in 1931 that requires contractors on federally- funded construction projects exceeding $2,000 to pay workers at least the locally prevailing wage rate.
What Prevailing Wage Means
The prevailing wage is the combination of a base hourly wage rate and a fringe benefit amount, determined by the U.S. Department of Labor based on surveys of wages paid to workers in similar occupations in the same geographic area. Wage determinations are published on SAM.gov and specify rates by county, project type (building, residential, highway, or heavy construction), and worker classification.
A prevailing wage determination for an electrician on a highway project in Cook County, Illinois, will differ from the rate for the same classification on a building project in Harris County, Texas. The rates are not national. They reflect local labor market conditions.
How Prevailing Wage and Certified Payroll Connect
Construction certified payroll and prevailing wage compliance are two sides of the same requirement. Prevailing wage sets the standard: what you must pay. Certified payroll provides the proof: documentation that you actually paid it. Every week, the contractor submits a report showing each worker's classification, hours, wage rate, and fringe benefits. The contracting agency reviews these reports to verify compliance.
State-Level Requirements
The federal Davis-Bacon Act covers federally- funded projects. In addition, 32 states have their own prevailing wage laws (often called "Little Davis-Bacon Acts") covering state-funded construction. Reporting requirements, wage thresholds, filing formats, and submission methods vary by state. Nine states implemented new electronic filing mandates in 2025, adding another layer of compliance for multi-state contractors.
What the WH-347 Form Requires
Form WH-347, issued by the U.S. Department of Labor, is the standard certified payroll report. The DOL released an updated version effective January 2025, with enhanced fringe benefit reporting and clearer apprenticeship documentation fields. The old form is accepted through September 30, 2026, after which all submissions must use the updated format.
Required Data Fields
Each weekly WH-347 report must include:
Worker identification: Name, last four digits of SSN, and work classification for every laborer and mechanic on the project
Hours worked: Daily totals and weekly totals, with straight time and overtime hours separated
Pay rates: The base hourly rate paid, and the applicable prevailing wage rate for the classification
Fringe benefits: How fringe obligations are satisfied, whether through cash payments to the worker, contributions to benefit fund plans, or a combination of both
Deductions: Federal, state, and local tax withholdings, plus any other authorized deductions
Net wages: The actual amount paid to each worker
The Statement of Compliance
Every WH-347 submission must include a signed Statement of Compliance (formerly a separate WH-348 form, now consolidated into the WH-347). The person who signs this statement is certifying under penalty of law that the payroll data is accurate, that workers were paid the full prevailing wage, and that no unauthorized deductions were made. False statements carry legal consequences, including potential criminal prosecution.
Who Must Submit Certified Payroll Reports
Every contractor and subcontractor performing work on a covered project must submit their own certified payroll reports. The prime contractor cannot file on behalf of subcontractors. Each entity in the contracting chain is independently responsible for documenting compliance.
Certified payroll applies to all laborers and mechanics on the project, including apprentices. Workers performing exclusively clerical or administrative duties off-site are generally exempt. Reports must be submitted weekly, even during weeks when no work was performed. The prime contractor typically collects subcontractor reports and submits the full package to the contracting agency.
Where Contractors Get Into Trouble
Certified payroll violations are rarely intentional. Most stem from operational errors that compound over time.
Worker Misclassification
Paying a worker at the laborer rate when they're performing journeyman-level work is the most common and most expensive certified payroll error. The DOL examines the actual work performed, not the job title assigned. If a worker is installing electrical conduit, they must be classified and paid as an electrician, regardless of what the contractor calls their position.
Outdated Wage Determinations
Prevailing wage rates are not static. When the DOL publishes an updated wage determination for a project's county and construction type, the new rates apply. Using an expired determination, even one that changed two weeks ago, creates an underpayment on every affected paycheck.
Fringe Benefit Errors
The updated WH-347 requires detailed reporting on how fringe obligations are met. Contractors must specify whether fringes are paid as cash, contributed to benefit plans, or split between both. Misallocating fringe payments is a frequent audit finding.
Late or Missing Submissions
Certified payroll reports are due weekly. A missed filing can result in payment withholding on the entire project until the gap is resolved. For contractors managing multiple prevailing wage projects simultaneously, keeping every report on schedule requires a disciplined process.
Penalties for Non-Compliance
The consequences of certified payroll violations are severe and escalate with the seriousness of the infraction:
Back wages: Workers who were underpaid must receive the difference, plus any applicable interest
Civil fines: Penalties can reach up to $13,508 per violation under current enforcement levels
Payment withholding: The contracting agency can withhold project payments until compliance is restored
Contract termination: Serious or repeated violations can result in termination of the construction contract
Debarment: Contractors found in significant violation can be barred from bidding on federal contracts for up to three years
Criminal prosecution: Willful violations or falsified records can result in criminal charges
How Certified Payroll Software Helps
Manual certified payroll preparation, using spreadsheets or paper forms, is where most errors originate. Certified payroll software built for construction automates the process and reduces compliance risk in several specific ways.
Automated WH-347 Generation
The software pulls worker data, hours, classifications, wage rates, and deductions directly from payroll and generates a completed WH-347 automatically. No re-entry into a separate form, no spreadsheet formulas, no manual data transfer.
Proactive Error Detection
The best platforms flag wage shortfalls, classification mismatches, and fringe calculation errors before payroll is finalized. A system that catches a discrepancy before the pay run prevents a violation. A system that documents the same discrepancy after the fact just records it.
Prevailing Wage Rate Management
Certified payroll software for construction should allow you to configure prevailing wage rates by project, classification, and jurisdiction, and apply them automatically during payroll processing. When a wage determination changes mid-project, the system should flag the update and apply new rates going forward.
Field-to-Report Data Flow
Certified payroll accuracy depends on the quality of the time data feeding it. When field tracking captures hours at the point of work, tagged to the correct project, classification, and cost code, the data entering certified payroll is clean from the start. Paper timesheets reconstructed at the end of the week introduce rounding errors, misattributed hours, and missing classifications that certified payroll reports then inherit.
Union and CBA Integration
For union contractors, certified payroll and union payroll overlap significantly. CBA-mandated wage rates often match or exceed prevailing wage rates in the same jurisdiction. Fringe contributions required by the CBA must be accurately reflected on the WH-347. A platform that handles both in one system eliminates the need to reconcile two separate compliance workflows.
Stay Compliant Without the Weekly Fire Drill
Certified payroll doesn't have to consume your back office every Friday. With the right system, weekly reporting becomes a structured output of accurate payroll processing rather than a manual correction exercise.
Trayd handles certified payroll, prevailing wage compliance, and union logic in a single platform built for trade contractors. Compliance is enforced proactively before payroll runs, and field data flows directly into payroll and reporting without manual re-entry. Book a demo to see how the platform handles your certified payroll workflow.
Frequently Asked Questions
What is certified payroll in construction?
Certified payroll is a weekly payroll report required on federally funded construction projects under the Davis-Bacon Act. Contractors must document each worker's classification, hours, wage rate, fringe benefits, and deductions, accompanied by a signed statement of compliance.
Who is required to file certified payroll reports?
Every contractor and subcontractor performing construction work on a federal project exceeding $2,000 must file independently. The prime contractor collects subcontractor reports and submits the full set to the contracting agency.
What is the WH-347 form?
The WH-347 is the standard certified payroll form issued by the U.S. Department of Labor. An updated version took effect January 2025, consolidating the former WH-348 Statement of Compliance and adding enhanced fringe benefit reporting fields.
What is the difference between prevailing wage and certified payroll?
Prevailing wage is the minimum wage rate (base pay plus fringes) that must be paid on covered projects. Certified payroll is the weekly reporting mechanism that documents and proves the contractor actually paid the required rates.
What are the penalties for certified payroll violations?
Penalties include back wages to affected workers, civil fines up to $13,508 per violation, payment withholding, contract termination, debarment from federal contracts for up to three years, and potential criminal prosecution for willful violations.
Can certified payroll be filed electronically?
Yes. The DOL's 2023 rule update allows contractors to use electronic systems for submitting certified payroll records, provided the system uses legally valid electronic signatures and maintains records for the required three-year retention period. Some states also mandate electronic filing.
