What You Need to Know About Certified Payroll for Subcontractors

Certified payroll requirements apply directly to subcontractors working on federally funded construction projects.

If you’re a subcontractor working on a government funded construction project, you are required to run certified payroll for your employees and submit those reports to the general contractor — every week.

Falling behind on that deadline can put your payment on hold, and a pattern of missed submissions can put the working relationship at risk.

It’s a common challenge. Certified payroll is one of the most common compliance concerns in the industry.

For example, in fiscal year 2023 alone, the U.S. Department of Labor’s Wage and Hour Division (WHD) recovered nearly $15 million in back wages for more than 3,500 workers under the Davis-Bacon and Related Acts — the prevailing wage law that governs certified payroll on federal projects.

The paperwork itself isn’t the hard part. The hard part is knowing what’s required of you, what the general contractor is checking for and what’s at stake when something slips.

Why Your General Contractor Is Counting on You

Certified payroll compliance for subcontractors directly affects the general contractor’s ability to stay compliant on a government-funded project.

General contractors are legally responsible for certified payroll compliance across the entire project — including the work you do.

That means when you work on a federally funded project, your certified payroll reports aren’t optional — they’re part of what keeps the general contractor compliant, too.

The general contractor will be verifying your submissions — checking that reports arrived on time, wage rates match the project’s wage determination and labor classifications are accurate.

If there’s a discrepancy in your reports, the prime contractor can still be held responsible — even when the issue originates on the subcontractor side.

That’s meaningful liability exposure for the general contractor — which is why timely, accurate certified payroll submissions matter so much for maintaining that relationship and being considered for future work.

Federal and State Prevailing Wage Laws Both Apply

Certified payroll requirements for subcontractors are governed by both federal and state prevailing wage laws.

The Davis-Bacon Act governs certified payroll requirements on federally funded construction projects, requiring weekly submissions and compliance with federal wage determinations.

But federal law is only part of the picture.

Most states have their own prevailing wage statutes — sometimes called “little Davis-Bacon” laws — with different rates, thresholds and reporting formats. Some are more stringent than the federal standard.

The prime contractor is responsible for letting you know which rules apply on their project — and it’s worth making sure your team understands what’s required for execution.

If you’re working across multiple states, it’s a good idea to confirm which rules apply to each job rather than assuming one set covers all of them.

How Data Collection for Subcontracting Actually Works

Certified payroll reporting for subcontractors isn’t a one-time task — it’s a weekly process. Without a clear workflow, it’s easy for submissions to slip.

What Subcontractors Are Required to Do

Subcontractors must meet certified payroll requirements on every Davis-Bacon-covered project, including how workers are paid, reported and documented each week.

Subcontractors must fulfill three core obligations:

• Pay prevailing wages — every worker on a covered project must be paid at least the wage rate set in the project’s wage determination for their trade classification, including required fringe benefits
• Run weekly certified payroll reports — typically using Form WH-347 or a state-required equivalent, listing every employee, their hours, classification and gross wages for that work week
• Submit those reports to the general contractor — every week, by the deadline the general contractor specifies.

The general contractor is responsible for collecting your submissions and forwarding them to the contracting agency.

General contractors rely on those submissions to meet compliance obligations under the Davis-Bacon Act

Your general contractor may direct you to upload directly through a compliance platform like LCPtracker or eMars, which the agency can also access, but the general contractor remains responsible for ensuring your reports reach the contracting agency.

When workers cross state lines or work in multiple cities, the complexity multiplies fast.

The data collection process typically includes:

• Time records broken down by project and classification
• Fringe benefit tracking to confirm total compensation meets the required rate
• Signed statements of compliance (usually WH-347 or a state equivalent)
• Electronic uploads to platforms like LCPtracker, eMars or DiR

When this process is manual, it’s slow and prone to errors.

Transposing a wage rate or mislabeling a classification can trigger a deficiency notice — which means combing through weeks of certified payroll records to find and fix the problem.

What Happens When Subcontractors Don’t Submit

Failure to submit certified payroll reports on time puts payment at risk and can lead to formal enforcement action against the subcontractor, the general contractor and in some cases the project owner.

The immediate consequence for the subcontractor is usually a withheld progress payment.

Contracting officers must flag missing submissions before approving invoices, so outstanding reports can stall payment for the sub.

If a pattern develops, the stakes climb for everyone.

Subcontractors can face back wage assessments, fines and debarment from future public work.

The prime contractor faces those same risks — including being required to pay restitution to workers on the sub’s crew — because the prime contractor is jointly responsible for prevailing wage compliance across the project.

Debarment can follow a company for years and shut off access to an entire category of work.

The general contractor’s legal liability doesn’t disappear even when issues originate on the subcontractor side — they can still be required to make workers whole.

It’s one reason that consistent compliance matters so much for long-term working relationships.

Understanding Flow-Down Clauses

Flow-down clauses are contract provisions that legally extend general contractor obligations — including certified payroll requirements — directly onto subcontractors.

If you’re a subcontractor and you’ve signed the contract, those compliance obligations are part of what you’ve agreed to.

Most public works contracts explicitly extend Davis-Bacon requirements, prevailing wage obligations and reporting standards to all subcontractors.

Signing that subcontract means agreeing to those terms, so it’s worth reviewing them carefully before work begins.

General contractors increasingly use project management platforms to track subcontractor submissions in real time, making it easier to catch gaps early.

Before work starts, review the flow-down clauses in your subcontract carefully — not to determine whether the law applies, but to understand exactly how compliance is structured on that project.

If you’re on a covered government project, Davis-Bacon requirements apply even if the flow-down language was inadvertently left out of your subcontract. The systems you have in place to meet those obligations will determine whether compliance is a burden or a routine.

The Bottom Line: Compliance Shouldn’t be Complicated

Certified payroll for subcontractors affects every layer of a public works project. General contractors review submissions closely.

Contracting agencies conduct audits. And the consequences of getting it wrong — withheld payments, back wage assessments, debarment — don’t stay contained to the party that made the mistake. They ripple up and down the project chain.

The good news is that certified payroll compliance isn’t out of reach.

If managing certified payroll, prevailing wage calculations and union reporting in-house is creating compliance risk or operational strain, Payroll4Construction was built for exactly this.

As a construction-specific payroll service, it handles the complexity that general payroll providers aren’t equipped for:

• Automated certified payroll reports
• Pre-formatted electronic filing
• Accurate fringe tracking across multiple trades and jurisdictions

Your team spends less time on payroll administration, and your compliance record stays intact.