5 Common WH-347 Mistakes That Lead to Davis-Bacon Violations

The WH-347 form is the standard format used to satisfy the weekly certified payroll requirement on Davis-Bacon covered projects (the weekly data and Statement of Compliance are what the regulation requires; the WH-347 is the optional standard form nearly everyone uses). It looks straightforward — worker names, classifications, hours, wages, deductions — but small errors on this form can snowball into serious federal compliance problems. The Department of Labor's Wage and Hour Division (WHD) reviews these forms closely, and patterns of mistakes are one of the most common triggers for formal investigations.

In this article, we break down the five most frequent WH-347 mistakes we see contractors make, explain why each one matters, what penalties you could face, and how to make sure it never happens on your projects.

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Mistake #1: Wrong Worker Classifications

What It Is

Worker misclassification is the single most common Davis-Bacon violation. It happens when a contractor lists a worker under the wrong trade or skill classification on the WH-347 — for example, reporting a journeyman carpenter as a "helper" or "laborer" to justify paying a lower prevailing wage rate.

The DOL has very specific wage determinations for each project that list approved classifications and their corresponding wage and fringe benefit rates. Every worker on your certified payroll must be classified according to the actual work they perform, not the title you assign them in your internal system.

Why It Matters

The Department of Labor views misclassification as a form of wage theft. If a worker is performing carpenter work but classified and paid as a laborer, they are being underpaid — potentially by $10-$20 per hour or more depending on the wage determination. Across multiple workers and weeks, this adds up to significant back-wage liability.

What the Penalty Is

• Back wages: You must pay the difference between what was paid and the correct prevailing wage rate for every affected hour, plus fringe benefits owed
• Contract termination: The contracting agency can terminate your contract for cause
• Debarment: Contractors found to have disregarded their obligations to workers can be debarred from all federal contracts for 3 years (29 CFR 5.12)
• Liquidated damages: $33 per worker for each calendar day of an overtime violation, a fixed amount rather than a discretionary maximum (29 CFR 5.5(b)(2); DOL adjusts it periodically for inflation)

How to Avoid It

Classify workers based on the actual work performed, not their job title or internal role. Before the project starts, review the wage determination and map each worker to the correct classification. If a worker performs duties across multiple classifications in a single day, they must be paid the highest applicable rate — or you must keep detailed time records for each classification.

CertifiedPayrollPro includes built-in wage determination lookups that auto-populate the correct classifications and rates for your project location. When you assign a worker, the system flags any rate that falls below the required prevailing wage before you submit.

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Mistake #2: Not Including Fringe Benefits Properly

What It Is

Davis-Bacon prevailing wage rates have two components: the basic hourly rate and the fringe benefit rate. Many contractors either forget to account for the fringe portion entirely, report it incorrectly on the WH-347, or fail to demonstrate how fringe obligations are being met (cash payment vs. bona fide benefit plans).

The WH-347 requires you to show how fringe benefits are handled: cash paid in lieu of fringes goes in column 6C, plan contributions are credited in column 6B as the week's total, and the per-plan hourly credits are itemized in the Hourly Credit for Fringe Benefits table on page 2, under certification 5. Leaving the fringe method unclear, or reporting it inconsistently between the columns and the page-2 table, is an immediate red flag.

Why It Matters

Fringe benefits can represent 30% or more of the total prevailing wage obligation. Failing to pay fringes properly is functionally the same as underpaying workers. The DOL does not accept "I didn't understand the fringe requirement" as a defense — it is your legal obligation to calculate and pay or contribute the full amount.

What the Penalty Is

• Back payment of fringe benefits: The full fringe amount owed for every worker-hour on the project
• Interest and administrative costs: Depending on how long the violation persisted
• Increased scrutiny: Once a fringe violation is found, investigators typically audit all of your current and recent projects

How to Avoid It

Know the fringe obligation for every classification on your wage determination. Decide early whether you will pay fringes in cash (added to the hourly rate on each paycheck) or contribute to qualifying benefit plans (health insurance, retirement, etc.). Document your approach and be consistent. If you use a mix of plan contributions and cash, our free fringe benefit calculator shows the exact cash top-up owed per hour for each classification.

CertifiedPayrollPro automatically calculates fringe benefit obligations alongside base wages, ensuring the total compensation meets or exceeds the prevailing wage determination. The system fills Columns 6B and 6C and the page-2 Hourly Credit for Fringe Benefits table from your benefit setup, so you never submit a form with missing fringe documentation.

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Mistake #3: Late Submissions (Missing the Weekly Deadline)

What It Is

Federal regulations require certified payroll reports to be submitted weekly, specifically within seven days after the regular payment date for that payroll period (29 CFR 3.4(a)). The clock runs from the day you pay the workers, not from the day the pay period ends. Many contractors fall behind, submitting reports monthly, in batches, or only when the general contractor or agency asks for them. Some don't submit at all until close-out.

Why It Matters

Late submissions are a compliance violation in themselves, but they also raise a much bigger concern for investigators: if you can't file your payroll reports on time, are you actually tracking and paying wages correctly in real time? Late filings are a strong signal that something else may be wrong, and they frequently trigger deeper audits.

Additionally, general contractors are responsible for collecting and submitting subcontractor payrolls. If your reports are late, you're creating compliance risk for the GC — who may choose not to work with you on future projects.

What the Penalty Is

• Contract payment withholding: Agencies can withhold progress payments until payrolls are current
• Breach of contract: Consistent late filings can be treated as a material contract breach
• Monetary penalties: Liquidated damages of $33 per worker for each calendar day of an overtime violation (29 CFR 5.5(b)(2); adjusted periodically for inflation)

How to Avoid It

Build certified payroll into your weekly workflow, not something you catch up on at the end of the month. Set a recurring reminder for the day after each pay period ends. Make sure whoever prepares your payroll understands the weekly deadline is non-negotiable on prevailing wage projects.

CertifiedPayrollPro sends automatic deadline reminders and tracks submission status for every active project. The dashboard shows exactly which payroll periods are pending, due, or overdue — so nothing falls through the cracks even when you're managing multiple projects simultaneously.

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Mistake #4: Math Errors in Deduction Columns

What It Is

The WH-347 requires detailed reporting of all deductions — federal and state taxes, FICA, union dues, health insurance premiums, garnishments, and any other amounts withheld from a worker's gross pay. Math errors here are surprisingly common: columns that don't add up, deductions that exceed gross pay, or net pay figures that don't reconcile with the reported gross and deduction amounts.

Why It Matters

Arithmetic errors undermine the credibility of your entire payroll submission. An investigator who finds math errors will question whether the underlying wage data is accurate. Even innocent calculation mistakes suggest carelessness that warrants further review.

More importantly, unexplained or excessive deductions can indicate kickback schemes — where a contractor pays the prevailing wage on paper but takes money back through fabricated deductions. The DOL's Anti-Kickback Act (Copeland Act) makes this a federal crime.

What the Penalty Is

• Form rejection: The contracting agency may reject your payroll and require resubmission, delaying payment
• Investigation trigger: Repeated math errors trigger audit flags in DOL's review system
• Criminal liability: If errors are interpreted as concealing kickbacks, penalties include criminal fines and imprisonment of up to five years (18 U.S.C. 874)

How to Avoid It

Always double-check your math before signing and submitting. Make sure gross pay minus total deductions equals the reported net pay for every worker on every line. Verify that deduction descriptions are clear and that each deduction type is properly categorized.

CertifiedPayrollPro eliminates manual math entirely. The system auto-calculates gross pay, deductions, and net pay based on your payroll data, and runs validation checks before generating the WH-347. If any line doesn't reconcile, you'll see a clear error message before the form is finalized — not after it's been submitted and flagged.

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Mistake #5: Missing or Incorrect Certifier Signature

What It Is

Page 2 of the WH-347 is the Statement of Compliance — a legal certification that the payroll information is correct, that all workers were paid the prevailing wage, and that no prohibited deductions were made. This page must be signed by an authorized representative of the contractor. Missing signatures, unsigned submissions, or signatures from unauthorized personnel are all violations.

Why It Matters

The signature on the Statement of Compliance is not a formality. It is a legal certification, and willfully falsifying it can carry criminal liability under 18 U.S.C. 1001 and civil liability under the False Claims Act (31 U.S.C. 3729). Submitting a WH-347 without a proper signature means you haven't actually certified your payroll. The form is incomplete and non-compliant, regardless of whether the underlying data is accurate.

The person who signs must have actual knowledge of the payroll data and the authority to certify on behalf of the company. Having a random office employee sign without reviewing the data is itself a compliance risk.

What the Penalty Is

• Automatic rejection: Unsigned or improperly signed payrolls are treated as not submitted
• False certification: Knowingly signing a false Statement of Compliance can result in criminal charges under the False Statements Act (18 U.S.C. 1001), with fines and imprisonment
• Personal liability: The individual signer can be held personally liable for false certifications

How to Avoid It

Designate one or two authorized signers in your organization who understand certified payroll requirements. Establish a review process where the signer reviews the payroll data before certifying. Never sign a blank or incomplete form — review every line before signing.

CertifiedPayrollPro includes a built-in review and digital signature workflow. Authorized certifiers can review the complete payroll, verify all calculations and classifications, and apply their digital signature directly in the system. The platform won't allow form generation without a completed certification, ensuring you never accidentally submit an unsigned report.

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Don't Let These Mistakes Cost You Your Federal Contracts

Every one of these five mistakes is preventable. The contractors who get into trouble aren't usually trying to cheat the system — they're overwhelmed by paperwork, using error-prone spreadsheets, or simply don't understand the requirements well enough. The WH-347 demands precision and consistency, and manual processes make that incredibly difficult at scale.

The good news is that purpose-built certified payroll software eliminates the most common error categories entirely. Auto-calculations prevent math errors. Built-in wage determinations prevent misclassification. Deadline tracking prevents late submissions. And digital certification workflows prevent missing signatures.