Why Certified Payroll Accuracy Matters
The Department of Labor's Wage and Hour Division conducts thousands of Davis-Bacon investigations each year, recovering millions of dollars in back wages for construction workers. Many of these violations stem from avoidable errors — mistakes that contractors make repeatedly due to misunderstanding the rules, cutting corners, or relying on manual processes prone to human error.
Below are the ten most common certified payroll mistakes that lead to DOL enforcement actions, along with practical guidance on how to avoid them.
1. Worker Misclassification
This is consistently the most common Davis-Bacon violation. Misclassification occurs when a contractor assigns a worker a classification that does not match the actual duties performed — typically a lower-paid classification to reduce labor costs. The DOL determines classification based on the work actually performed, not the worker's job title. For example, a worker performing electrician duties must be classified and paid as an electrician, even if the contractor calls them a "general laborer."
How to avoid it: Review the wage determination classifications carefully. When in doubt, classify up, not down. Track what each worker does on the job site each day.
2. Failing to Pay the Full Prevailing Wage Rate
Some contractors pay the basic hourly rate but fail to account for the fringe benefit portion of the prevailing wage. The total prevailing wage includes both the basic rate and the fringe rate. If you do not contribute the fringe amount to a bona fide plan, you must pay it as cash wages to the worker.
How to avoid it: Always calculate total compensation as basic rate plus fringe. Verify that your total payment meets or exceeds the full prevailing wage for each classification.
3. Inaccurate or Incomplete Daily Hour Tracking
The WH-347 requires daily hours broken out by straight time and overtime. Estimating hours rather than tracking them accurately is a recipe for violations. The DOL expects records to reflect actual hours worked on the covered project each day of the week.
How to avoid it: Use daily time sheets signed by workers and supervisors. CertifiedPayrollPro integrates time tracking directly into the payroll workflow, ensuring daily hours flow accurately onto the WH-347.
4. Incorrect Overtime Calculations
Under the Contract Work Hours and Safety Standards Act (CWHSSA), overtime on Davis-Bacon projects must be calculated at 1.5 times the basic hourly rate — not the total rate including fringe benefits. Some contractors mistakenly calculate overtime on the total rate (overpaying) while others fail to pay overtime at all (underpaying and violating the law).
How to avoid it: Know the formula: OT rate = basic hourly rate x 1.5. Fringe benefits are owed at the straight-time rate for all hours, including overtime hours.
5. Late or Missing Certified Payroll Submissions
Certified payroll must be submitted weekly. Late submissions raise red flags with contracting agencies and can trigger investigations. Even for weeks when no work was performed on the project, a "no work" payroll should be submitted to maintain the sequential record.
How to avoid it: Set a recurring weekly deadline for payroll preparation and submission. Automate reminders and use payroll software that generates reports on schedule.
6. Unsigned or Incomplete Statement of Compliance
The Statement of Compliance on page 2 of the WH-347 must be signed by an authorized company officer. Submitting the payroll data without a signed certification means the payroll is effectively not certified. The DOL and contracting agencies treat unsigned payrolls as noncompliant.
How to avoid it: Build the signature step into your submission process. Electronic signatures are generally accepted when permitted by the contracting agency.
7. Not Reporting All Workers on the Project
Every laborer and mechanic who performs any work on the covered project site during the payroll week must be included — even if they only worked a few hours. Owners and partners who perform manual labor on the site must also be reported.
How to avoid it: Cross-reference your daily sign-in logs with the payroll report. Make sure no one is left off.
8. Using Full Social Security Numbers
The DOL's WH-347 instructions explicitly state that only the last four digits of a worker's SSN should appear on the form, or alternatively an employee identification number. Including full SSNs creates privacy and identity theft risks and does not comply with current DOL guidance.
How to avoid it: Configure your payroll system to mask SSNs automatically. CertifiedPayrollPro displays only the last four digits on all generated forms.
9. Failing to Pay Apprentices Correctly
Apprentices on Davis-Bacon projects must be enrolled in a program registered with the DOL's Office of Apprenticeship or a recognized state apprenticeship agency. They must be paid no less than the percentage of the journeyman rate specified in their apprenticeship agreement. If an apprentice is not properly registered, they must be paid the full journeyman rate.
How to avoid it: Verify apprentice registration before assigning them to a covered project. Keep copies of apprenticeship agreements in your project files.
10. Kickbacks and Unauthorized Deductions
The Copeland Anti-Kickback Act prohibits any deduction from workers' wages that is not legally permitted or voluntarily authorized by the employee. Unauthorized deductions — even for seemingly legitimate purposes like tools or uniforms — that reduce a worker's pay below the prevailing wage rate constitute a violation.
How to avoid it: Only take deductions that are permitted by law (taxes, court-ordered garnishments) or voluntarily authorized in writing by the employee. Ensure that after all deductions the worker still receives at least the prevailing wage.
Building a Culture of Compliance
The common thread across all of these mistakes is that they are preventable with the right processes and tools. Investing in training for your payroll staff, establishing clear internal controls, and using purpose-built certified payroll software like CertifiedPayrollPro dramatically reduces the risk of violations and the costly enforcement actions that follow.
