Start free
November 3, 202612 min read

Union Reporting in Construction: What Contractors Must File

Contractor preparing certified payroll paperwork

Union reporting in construction is not one report. It is at least three separate duties that share the same payroll data: certified payroll for prevailing-wage projects, fringe benefit and dues remittances under your collective bargaining agreement (CBA), and the records that back both up. Certified payroll goes to the contracting agency every week. Union and trust fund reports follow the schedule in your CBA. Get the data right once, and every report becomes an export instead of a rebuild.

This guide separates those duties, shows what records you need, explains the deadlines and penalties, and lays out a workflow that keeps small errors from becoming withheld payments.

Designflow-build
Keep Payroll Data Connected
DesignFlow Build brings project management, accounting, and field operations together, helping contractors reduce manual data entry across construction workflows.
Explore the platform

TL;DR

Table of Contents

The three duties people call “union reporting”

When contractors search for union payroll, they usually mean a mix of the following. Each has its own audience.

Duty Who receives it What it contains Cadence
Certified payroll Contracting agency on a prevailing-wage project Names, classifications, hours, rates, deductions, wages paid, signed compliance statement Weekly
Union and fringe remittances Union local, benefit funds, trust funds Hours by member, contribution rates, dues, fund payments Set by the CBA and each trust, often monthly
Supporting records Auditors, agencies, trustees Timesheets, CBAs, employee documentation, contribution records Kept and produced on request

A union shop can owe all three on one job. A non-union shop on a federally funded project still owes certified payroll. A union shop on a purely private job may owe only remittances. Knowing which applies to each project is the first step, and it should be decided at bid time, not at the first pay period.

Which projects require certified payroll

Certified payroll comes from prevailing-wage law, mainly the Davis-Bacon and Related Acts (DBRA) on federally funded or assisted construction. Many states have their own prevailing-wage laws for public work as well, so check the state rules for each project. The contract documents will list the applicable wage determination.

Under Davis-Bacon, the prevailing wage is the basic hourly rate plus any fringe benefits listed for the classification. According to the Department of Labor’s compliance principles, if no fringe benefits are listed, the hourly rate is the full requirement.

That matters for union contractors in a specific way. Your CBA rates and your wage determination rates can differ. Where the determination is higher, you owe the higher figure on that project. Where your CBA is higher, the CBA controls what you pay. Your certified payroll should show what each worker was actually paid, classification by classification.

Which projects require certified payroll

What records you need for union workers

The Department of Labor’s Employment Law Guide on prevailing wages in construction points to the same core file set that union reporting needs: timesheets, CBAs, employee documentation, fringe benefit contribution records, certified payroll reports and union remittance records.

For certified payroll specifically, the DOL’s investigative procedures say contractors must maintain:

The retention period is long. DBRA contractors must preserve payroll records for three years after all work on the prime contract is completed, per the same DOL guide. On a multi-year job, that is a long tail, so records should live somewhere searchable, not in a foreman’s truck.

The fields that cause most errors

Most bad reports trace back to the same few inputs:

  1. Classification drift. A worker who spends the morning as a laborer and the afternoon as an electrician has hours in two classifications. Daily hours must be split, not rounded into one.
  2. Fringe handling. Fringes paid into a fund and fringes paid in cash are reported differently. Mixing them up changes whether you met the determination.
  3. Project coding. Hours posted to the wrong job end up on the wrong certified payroll and the wrong remittance report.
  4. Late timesheets. A weekly deadline leaves no room for Friday sheets that arrive the next Wednesday.

How to submit: the certified payroll side

Certified payroll is a weekly report of what you paid, signed as accurate. Each submission must be accompanied by a signed Statement of Compliance, such as page 2 of Form WH-347, as the DOL explains. Form WH-347 is a common format, but agencies may accept other formats that carry the same information, so confirm what your contracting officer wants.

The practical sequence each week:

  1. Close timesheets by classification and project.
  2. Run payroll and confirm each worker’s rate meets the determination.
  3. Generate the report for each prime contract.
  4. Have the authorized signer review and sign the Statement of Compliance.
  5. Submit to the agency and file a copy.

For a deeper walkthrough, see our guide to audit ready certified payroll reporting and the weekly Davis-Bacon workflow.

How to submit: the union and fund side

Union remittances run on a different clock. Your CBA and each trust fund’s participation agreement set what you report, in what format and by when. A contractor working under several locals can have several calendars: one local wants monthly hours by member, another wants dues with a different cutoff, a third routes health and pension contributions to separate trusts.

The checklist that keeps this manageable:

The discipline here is as much communication as accounting. Your office, your field supervisors and the union’s fund administrators all rely on the same numbers, which is why basic project communication management practices, such as clear owners and a fixed reporting rhythm, pay off.

When reports are due

According to the DOL’s prevailing wage guidance, certified payroll reports are submitted weekly, within seven days after the regular payment date. Union reporting schedules vary by local and trust fund under the CBA, so there is no single national date.

A simple way to stay ahead is to work backward from your payday:

Day Task
Payday Payroll finalized with classifications and fringes
Payday + 1 to 2 days Certified payroll generated and reviewed
Payday + 3 to 4 days Signed and submitted, well inside the seven-day limit
Per CBA Remittance report and fund payment sent

The buffer matters. A report that is ready on day four can be fixed on day five. One that is ready on day seven cannot.

What happens when reports are wrong or late

The consequences are real and escalate. The DOL’s investigative procedures state that contracting agencies may withhold contract funds if a contractor fails to pay required wages or submit required records, including certified payrolls. Beyond that, payroll violations can lead to prosecution for willful falsification and three-year debarment, and paying back wages does not eliminate the possibility of debarment.

For a contractor that depends on public and federally assisted work, withheld progress payments alone can create a cash crunch. Debarment can close the market entirely.

Correcting errors

Catching a mistake yourself is far better than having an auditor find it. A sound correction routine looks like this:

If you receive a notice from an agency or a fund auditor, bring in your labor counsel or a payroll compliance professional before you respond. That advice should be specific to your contract and state.

Other federal reporting that touches contractors

Certified payroll is not the only federal report. Under VEVRAA, covered contractors with federal contracts of $200,000 or more must report annually to the Secretary of Labor on their workforce, including employees by job category and hiring location and qualified covered veterans, according to the DOL’s summary of the Act. Reporting obligations under federal contractor programs have been changing, so check the Office of Federal Contract Compliance Programs site for your current duties before each filing cycle.

These filings draw on the same workforce data as your payroll, which is another reason to keep one clean source of truth.

A workflow that makes union reporting routine

The contractors who find this painless tend to do four things.

Four steps for routine union reporting

Set up each project once. Record whether it is prevailing wage, which determination applies, which local and fund apply, and who signs. Do this at award.

Capture time in the field. Hours entered at the jobsite, by classification and cost code, beat reconstructing them from paper. Weekly deadlines make late timesheets expensive.

Hold rates in one table. Determination rates, CBA rates and fringe splits live in one place and apply automatically by classification and effective date.

Reconcile before you submit. Compare payroll, certified payroll and fund hours for the week. A mismatch is far cheaper to resolve before it leaves the building.

Cash planning belongs in the same routine. Fringe payments and weekly payrolls hit before owner payments arrive, and a 13-week cash forecast shows when they will pinch. For subs on your jobs, vendor compliance tracking and a solid subcontractor onboarding checklist keep their paperwork from becoming your exposure.

Perspective: why union reporting belongs inside your ERP

We see the same pattern at contractors who come to us. Hours live in one spreadsheet, rates in another, job costs in the accounting package, and the certified payroll gets assembled by hand on Thursday night. Nothing is wrong with any single tool. The problem is that every handoff is a place for a classification or a fringe rate to go wrong.

Our view is that union reporting is a data problem before it is a paperwork problem. If time is captured in the field by cost code, if classifications and fringe rates sit next to the payroll that uses them, and if job costing reads from the same record, then certified payroll and remittance reports stop being projects. They become outputs.

That is why we built DesignFlow Build as one AI-native construction ERP covering project management, accounting and field operations. Our accounting includes certified payroll and job costing by cost code, our mobile app and voice data entry are designed to get hours in at the source, and our compliance automation is designed to keep documents like COIs and lien waivers from slipping. We are designed to reduce manual data entry, which is exactly where reporting errors start.

You do not need an army of consultants to get there. Our implementation is designed for self-implementation in 2 to 4 weeks.

Keith

See it in your own numbers

If your weekly reporting still runs through Excel and a separate accounting package, the quickest test is to run one live project through a single system and compare the output to what you file today. DesignFlow Build has a free plan with core features, so you can start without a purchase order. Paid plans add advanced automation, AI and integrations: Pro is $100 per month per office user, and Field seats are $25 per month per user. See the details on our pricing page, or look at how the construction ERP ties payroll, job costing and field work together.

Designflow-build

Field crews can log time from the mobile field app, so hours reach payroll by classification and project without retyping. Start free and run your next weekly payroll through it.

FAQ

Is union payroll the same as certified payroll?

No. Certified payroll is a weekly report to the contracting agency on prevailing-wage projects, signed with a Statement of Compliance. Union payroll reporting usually means the hours, dues and fringe contributions you report to the local and its trust funds under the CBA. The same worker hours feed both, but the recipients, formats and deadlines differ.

How long do I have to keep union and certified payroll records?

On DBRA projects, payroll records must be kept for three years after all work on the prime contract is complete, according to the Department of Labor. Your CBA, trust fund agreements or state law may require longer, so follow the longest period that applies to you.

What is the deadline for certified payroll?

Certified payroll reports are submitted weekly, within seven days after the regular payment date, per the DOL’s guide. Union and fund reports follow the schedule in each CBA and trust agreement, so confirm each one with the local or fund administrator.

What if I find a mistake after submitting?

Correct the source record, pay any underpayment, and resubmit a corrected report with your documentation. Acting before an audit shows good faith, though the DOL notes that paying back wages does not remove the possibility of debarment in serious cases. For a significant error, talk to labor counsel before you respond to the agency.

Sources