How to Fill Out and Submit the Public Works Payroll Reporting Form

To file the California public works payroll reporting form, contractors and subcontractors complete Form A-1-131 for each weekly payroll on a state-funded prevailing wage project, have an authorized officer certify the data under penalty of perjury, and submit it electronically through the Department of Industrial Relations (DIR) online portal. The form captures every worker’s hours, pay rate, deductions, and fringe benefits for the week. Filing must happen at least every 30 days while work is ongoing, though most contracts require weekly submission, and missing a records request costs $100 per worker per calendar day.¹

Where to Download the Blank Form

DIR hosts the current fillable PDF of Form A-1-131 on its DLSE forms library under the public works section.² The form has two parts: the payroll grid where worker hours and pay are entered, and the Statement of Employer Compliance where a company officer certifies the data. Most contractors work the paper form or an internal spreadsheet first, then transfer the data into DIR’s electronic system for official submission.

What to Gather Before You Start

California Labor Code 1776 lists the data every certified payroll record must contain.¹ Pull the following together before you sit down with the form:

Contractor information: business name, address, contractor’s license number, specialty license number if applicable, and workers’ compensation policy number.
Project information: project name, physical work location, the contract or project number from the awarding body, and the DIR Project ID (the number DIR assigns when the awarding body files its public works project notice).
Employee details: full name, home address, and Social Security number for every worker who performed any labor on the project that week.
Work classifications: the specific craft or trade that matches the applicable prevailing wage determination. DIR publishes current rates on its wage determination page, organized by craft and county.³
Daily time records: straight time and overtime hours for each day, broken out separately.
Pay rates and deductions: the gross hourly rate, all deductions (federal tax, FICA, state tax, SDI, union dues, and any others), and every fringe benefit contribution, whether paid to a fund or included in the hourly cash wage.

If a worker performs under more than one classification during the same week, report each classification on a separate line for that employee. The prevailing wage rate differs by craft, so mixing classifications on one line makes the math wrong and invites audit questions.

Filling Out the Payroll Grid

The payroll grid runs across the page in nine numbered columns.⁴ Start with the header fields. Enter the payroll number (a sequential number you assign, starting at 1) and the “Week Ending” date, which is the last day of that payroll period. Then fill in your contractor name, license numbers, address, workers’ comp policy number, and the project details.

For each employee row:

Column 1 records the worker’s full legal name, home address, and Social Security number.
Column 2 shows the number of federal and state withholding exemptions the employee claims.
Column 3 is the work classification. Use the prevailing wage craft designation such as “Electrician — Inside Wireman” or “Laborer — Group 1.” It must match the classification in the applicable DIR wage determination.
Column 4 has seven sub-columns for daily hours, Monday through Sunday. Record straight time hours marked “S” and overtime hours marked “O” on separate lines.
Column 5 totals the daily hours for the week, straight time and overtime totaled separately.
Column 6 is the gross hourly rate, which must equal or exceed the prevailing wage rate for that classification and location.
Column 7 shows gross earnings: straight time hours multiplied by the hourly rate, plus overtime hours at the applicable overtime rate.
Column 8 breaks out deductions and contributions in sub-rows: federal tax, FICA, state tax, SDI, vacation/holiday, health and welfare, pension, training fund, fund administration, dues, travel/subsistence, savings, and a catch-all “Other” line. The form totals these at the bottom.
Column 9 is net wages paid, which is Column 7 minus the total from Column 8.

Check every row’s arithmetic before moving on. The most common errors auditors flag are overtime rate miscalculations and fringe benefit amounts that don’t add up to the required prevailing wage total. Verify each worker’s total compensation (hourly cash wage plus employer-paid fringe contributions) against the published prevailing wage determination for the craft and county.

Reporting Fringe Benefits Correctly

Fringe benefit reporting is where most Form A-1-131 mistakes happen. DIR’s prevailing wage determinations list a required hourly amount for fringe benefits, typically split among health and welfare, pension, vacation/holiday, and training fund contributions. You satisfy the requirement in one of two ways: pay the fringe amounts into approved benefit plans or funds, or pay the equivalent amount directly to the worker as additional hourly cash wages.

Column 8 captures both approaches. If you contribute to a trust fund or third-party administrator, enter those amounts in the appropriate sub-rows. If you pay the fringe amount as cash to the worker instead, the hourly rate in Column 6 should reflect that, meaning the cash hourly rate will be higher than the base prevailing wage rate because it includes the fringe component.

The Statement of Employer Compliance asks you to declare which approach you use. Getting this wrong is more than a paperwork problem. If total compensation falls short of the prevailing wage determination, the shortfall counts as a wage violation.

Signing the Statement of Employer Compliance

The second page of Form A-1-131 is the certification. A person with authority over payroll, typically a company owner, officer, or payroll manager, vouches that the numbers on the payroll grid are accurate and that the company paid at least the prevailing wage for every hour reported.⁴

Print the signer’s full name and their position in the company. The form then asks you to confirm how fringe benefits were handled: paid into approved plans, paid as cash to workers, or a combination. Check the correct box. If contributions go to a fund, keep the fund administrator’s name and contact information on hand in case the awarding body or DIR requests verification.

The signature line carries real legal weight. Under California Penal Code 118, anyone who certifies a statement under penalty of perjury while knowing it contains false information commits perjury, which is a felony.⁵ The signer should personally review every line of the payroll data. If an error surfaces later, the person whose name is on that certification is the one who answers for it.

Submitting Through DIR’s Online Portal

California requires electronic submission of certified payroll records through DIR’s online portal. The statute directs contractors and subcontractors to furnish payroll records to the Labor Commissioner electronically, in the format DIR prescribes on its website.⁶

Setting Up Your Account

Before you can file anything, you need a user account on DIR’s Public Works Online System at services.dir.ca.gov/gsp. DIR’s Support Center provides step-by-step PDF guides and video walkthroughs covering account creation, linking your contractor registration, and navigating the system.⁷ Once your account is active, you will need the DIR Project ID to locate the correct project in the system. Ask the awarding body or general contractor for it if you don’t already have it.

Two Ways to Enter Payroll Data

The portal offers two options. You can use the online form (DIR calls it the “iForm”) to manually type each employee’s hours, rates, and deductions. Or you can upload an XML file built to DIR’s CPR XML schema, which works well if your payroll software can generate that format. DIR publishes the XML schema and detailed formatting guidelines on its certified payroll reporting page.⁸

Whichever method you use, review the data on screen before submitting. The system generates a confirmation receipt with a unique submission ID. Save it. That receipt is your proof of timely filing if questions come up later.

When You Must Submit

Certified payroll records must go to the Labor Commissioner at least once every 30 days while work is being performed on the project, and within 30 days after the final day of work. Your contract with the awarding body may require more frequent submission, and many contracts call for weekly filings.⁶ DIR considers weekly submission a best practice even when the contract doesn’t explicitly require it.⁹ Check your contract language. If it says weekly, that’s your binding deadline regardless of the statutory monthly minimum.

Separately, if an awarding body or the Division of Labor Standards Enforcement sends a written request for your payroll records, you have 10 days from receipt of that request to produce certified copies.¹ This is a different obligation from routine electronic filing and can come at any time, including long after the work is done.

Penalties for Late or Missing Records

The penalty for blowing the 10-day response window is $100 per calendar day (or any portion of a day) for each worker whose records are missing, running until you deliver the records.¹ On a crew of 15 workers, that’s $1,500 per day. The Labor Commissioner can direct the awarding body to withhold those penalty amounts from your progress payments, so the money comes straight off the top of what you’re owed.

Common Mistakes to Avoid

The same errors show up on Form A-1-131 over and over:

Wrong work classification. Using a generic title like “helper” when the wage determination calls for “Laborer — Group 2.” The classification must match DIR’s published determination exactly, or the prevailing wage rate won’t line up.
Mixing straight time and overtime on one line. The form separates these for a reason. California overtime rules for public works follow Labor Code 1815: anything over eight hours in a day or 40 hours in a week is overtime at not less than one and a half times the basic rate.
Fringe benefit math errors. Listing an employer’s contribution to a health plan without confirming the hourly equivalent meets the required amount. Divide the annual or monthly cost by the actual hours worked to get the per-hour figure, then compare it to the required rate.
Leaving the “Week Ending” date blank or inconsistent. The date must match your actual payroll cycle. A mismatch between the form date and your pay stubs will raise flags.
Unsigned or undated certification. A payroll submission without a signed Statement of Employer Compliance is not a certified payroll record. It’s just a spreadsheet.

Getting these details right on the front end is easier than correcting them after DIR or an awarding body flags a deficiency. Once a payroll record comes back with questions, the clock is already running on your 10-day response window.

1
California Legislative Information. California Code Labor Code 1776
2
Department of Industrial Relations. Public Works
3
Department of Industrial Relations. Director’s General Prevailing Wage Determinations
4
Department of Industrial Relations. California Public Works Payroll Reporting Form A-1-131
5
California Legislative Information. California Code PEN 118 – Perjury
6
California Legislative Information. California Code Labor Code 1771.4
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Department of Industrial Relations. Support Center
8
Department of Industrial Relations. Certified Payroll Reporting
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California Department of Industrial Relations. Frequently Asked Questions on Certified Payroll Reporting