California certified payroll: A contractor's guide

California certified payroll requires contractors on public works projects to verify that all jobsite workers are paid the prevailing wage. 

Federal projects follow Davis-Bacon Act requirements, but California state-funded public works projects must also meet California Department of Industrial Relations (DIR) regulations and use Form A-1-131. Staying on top of these reporting standards is the only way to maintain project funding and avoid labor disputes.

This guide details California-specific certified payroll requirements and identifies when and where they apply, how to complete accurate certified payroll reports, and the mistakes that trigger DIR penalties.

What is certified payroll, and why is California different?

Certified payroll is a public works compliance requirement that obligates contractors to document and verify that every worker on a job was paid the correct prevailing wage and benefits. The primary tool for meeting that requirement is the certified payroll report (CPR), a weekly record submitted to the relevant government authority that details hours worked, job classifications, wage rates, and fringe benefits paid for each worker.

Federal projects are subject to the Davis-Bacon Act, which requires contractors to submit Form WH-347 weekly. Many states allow construction companies to use this form for state-funded projects, too. However, California requires contractors to use the DIR electronic certified payroll reporting (eCPR) system to submit the Form A-1-131. 

Several other factors make California’s construction certified payroll more complex, including:

• Higher prevailing wage rates: California wage floors often exceed federal standards.
• Daily overtime rules: Unlike the federal overtime standard of above 40 hours in a week, California requires overtime pay for any nonexempt work exceeding eight hours in a day.
• Trade-specific classifications: The DIR provides granular wage determinations based on workers’ craft.
• Strict fringe benefit treatment: California requires contractors to compute credits for health insurance or retirement plans annually under laws like AB 889.
• Mandatory electronic reporting: Most projects require weekly submissions through the eCPR system using the A-1-131 form.
• Regular audits: The California Labor Commissioner’s Office regularly conducts audits and random on-site visits to verify that crews’ jobsite work classifications match state payroll records. This level of oversight means the agency is likely to catch and flag even small compliance mistakes.

When is certified payroll required in California?

According to Labor Code Section 1720, every contractor and subcontractor on a public works jobsite in California must submit records to the DIR weekly. 

A project meets these conditions when all of the following are met:

• The crew performs construction, alteration, demolition, installation, or repair work.
• The state, county, or local government entity fully or partially funds the project. 
• The project’s total value exceeds $1,000. Note that this is lower than the federal Davis-Bacon Act standard of $2,000.

How to do certified payroll in California: 5 steps

Here are five steps construction companies can take to keep certified payroll data moving while maintaining accuracy. 

Step 1: Confirm the project is a public works job.

Before any work begins, verify the project’s status by searching the DIR’s database for its DIR Project ID, often called a “PWC-100” number. The DIR generates this ID when an awarding body submits a PWC-100 form to the state. 

Ensure the project is active by using the search tool to locate the project by name, location, or awarding body, and use the ID for any future electronic submissions to link the company’s payroll records to that government contract. 

Step 2: Use the correct wage determinations.

Identify the prevailing wage for every job classification in the county where the crew performs the work. The DIR issues these determinations twice a year, on February 22 and August 22. 

While the bid advertisement date typically determines which wage “series” applies to the project, contractors must also check the determination for a double asterisk (**). If this symbol is there, the contractor must pay predetermined wage increases. A single asterisk indicates that prevailing wage determinations that are in effect on the bid’s date of advertisement remain in effect for the life of the project.

Step 3: Track hours daily.

Contractors must record crew start times, end times, and meal breaks daily. Using a system like Miter Time Tracking ensures companies capture these timecard entries in the field so the office has precise hours for payroll processing.

Step 4: Report fringe benefits accurately.

Prevailing wage includes base hourly rate and all required employer-paid fringe benefits like health insurance and retirement plans. Calculate the hourly costs of these benefits, and credit them toward the total wage. 

Under AB 889, contractors may claim credit for employer-paid fringe benefits toward public works prevailing wage requirements. To convert each benefit into an hourly credit, the contractor must divide the total annual cost of the benefit by the total number of hours worked on all projects throughout the year. The law requires them to carry out this calculation every year to ensure they don’t overclaim credits on public works jobs.

Step 5: Submit certified payroll reports properly.

While Labor Code 1771.4 only requires contractors to submit records to the DIR at least monthly, most project contracts and labor compliance programs (LCPs) require weekly submissions. Also, under Labor Code 1776, if the DIR or an awarding body makes a formal written request for records, the contractor has exactly 10 days to provide them. If they miss this window, they face a penalty of $100 per worker, per day.

To avoid this, upload an XML file to the DIR eCPR system and include a signed Statement of Compliance based on DIR Form A-1-131. This is to certify that wages and classifications match the work performed.

Mistakes to avoid on California certified payroll

Preparing certified payroll in California is notoriously difficult, and many contractors struggle with the complex requirements. In fact, between 2024 and 2025, the San Francisco Office of Labor Standards Enforcement (OLSE) reported that prevailing wage enforcement made up the majority of case resolutions for the ninth consecutive year. The office collected nearly $1.5 million in back wages and penalties in the San Francisco area alone.

Here are a few common mistakes contractors should avoid if they wish to avoid similar repercussions:

• Using federal wage rates instead of DIR rates: Many contractors mistakenly assume that federal Davis-Bacon rates satisfy California state requirements. While some projects have dual coverage, California’s prevailing wages are often higher, and the state updates them on a different cycle.
• Averaging hours across the week: California law requires daily overtime calculations. If a worker performs 10 hours of labor in a single standard eight-hour day, contractors must pay a 1.5x rate for the extra two hours, regardless of the weekly total. The law also requires contractors to pay workers double time for hours worked over 12 in a single day.
• Misclassifying workers: The DIR determines workers’ classifications by the task they perform on-site, not their job title. Contractors shouldn’t report the general laborer rate for specialized work like plumbing or carpentry. 
• Underpaying fringe benefits: Prevailing wage includes more than the base hourly rate.  Contractors must also pay the full fringe benefit package specified in the wage determination. Paying workers less than the required fringe amount, whether in benefits or cash in lieu, constitutes a prevailing wage violation.
• Using the wrong report format: California requires that contractors submit payroll records via DIR Form A-1-131 or a format containing identical data. The DIR doesn’t recognize standard payroll stubs or federal WH-347 Forms.

Penalties for certified payroll violations in California

The DIR maintains strict oversight for public works in California, and the consequences for failing to meet certified payroll standards are severe. Rather than asking for administrative fixes, the state uses a mix of financial penalties and operational restrictions to make sure contractors follow the rules. 

Here are a few examples:

• Financial penalties and liquidated damages: Contractors in California face a statutory penalty of up to $200 per day, per worker for failing to pay prevailing wages. Additionally, if they don’t provide certified payroll records within 10 days of a formal request, they trigger a penalty of $100 per worker, per day until they produce the records.
• Back wage payments to workers: If an audit reveals underpayment, the contractor is required to pay the full difference between the wages paid and the prevailing rate, including fringe benefits. These payments are often subject to 10% annual interest that accrues from the date the wages were originally due.
• Project payment withholding: If an LCP or the DIR finds substantial evidence of a violation, the awarding body can issue a Withholding of Contract Payments under Labor Code 1771.6. This allows the government to freeze the contractor’s progress payments before a formal hearing even happens, including enough to cover the suspected underpayment and all associated penalties.

Simplify certified payroll compliance with Miter.

Disconnected tools for time tracking, payroll, and compliance reporting create compounding data entry errors that trigger DIR audits and interest penalties. 

Miter eliminates these risks by tying jobsite hours directly to payroll in a single, unified platform. Miter Payroll automatically supports complex prevailing wage and fringe benefit calculations, ensuring contractors capture daily overtime and worker classifications accurately. Rather than spending hours manually formatting data, payroll teams can generate California-specific certified payroll reports instantly, matching the required XML schema for the DIR eCPR system. 

Miter also significantly reduces manual reporting work, freeing payroll teams to focus on job cost analysis and labor forecasting rather than manually reformatting data for the DIR every week. By automating the most difficult aspects of California payroll compliance, contractors increase their accuracy and protect their company from payment withholdings and penalties.