The short version
- Prevailing wage applies to California public works over $1,000 (Labor Code §1771).
- Contractors and subs must be registered with the DIR and submit certified payroll through the online eCPR system (SB 854).
- Records are kept for every workweek (§1776); they are furnished to the Labor Commissioner at least monthly under §1771.4, or more often if your contract says so, and many contracts say weekly.
- The money is held not for late work, but for a wrong wage determination, a short fringe, an apprentice-ratio miss, or a lapsed registration.
Why it isn't optional
Certified payroll is the record that proves the workers on a public-works project were paid the legally required rate. On California public works, that requirement is not optional and it is not forgiving: the awarding body can withhold contract payments until the records are complete and correct, and the Labor Commissioner can assess penalties on top.
When prevailing wage applies
Under Labor Code §1771, workers on public-works projects over $1,000 must be paid the general prevailing rate of per-diem wages for the craft and locality, as determined by the DIR director under §1773. "Public works" is broad: construction, alteration, demolition, installation, and repair work paid for in whole or part with public funds.
Registration and the eCPR system
Since SB 854 (2014), contractors and subcontractors that bid on or perform public work must be registered with the Department of Industrial Relations, and certified payroll records must be furnished to the Labor Commissioner electronically through the eCPR (electronic certified payroll reporting) portal. Registration has to be active for the entire period the work is performed. A registration that lapses mid-project is one of the most common, and most avoidable, reasons a filing is rejected.
What the record has to contain
Labor Code §1776 requires an accurate payroll record for each worker, each workweek, showing name, classification, hours, the rate paid, and the fringe benefit contributions made. The certification attests it is true. In practice, the entries that get contractors in trouble are:
- Wage determination. The rate is set by the determination in effect on the project's bid-advertisement date, for the correct craft and county. Using the wrong determination, or the wrong effective date, underpays workers on paper even when the check was right.
- Base plus fringe. The total must meet the required rate. Employer fringe contributions count, but they cannot be used to cover a shortfall in the base hourly rate.
- Overtime and classification. Prevailing-wage overtime rules and the correct craft classification both have to hold.
- Apprentices. Apprentices must be enrolled in an approved program and worked within the required ratio, with the DAS-140 and DAS-142 forms on file (the duties are Labor Code §1777.5; the forms and their deadlines are 8 CCR §230 and §230.1).
Deadlines: prepared weekly, submitted on the body's schedule
Payroll is prepared for each workweek under Labor Code §1776. How often those records must be furnished is a different question, and it is the one most sources get wrong. Labor Code §1771.4 sets the rule, and DIR states it plainly in its own eCPR FAQ: each contractor and subcontractor shall furnish the §1776 records directly to the Labor Commissioner “at least monthly or more frequently if specified in the contract with the awarding body”, in a format the Labor Commissioner prescribes.
So “weekly” is not the statutory floor: monthly is. Weekly is what a great many awarding bodies write into the contract, which is why weekly is what most contractors actually experience. The practical consequence matters both ways: read your own contract, because it, not the statute, is what sets your cadence. If it is silent, at least monthly is the requirement. If it says weekly, weekly is enforceable against you. Federally funded work carries its own weekly certified-payroll requirement (the WH-347) independently of the state rule.
Two more points from the same DIR FAQ that catch contractors out: submitting your CPRs to a union, to the prime, or to the awarding body does not satisfy the state requirement; eCPRs go directly to DIR. And projects monitored by the legacy Labor Compliance Programs of Caltrans, the City of Los Angeles, LAUSD and the County of Sacramento are exempt from the furnish-to-DIR requirement altogether. Three of those four operate in Los Angeles County.
What actually withholds the money
The penalty most contractors feel is not a fine. It is withheld progress payments: the awarding body holds funds until the certified payroll is complete and correct. On top of that, Labor Code §1775 allows penalties per worker, per day, for paying below the prevailing rate, plus the wage difference owed. Serious or repeated violations can lead to debarment from public work.
That is the case for checking every filing against the rules before it is submitted, rather than discovering the problem when a payment stops. It is the discipline our pre-flight gate is built around.
You will not catch most of these by reading the payroll. They show up months later, at audit, as money that never arrives.
Cited to the statute
Labor Code §1771Prevailing wage applies to public works over $1,000.SB 854 (2014)DIR contractor registration and electronic certified payroll (eCPR) reporting.Labor Code §1776Payroll record contents required for each worker, each workweek.Labor Code §1777.5Apprentice enrollment and ratio requirements on public works.Labor Code §1775Penalties per worker, per day, for paying below the prevailing rate.
This article is educational and does not constitute legal or tax advice. Statutes and agency requirements change; confirm current rules with the California DIR, the U.S. Department of Labor, the IRS, or qualified counsel before relying on them. Aeternus Dynamics is a compliance and advisory firm, not a law or accounting firm.