If you've searched "5551 vs 5552," you've probably seen both codes and gotten confused. Here's the clean explanation for California contractors, because using the wrong framework can lead to overpaying — or to an audit bill you didn't expect.
Most states rate workers' compensation through the National Council on Compensation Insurance (NCCI), and in NCCI states roofing is class code 5551. California is different. It runs its own rating bureau, the Workers' Compensation Insurance Rating Bureau (WCIRB), with its own classification system. In California, roofing is not 5551 — it's 5552 and 5553.
So the real "5551 vs 5552" answer for a California roofer is: 5551 is what you'd see out of state, and 5552 (with its higher-wage partner 5553) is what actually applies to your California payroll. If a policy or certificate shows 5551 for California operations, that's a red flag worth checking.
California uses dual-wage classifications for many construction trades, including roofing. Instead of one roofing code, there are two, split by an hourly wage threshold:
The logic: better-paid crews tend to be more experienced and better trained, so they generate fewer and less severe claims, which earns a lower rate. For 2026 the roofing threshold sits around $29 per hour (it rose from $27, and WCIRB reviews the threshold periodically — always confirm the current figure for your policy period).
| Code | Applies to | Relative rate |
|---|---|---|
| 5551 | Roofing in NCCI states (not California) | National equivalent |
| 5552 | California roofing payroll below the wage threshold | Higher |
| 5553 | California roofing payroll at/above the wage threshold | Lower |
Roofing is one of California's highest-rated workers' comp classes because falls are frequent and severe. Net rates commonly run in the $15–$40 per $100 of payroll range depending on the code, carrier, and your experience modification. Because 5552 rates higher than 5553, misclassifying a well-paid crew into 5552 can cost you thousands on the same payroll.
Example of the concept: on $200,000 of payroll, a rate difference of even $10 per $100 is $20,000. That's the size of mistake correct dual-wage classification prevents. This is why documentation matters.
You can't simply declare that your crew earns above the threshold — you have to prove it at audit. To assign payroll to 5553, you generally need:
If records don't support the higher-wage code at audit, the auditor moves that payroll back to 5552 at the higher rate, and you owe the difference. Clean, contemporaneous payroll records are the whole game.
For a California roofer, forget 5551 — it's the out-of-state code. Your money is in getting 5552 versus 5553 right, keeping wage documentation airtight, and tracking the annual threshold. Done well, correct classification is one of the few levers that meaningfully lowers roofing workers' comp without cutting a single corner on coverage.
For official classification and threshold details, see the WCIRB California classification search, and for workers' comp requirements the California DIR Division of Workers' Compensation.
Thrive Risk Management audits your roofing payroll classifications, splits 5552 and 5553 correctly, and makes sure you're not overpaying on your best-paid crews. Straight answers, driven by integrity.
Get a free quoteGeneral information only, not classification, legal, or coverage advice. Class codes, wage thresholds and rates change and vary by carrier and policy period. Confirm current WCIRB thresholds and your specific classifications with a licensed agent.