California Workers’ Comp Changes for Contractors in 2026
California contractors with workers’ compensation policies beginning or renewing on or after September 1, 2026, should prepare for two important changes:
- California’s average advisory pure premium rate is increasing.
- Hourly wage thresholds are rising for many dual-wage construction classifications.
These changes will not affect every contractor in the same way. However, certain plumbing, HVAC, electrical, roofing, painting, carpentry and excavation contractors could experience meaningful premium increases even if their payroll and claims history have not changed.
California’s Workers’ Comp Benchmark Is Increasing 6.6%
The California Insurance Commissioner adopted an average advisory pure premium rate of $1.65 per $100 of payroll, effective September 1, 2026. That is 6.6% higher than the average rate approved for 2025, although it is below the 10.4% increase originally requested by the Workers’ Compensation Insurance Rating Bureau of California.
The increase reflects several pressures within California’s workers’ compensation system, including:
- Higher medical costs
- Increasing cumulative-trauma claim frequency
- Higher expenses associated with adjusting and managing claims
It is important to understand that this does not mean every contractor’s workers’ compensation premium will automatically increase by 6.6%.
California’s pure premium rates are advisory benchmarks. Individual insurance companies establish their own rates, and a contractor’s actual premium will also depend on factors such as:
- Employee classifications
- Estimated payroll
- Claims history
- Experience modification, or X-Mod
- Carrier pricing and underwriting appetite
- Schedule credits or debits
- Changes in operations
The statewide increase nevertheless gives insurance carriers additional actuarial support for firmer pricing, particularly in construction classes with significant injury exposure or unfavorable loss trends.
Dual-Wage Thresholds Are Also Increasing
California uses dual-wage classifications for many construction trades. Employees who earn at or above a designated hourly threshold may qualify for a higher-wage classification that generally carries a lower workers’ compensation rate.
Employees paid below the threshold are assigned to the corresponding lower-wage classification, which can be considerably more expensive.
Beginning September 1, 2026, many of these thresholds will increase:
| Construction trade | Current threshold | New threshold |
|---|---|---|
| Plumbing, refrigeration and HVAC equipment | $32 | $35 |
| Electrical wiring | $36 | $40 |
| Automatic sprinkler installation | $33 | $36 |
| Concrete or cement work | $33 | $36 |
| Carpentry | $41 | $46 |
| Painting and waterproofing | $32 | $36 |
| Roofing | $31 | $33 |
| Excavation, grading and land leveling | $40 | $45 |
| Steel framing | $41 | $46 |
| HVAC ductwork and sheet metal | $33 | $37 |
The classification details matter. For example, HVAC equipment work generally falls within the $35 threshold, while qualifying HVAC ductwork or sheet-metal operations may be subject to the separate $37 threshold.
Contractors should review the exact classifications appearing on their policies instead of relying only on a general trade description.
How the New Threshold Can Increase Premium
Consider a carpenter earning $43 per hour.
Under the existing $41 threshold, that employee may qualify for the higher-wage carpentry classification. For a workers’ compensation policy effective September 1, 2026, the threshold increases to $46. If the employee continues earning $43 per hour, that employee’s payroll may move into the more expensive lower-wage classification.
Nothing changed about the employee’s job. The contractor did not add payroll or have a new claim. Nevertheless, the classification change alone could produce a substantial premium increase.
This is why contractors should not evaluate their renewal based only on the carrier’s overall rate change.
Should Contractors Increase Employee Wages?
For employees sitting just below a new threshold, it may be worth comparing the cost of a wage increase with the potential workers’ compensation savings associated with the higher-wage classification.
That does not mean every contractor should automatically increase wages to meet the threshold. The calculation should consider:
- The difference between the applicable class rates
- The employee’s annual hours
- The contractor’s X-Mod
- Payroll taxes and other wage-related costs
- The carrier’s actual filed rates
- Whether the employee consistently meets the wage requirement
- Payroll and timekeeping documentation
A legitimate wage adjustment can sometimes reduce the contractor’s total employment cost, but the numbers should be calculated before making a decision.
Documentation Will Be Critical at Audit
Contractors using dual-wage classifications must be able to support the division of payroll during the insurance company’s final audit.
Before renewal, contractors should make sure their payroll records clearly identify:
- Each employee
- Hours worked
- Hourly wage
- Type of work performed
- Applicable construction classification
- Overtime and other compensation
- Work divided among different trades or operations
Reporting only total company payroll may not be sufficient to support the higher-wage classification. Incomplete records can result in payroll being reassigned to the more expensive classification during an audit.
The X-Mod Eligibility Threshold Is Changing Too
California’s experience-rating eligibility threshold will increase from $10,800 to $11,700 in qualifying premium beginning September 1, 2026.
This means some smaller contractors may move into or out of experience rating depending on their qualifying premium. Contractors already subject to an X-Mod should also review open claims and loss information well before renewal, since incorrect reserves or claim data can affect their modification and overall premium.
What California Contractors Should Do Now
Contractors with September 2026 or later renewals should begin reviewing their workers’ compensation program early.
Recommended steps include:
- Obtain payroll by employee, hourly wage and trade.
- Identify employees who fall between the current and new wage thresholds.
- Confirm that the policy uses the correct construction classifications.
- Review open claims and current loss runs.
- Estimate the effect of the new thresholds before the carrier issues the renewal.
- Compare multiple carriers when pricing or underwriting appetite changes materially.
- Maintain complete payroll and timekeeping records for the final audit.
Waiting until the renewal proposal arrives may leave too little time to correct classifications, address claim issues or evaluate alternative carriers.
Prepare Before Your Next Renewal
The September 1 changes do not guarantee that every California contractor’s workers’ compensation premium will increase. They do, however, create multiple ways for premiums to move higher.
For contractors subject to dual-wage classifications, the new wage thresholds may have an even greater impact than the statewide advisory rate increase.
Contractor Insurance Pro helps California contractors review classifications, payroll reporting, X-Mods and available carrier options before renewal. If your workers’ compensation policy renews on or after September 1, 2026, contact us for a contractor-specific coverage and premium review.
This article is for general informational purposes and does not constitute legal, payroll or insurance coverage advice. Classification and rating decisions depend on the contractor’s operations, records, policy terms and insurance carrier.
Sources: California Department of Insurance rate announcement and WCIRB September 1, 2026 regulatory guide.
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