If you are a California contractor, the wage thresholds that determine your workers’ compensation classification all increased on September 1, 2026 — and if your crews sit near the line, your rate may go up on renewal without anything about your business changing.
Here is how the system works and what the new numbers mean for you.
Two Codes for the Same Trade
California is unusual. In most construction trades, the state’s classification system splits identical work into two separate classification codes — one for lower-wage crews and one for higher-wage crews. Same trade. Same tools. Same job site. Two different rates.
And the direction surprises people. The low-wage code carries the higher rate.
Why Lower Wages Cost More
The logic is actuarial, not moral. Premium is calculated per $100 of payroll. A crew earning $28 an hour generates roughly half the payroll of a crew earning $56 an hour doing the same work over the same hours — but not half the injuries. Claim frequency does not scale down with wages, and medical costs and indemnity benefits do not either.
So to collect adequate premium from lower-wage operations, the rate per $100 has to be higher. Higher-wage operations spread the same expected losses across a larger payroll base, which produces a lower rate.
There is a secondary effect as well. Higher-wage crews tend to be more experienced, more likely to be journeyman-level, and to work for contractors with more established safety practices. The data reflects that.
Every Construction Threshold Increased on September 1, 2026
There is no single statewide figure. Each dual wage classification carries its own hourly threshold, and those figures are adjusted through the regulatory filing process. Effective September 1, 2026, all twenty-two construction dual wage thresholds went up.
| Trade | Low / high wage codes | Old threshold | From 9/1/2026 |
|---|---|---|---|
| Carpentry | 5403 / 5432 | $41 | $46 |
| Steel framing | 5632 / 5633 | $41 | $46 |
| Wallboard installation | 5446 / 5447 | $41 | $45 |
| Excavation | 6218(1) / 6220(1) | $40 | $45 |
| Grading land | 6218(2) / 6220(2) | $40 | $45 |
| Land leveling | 6218(3) / 6220(3) | $40 | $45 |
| Sewer construction | 6307 / 6308 | $40 | $45 |
| Water mains | 6315(1) / 6316(1) | $40 | $45 |
| Gas mains | 6315(2) / 6316(2) | $40 | $45 |
| Glaziers | 5467 / 5470 | $39 | $43 |
| Plastering or stucco | 5484 / 5485 | $38 | $42 |
| Electrical wiring | 5190 / 5140 | $36 | $40 |
| Masonry | 5027 / 5028 | $35 | $37 |
| Automatic sprinkler installation | 5185 / 5186 | $33 | $36 |
| Concrete or cement work — flatwork | 5201(1) / 5205(1) | $33 | $36 |
| Concrete or cement work — slabs | 5201(2) / 5205(2) | $33 | $36 |
| Sheet metal work | 5538(1) / 5542(1) | $33 | $37 |
| Heating or A/C ductwork | 5538(2) / 5542(2) | $33 | $37 |
| Plumbing | 5183(1) / 5187(1) | $32 | $35 |
| Refrigeration equipment | 5183(2) / 5187(2) | $32 | $35 |
| Heating or A/C equipment | 5183(3) / 5187(3) | $32 | $35 |
| Painting or wallpaper | 5474(1) / 5482(1) | $32 | $36 |
| Waterproofing | 5474(2) / 5482(2) | $32 | $36 |
| Painting — storage tanks | 5474(3) / 5482(3) | $32 | $36 |
| Roofing | 5552 / 5553 | $31 | $33 |
Source: WCIRB September 1, 2026 Regulatory Filing Quick Reference Guide. The new thresholds apply to policies effective on or after September 1, 2026.
Why This Increase Matters More Than It Looks
Read the carpentry line again. The threshold moved from $41 to $46 — a five dollar jump.
A carpentry crew averaging $43 an hour qualified for 5432, the high-wage classification, on a policy written last year. That same crew, at that same wage, now falls under 5403 — the low-wage code, with the higher rate.
Nothing about the business changed. No new claims, no new operations, no wage cut. The line moved, and the contractor ended up on the wrong side of it.
Steel framing moved the same five dollars. Wallboard, excavation, grading, sewer, and water and gas mains all moved by four or five. Glaziers and plastering moved four.
This is going to catch a lot of California contractors on renewals written after September 1, and most will not be told why their rate went up.
Note How Wide the Range Is
Roofing sits at $33. Carpentry and steel framing sit at $46. That is a thirteen dollar spread between trades.
If you run multiple trades — and most general contractors do — you are managing several different thresholds simultaneously. A wage that comfortably clears the roofing line falls well short of the carpentry line. There is no single number to aim at.
Documentation Decides It, Not Your Payroll Average
Here is the part that costs contractors real money.
Qualifying for the high-wage classification is not automatic because your wages are high. You have to prove it, employee by employee, with records the auditor accepts. If the documentation is not there at audit, the default is the low-wage classification — the more expensive one.
We have seen contractors who genuinely paid above the threshold get assigned to the low-wage code and receive a substantial audit bill, purely because their payroll records did not separate regular hours from overtime correctly, or did not tie hours to individual employees by classification.
What auditors generally want: hours worked per employee, wages paid per employee, and a clean tie between the two, maintained as you go rather than reconstructed afterward. Certified payroll on public works jobs helps considerably.
What To Do Before Your Next Renewal
Find your trades in the table. If your average wage sits within a few dollars of a threshold, you have a decision to make.
Run the math on a raise. If a crew sits just below the line, the premium difference between the two codes can exceed the cost of the wage increase that would clear it. That calculation is worth doing before you assume you cannot afford it.
Check your records, not just your wages. Paying above the threshold without documentation to prove it gets you the cost and none of the benefit.
Look at mixed crews carefully. If some employees qualify and others do not, the allocation has to be right and it has to be defensible.
If You Think You Are in the Wrong Code
Classification disputes are resolvable. If you are assigned to a low-wage code and your records show you qualified for the high-wage code, that can often be corrected — sometimes retroactively, depending on the circumstances.
It is worth pursuing because the effect compounds. A wrong classification does not just inflate this year’s premium. It flows into your payroll base and affects your experience modification, which then affects future years.
Final Thoughts
The dual wage system is the single largest driver of premium variation between California contractors doing identical work. It is also one of the least explained, and it just changed for every trade.
If nobody has walked you through which threshold applies to your operations, whether your payroll records would survive an audit, and whether a modest wage adjustment would move you into a lower-rated classification, have that conversation before your renewal is marketed — not after the quote arrives.
Not sure which classification you should be in?
Send us your current declarations page, your classification split, and a recent payroll summary. We will tell you which dual wage codes apply, whether your documentation supports the assignment, and what a correction would be worth.
Call (888) 590-2667 or email info@goldbridgeins.com.
Goldbridge Insurance Services · 15840 Ventura Blvd, Suite 203, Encino, CA 91436
