California Construction Dual-Wage Thresholds — 2026 Tracker
- Evan Swan
- 3 days ago
- 8 min read
Quick answer: California dual-wage thresholds effective September 1, 2026
All sixteen California construction dual-wage classifications get new hourly thresholds for policies incepting on or after September 1, 2026 — increases of $2 to $5 per hour. Roofing splits at $33.00: payroll for an employee at or above that goes to class code 5553, below it to 5552. Carpentry and steel framing move from $41 to $46. The three earthwork groups — excavation, sewer, and water/gas mains — move from $40 to $45. A 10.4% advisory pure premium increase takes effect the same day.
Source: WCIRB September 1, 2026 Regulatory Filing Quick Reference Guide and WCIRB classification search. Last verified August 4, 2026 by CPR Business Solutions.
First: which code in the pair is which
This trips up more people than the thresholds do, and getting it backwards puts payroll in the wrong code.
In the WCIRB's "A/B" pair notation, the first code is the LOW-wage code and the second is the HIGH-wage code — and the high-wage code is the cheaper one. So for roofing, written 5552/5553:
5553 is the high-wage code — "employees whose regular hourly wage equals or exceeds $33.00 per hour." Approved pure premium rate effective 9/1/2026: $12.112 per $100 of payroll.
5552 is the low-wage code — where payroll goes when the wage is not shown to reach the threshold. Approved pure premium rate: $20.827 per $100 of payroll.
That is a $8.715 per $100 spread on identical work — roughly 72% more for the low-wage code. On $390,000 of roofing payroll that is about $34,000 a year of pure premium difference before any experience mod is applied. The spread is why threshold changes matter so much more in California than the two-dollar move suggests.
Note also that the pair order is semantic, not numeric — electrical wiring is written 5190/5140, where 5190 is the low-wage code and 5140 the high-wage one. Don't assume the smaller number comes first.
The full table — every classification and sub-classification
Most published tables show sixteen rows. The WCIRB filing actually breaks several of these into sub-classifications with their own phraseology, which matters because the sub-class is what appears on the policy. Format: trade — low-wage code / high-wage code — current threshold → threshold effective 9/1/2026.
Increases of $5.00
Carpentry — 5403 / 5432 — $41 → $46
Steel framing — 5632 / 5633 — $41 → $46
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 or connections construction — 6315(1) / 6316(1) — $40 → $45
Gas mains or connections construction — 6315(2) / 6316(2) — $40 → $45
Increases of $4.00
Wallboard installation — 5446 / 5447 — $41 → $45
Glaziers — 5467 / 5470 — $39 → $43
Plastering or stucco work — 5484 / 5485 — $38 → $42
Electrical wiring — 5190 / 5140 — $36 → $40
Painting or wallpaper installation — 5474(1) / 5482(1) — $32 → $36
Waterproofing — 5474(2) / 5482(2) — $32 → $36
Painting — water, oil or gasoline storage tanks — 5474(3) / 5482(3) — $32 → $36
Sheet metal work — 5538(1) / 5542(1) — $33 → $37
Heating or air conditioning ductwork — 5538(2) / 5542(2) — $33 → $37
Increases of $3.00
Automatic sprinkler installation — 5185 / 5186 — $33 → $36
Concrete or cement work — sidewalks, driveways, patios, curbs, gutters — 5201(1) / 5205(1) — $33 → $36
Concrete or cement work — floor slabs and slab-type foundations — 5201(2) / 5205(2) — $33 → $36
Plumbing — 5183(1) / 5187(1) — $32 → $35
Refrigeration equipment — 5183(2) / 5187(2) — $32 → $35
Heating or air conditioning equipment — 5183(3) / 5187(3) — $32 → $35
Increases of $2.00
Masonry — 5027 / 5028 — $35 → $37
Roofing — 5552 / 5553 — $31 → $33
A note on the earthwork classes, because it affects real quotes: several widely-circulated broker summaries still show excavation, sewer and water/gas mains as "TBD" or "under review" with no approved figure. Those tables were published while the filing was pending and have not been updated. The WCIRB's own Quick Reference Guide lists all three at $45, approved by the Insurance Commissioner effective September 1, 2026. If you are quoting a 6218, 6307 or 6315 account off a table that says TBD, you are quoting off stale data.
How dual-wage classification actually works
California is the only state that splits construction classes by employee wage. For each of these trades there are two class codes covering identical work: a lower-rated code for employees at or above the hourly threshold, and a higher-rated code for employees below it. The theory is that better-paid crews are more experienced and get hurt less; the practice is that payroll for the same crew on the same job can land in two different codes.
Three mechanics catch contractors out every year:
It's a cliff, not a slope. At a $33.00 roofing threshold, an employee at $32.99 is entirely low-wage payroll and an employee at $33.00 is entirely high-wage payroll. There is no blending and no proration.
It applies employee by employee. Not to the crew, not to the company, not to an average. Each individual's regular hourly wage determines which code their payroll goes to.
"Regular hourly wage" is a defined term. Overtime premium, bonuses and per-diem generally don't count toward it the way contractors assume. The classification is also verified at final audit, so a crew the owner is certain sits above the threshold can be reallocated once the calculation is done to the plan's definition.
Check the sub-classification, not just the trade. A contractor doing both plumbing and HVAC ductwork is in 5183(1) and 5538(2) — different codes, different thresholds ($35 and $37 from 9/1). Reporting both to one code is a common and expensive audit finding.
The raise-versus-reclassify calculation
This is the practical decision every affected contractor faces before their next renewal, and it is worth running rather than guessing.
When a threshold rises, employees earning between the old and new figures move from the cheaper code into the more expensive one with no change in the work performed. A carpenter at $43.00/hr was high-wage under the $41.00 threshold; from September 1 they are low-wage under the $46.00 threshold. Nothing about the risk changed — only the classification.
The question is whether raising that employee to the new threshold costs less than the reclassification. Work it per employee:
Find the annual hours for each employee sitting between the old and new threshold.
Cost of the raise = (new threshold − current wage) × annual hours, plus the payroll-tax and benefit load on that increase.
Cost of reclassification = that employee's annual payroll ÷ 100, × the rate difference between the two class codes, × the experience mod.
Compare. On a high mod the reclassification cost is multiplied, which is what makes the raise pencil out more often than contractors expect.
That last point is the one most people miss. The experience modification multiplies the reclassification cost but not the wage cost. The higher the mod, the more lopsided it gets — which means the contractors with the worst mods have the most to gain from running this calculation, and are the least likely to have run it.
Worked on roofing, using the WCIRB's own approved pure premium rates: six crew at $32.50/hr and 2,000 hours each is $390,000 of payroll. Raising all six to $33.00 costs about $6,000 in wages, or roughly $7,200 with tax and benefit load. Letting the payroll reclassify from 5553 to 5552 costs $390,000 ÷ 100 × $8.715 × the mod — about $34,000 at a 1.00 mod and $56,000 at 1.65. The raise is not a close call. Carrier filed rates include expense loading and will exceed pure premium, so treat those figures as a floor.
Two other September 1 changes that hit the same renewal
Don't model the threshold change in isolation. Two other things land the same day.
A 10.4% advisory pure premium increase. Approved by the Insurance Commissioner, effective September 1, 2026 — an average of $1.65 per $100 of payroll statewide. It is the largest increase in more than a decade and the second consecutive one, driven by cumulative trauma claim frequency, medical costs and allocated loss adjustment expense. For a contractor with employees crossing a threshold, the two changes compound: more payroll lands in the higher-rated code, and rates moved.
Experience Rating Plan amendments. The eligibility threshold rises from $10,800 to $11,700, and the Expected Loss Rate and Primary Threshold tables were both updated. We cover what that does to your mod in the September 1 experience rating changes.
California also layers a stack of statutory assessments on top of the carrier rate, which we break down in our guide to California's DIR surcharges. Price the all-in cost, not the manual premium.
Why the audit exposure is worse than it looks
Dual-wage misreporting is the most common and most expensive California construction audit finding. Two things make it dangerous.
First, the WCIRB's phraseology puts the burden of proof on the employer: assignment of a high-wage classification is "subject to verification at the time of final audit," and payroll not shown to meet the threshold is assigned to the low-wage code by default. Incomplete wage records don't produce a neutral outcome — they produce the expensive one.
Second, for roofing there is no escaping the audit. Under California Insurance Code Section 11665, every policy insuring the holder of a C-39 roofing license must receive a physical audit of the complete policy period regardless of premium size. Other classes are audited by exception; roofing is audited every time, and the 5552/5553 split is exactly what the auditor is looking at. Our roofing workers' comp guide covers that rule in full, and the audit disputes handbook covers the dispute path when an audit comes back wrong.
What to do before your next renewal
Pull a wage report and list every employee within $5.00 of their trade's new threshold. Those are the ones that move.
Confirm which sub-classification each crew actually falls in — the thresholds differ within a trade.
Recalculate regular hourly wage to the reporting plan's definition — not the number on the offer letter — and keep the records that prove it.
Run the raise-versus-reclassify math above for each of them.
Fix the payroll reporting split at inception rather than letting the audit do it retroactively.
Model the 10.4% pure premium increase into the renewal budget at the same time.
Maintenance note
This page is maintained against the WCIRB's own filing documents and classification search, not secondary summaries. We update it whenever a threshold moves.
August 4, 2026 (second revision) — corrected the pair-order labelling. In the WCIRB's "A/B" notation the first code is the low-wage code, not the high-wage code; an earlier version of this page had that reversed. Added the approved pure premium rates for 5552 and 5553 and a worked cost example built on them.
August 4, 2026 (revised) — corrected against the WCIRB Regulatory Filing Quick Reference Guide. All three earthwork groups confirmed approved at $45; an earlier version repeated the "under review" status still shown in several secondary sources. Full sub-classification detail added.
August 4, 2026 — published.
Placing California construction accounts
CPR Business Solutions is a wholesale workers' compensation MGA placing hard-to-write California construction accounts since 2021 — high experience mods, hazardous class codes, PEO co-employment, and accounts coming out of State Fund or the assigned risk pool. If a threshold change is about to reprice a renewal, or an audit has already reallocated payroll across the dual-wage line, we can work both problems.
Submit an account at proposals@cprbrokers.com or call (704) 256-5945.
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