SB 555 revises Section 4453 of the California Labor Code that sets minimum and maximum average weekly earnings used to calculate temporary disability, permanent total disability, and permanent partial disability benefits. The bill codifies an annual adjustment mechanism for certain permanent partial disability limits: commencing January 1, 2026, the min/max specified for 2014 are adjusted each January 1 by the Social Security cost‑of‑living adjustment (COLA) based on the U.S. Consumer Price Index.
It leaves new numeric minimum and maximum fields blank for injuries on or after January 1, 2027, creating an unresolved gap for that date.
At a Glance
What It Does
The bill requires that the permanent partial disability weekly‑limit established for 2014 be increased annually beginning January 1, 2026 by the Social Security Administration’s COLA (based on CPI). It preserves the existing rule that for some temporary and permanent total disability limits the cap is the greater of a fixed dollar amount or a multiple of the state average weekly wage, with annual increases tied to changes in the state AWW.
Who It Affects
Workers receiving permanent partial disability benefits, claims administrators, insurers writing California workers’ compensation, employers whose premiums reflect benefit levels, and the Department of Industrial Relations (which will need to apply and publish adjusted limits).
Why It Matters
The change introduces an explicit CPI‑based indexing method for a major class of benefit limits, shifting future benefit escalations onto an automatic formula rather than legislative action. At the same time, the unfilled 2027 minimum/maximum creates legal and administrative uncertainty for injuries on or after January 1, 2027.
More articles like this one.
A weekly email with all the latest developments on this topic.
What This Bill Actually Does
Section 4453 currently lists a sequence of historical dollar floors and ceilings used to calculate average weekly earnings for different workers’ compensation indemnities. SB 555 keeps the multi‑tiered structure but adds two notable features.
First, it instructs that the permanent partial disability limits that were set at $240 to $435 for injuries occurring on or after January 1, 2014, will be adjusted each January 1 beginning in 2026 by the Social Security cost‑of‑living adjustment, using the SSA’s CPI‑based change for that year. Second, the bill inserts a new line for injuries on or after January 1, 2027 that provides a minimum and maximum but leaves those dollar amounts blank in the text, meaning the statutory placeholders exist but the numeric values are not specified.
For temporary disability and permanent total disability, SB 555 leaves intact the existing mechanism adopted in earlier paragraphs: starting January 1, 2006 the floor remains $189 and the cap is whichever is greater of $1,260 or 1.5 times the state average weekly wage, and then each January 1 thereafter those limits increase by the percentage change in the state average weekly wage from the prior year. The bill preserves the long‑standing computation rules for average weekly earnings—how to aggregate pay from multiple employers, treat irregular or piecework earnings, and calculate weekly earnings for part‑time work—and it keeps the principle that benefits are calculated under the limits in effect on the date of injury and remain fixed for the duration of that disability.Operationally, the bill shifts one indexary responsibility to the Social Security Administration’s COLA series while leaving another tied to California’s state average weekly wage (AWW).
That creates two separate automatic escalation paths within the same statute: a CPI‑based COLA for the permanent partial band and an AWW percentage for the temporary/permanent total band. Because the law fixes benefits at the limits in effect on the date of injury, insurers and employers will need to apply the specific indexed amount that corresponds to the injury date, and adjust reserving and premium assumptions accordingly.
The blank 2027 numeric placeholders, however, introduce ambiguity for injuries on or after January 1, 2027 about which limits apply unless the missing figures are filled by separate legislation or administrative guidance.
The Five Things You Need to Know
The bill requires annual adjustments to the 2014 permanent partial disability limits ($240–$435) beginning January 1, 2026, using the Social Security COLA based on the U.S. Consumer Price Index.
For temporary and permanent total disability caps, the statute continues to use 1.5 times the state average weekly wage (or a fixed dollar cap), with yearly increases each January 1 equal to the percentage change in the state AWW.
Section 4453(c) computation rules for average weekly earnings—aggregation across employers, treatment of irregular pay, and calculation for part‑time work—remain in force and govern how the adjusted limits are applied.
The bill adds a provision for injuries occurring on or after January 1, 2027 that specifies a minimum and maximum but leaves those dollar amounts blank in the text, producing an unresolved statutory gap.
Disability benefits remain fixed according to the limits in effect on the date of injury and continue for the duration of the disability, so the indexing affects only injuries with dates on or after the applicable adjustment.
Section-by-Section Breakdown
Every bill we cover gets an analysis of its key sections.
Temporary and permanent total disability floors and caps; state AWW indexing
This subdivision lists historical dollar floors and caps for temporary disability and permanent total disability and preserves the post‑2006 rule: the floor is $189 and the cap is the greater of $1,260 or 1.5 times the state average weekly wage for injuries on or after January 1, 2006, with annual January 1 increases equal to the percentage change in the state AWW. Practically, that requires referencing the Department of Labor’s reported California AWW for the 12 months ending March 31 of the prior calendar year to compute each year’s adjustment and then applying the resulting percentages to the statutory limits when determining benefits for injuries occurring that year.
Permanent partial disability bands and new COLA trigger
Subdivision (b) preserves the graduated min/max bands keyed to the employee’s final adjusted permanent disability rating and then sets a uniform $240–$435 band for injuries on or after January 1, 2013. Critically, for injuries on or after January 1, 2014 the bill makes the $240–$435 band the baseline and, starting January 1, 2026, requires annual adjustments by the Social Security Administration’s COLA; the SSA’s published adjustment (based on CPI changes) will be applied to the previous year’s amount in the same manner Social Security uses. This creates an automatic, CPI‑based escalation path for permanent partial limits rather than relying on ad hoc legislative updates.
2027 placeholder
The bill inserts a new clause setting benefits ‘for injuries occurring on or after January 1, 2027’ but leaves the minimum and maximum dollar fields blank. That drafting choice produces immediate ambiguity because the statute, as written, contains an entry without numeric values. Unless the Legislature fills those blanks or an administrative mechanism is adopted, parties and adjudicators will face uncertainty over which limits apply to injuries on or after that date.
How to compute average weekly earnings
This subdivision specifies the mechanics for calculating average weekly earnings used to apply the statutory floors/ceilings: full‑time weekly pay equals working days times daily earnings; multiple employments are aggregated but non‑injury employment rates cannot exceed the hourly rate at injury; irregular, piecework or commission pay is averaged over a convenient period up to one year; and for employment under 30 hours/week the average weekly earning capacity is used with consideration of all income sources. These rules ensure the indexed limits are applied to a properly computed weekly‑earnings figure rather than mechanically to gross wages.
Temporal application and grandfathering
Subdivision (d) reiterates that computations reference temporary disability or permanent disability from original injuries after January 1, 1990, preserves existing rights, and fixes indemnity benefits according to limits in effect on the date of injury for the duration of disability. This temporal rule has operational importance: indexing changes affect only new injuries on or after the effective dates, so carriers must segregate reserves and adjust underwriting assumptions by injury‑date cohorts.
This bill is one of many.
Codify tracks hundreds of bills on Employment across all five countries.
Explore Employment in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- Workers with permanent partial disabilities occurring on or after January 1, 2014 — the COLA linkage preserves purchasing power of the statutory minimum and maximum over time, protecting benefits against inflation.
- Injured workers whose temporary or permanent total disability benefits reference the state AWW — since those caps increase with the AWW, benefits are more responsive to statewide wage growth.
- Policyholders and plan designers who value predictability — automatic indexing removes the need for frequent legislative changes to maintain real benefit levels (for the indexed categories).
Who Bears the Cost
- Insurers writing California workers’ compensation — automatic annual increases raise future benefit payments, requiring higher reserves and potential premium adjustments.
- Employers (especially self‑insured entities) — premium rates and self‑insurance liabilities will reflect indexed increases, increasing labor costs for some employers.
- Claims administrators and the Department of Industrial Relations — they must implement new calculation protocols, publish adjusted limits annually, and address the legal uncertainty created by the blank 2027 figures.
- Actuaries and underwriters — must model two different indexing regimes (AWW‑based and CPI‑based) for the same statute, complicating forecasting and pricing.
Key Issues
The Core Tension
The bill balances the legitimate goal of preserving benefit value (by indexing limits automatically) against the competing interest in predictable, administrable cost structures for insurers and employers; indexing protects claimants from inflation but transfers recurring fiscal obligations to payers and creates technical and legal complexity—especially where the statute leaves numeric values undefined for a future date.
SB 555 creates two separate automatic escalation paths inside the same subsection of the statute: one tied to the California state average weekly wage (AWW) and one tied to the Social Security CPI‑based COLA. Those indices move differently over time—AWW reflects local wage trends while the SSA COLA reflects national consumer price inflation—so the statutory bands can diverge, producing distributional consequences across claim types and disability ratings.
That mismatch complicates actuarial modeling because temporary/permanent total benefits will climb with wages while permanent partial benefits will climb with CPI, potentially advantaging some cohorts of injured workers relative to others.
The blank placeholders for 2027 introduce a discrete legal and operational problem. A statute that contains a clause without numeric values leaves adjudicators and claims handlers to decide whether to apply the prior indexed amount, some administrative estimate, or to treat the band as undefined until remedied.
Absent follow‑up legislation or authoritative administrative guidance, that gap is likely to generate coverage disputes, petitions for clarification at the Workers’ Compensation Appeals Board, and pressure on the Legislature or DIR to act quickly. Finally, automatic indexing shifts the long‑term fiscal exposure from periodic legislative adjustments to an ongoing actuarial obligation; that improves benefit predictability but reduces legislative control over aggregate workers’ compensation costs.
Try it yourself.
Ask a question in plain English, or pick a topic below. Results in seconds.