California’s biggest workers’ compensation development entering 2027 is the 2026 overhaul of the Subsequent Injuries Benefits Trust Fund (SIBTF). Injured workers should also distinguish enacted law from proposals that did not pass.
Confirmed: SB 171 Reshaped SIBTF Claims
SB 171, Chapter 83 of the Statutes of 2026, took effect immediately on July 13, 2026 and amended Labor Code section 4751 and related provisions. SIBTF can provide additional compensation when a worker had a qualifying preexisting disability or impairment, suffers a later compensable industrial injury, and meets demanding combined-disability rules.
Under the amended statute:
- The preexisting and subsequent disabilities must combine to at least 70 percent permanent disability.
- The later injury must generally produce either at least 5 percent whole-person impairment involving an opposite hand, arm, foot, leg, or eye, or at least 35 percent whole-person impairment considered alone after apportionment.
- A later industrial injury that itself results in 100 percent permanent total disability does not support additional SIBTF compensation.
- A worker who already received an SIBTF award based on 100 percent combined permanent disability cannot apply again for another SIBTF award.
- SIBTF payments must begin within 30 days after a final determination of liability, subject to statutory reductions.
Prior medical records, work restrictions, earnings evidence, and proof of how an earlier condition affected work or daily activities can be decisive. Workers with potential SIBTF claims should preserve those records now rather than trying to reconstruct them years later. Read the current Labor Code SIBTF provisions.
AB 1576 Did Not Become Law
AB 1576 proposed additional SIBTF rules for injuries on or after January 1, 2027, including a five-year or later WCAB-based filing deadline and a specialized QME database. The bill was held under submission in the Senate Appropriations Committee on August 13, 2026. As of September 17, it is not law and should not be described as a 2027 entitlement or deadline.
2027 Temporary-Disability Rates Are Still Forthcoming
California adjusts minimum and maximum temporary total disability (TTD) rates using the State Average Weekly Wage. As of this update, DWC has not announced the official 2027 minimum and maximum. Do not rely on an estimated rate; check the Division of Workers’ Compensation after the annual announcement.
Life-pension and permanent-total-disability payments for qualifying dates of injury may also receive the statutory SAWW adjustment.
What Injured Workers Should Do
- Report a job injury promptly and ask for a DWC-1 claim form.
- Keep copies of work-status notes, medical reports, mileage, pay records, and every insurer notice.
- Identify prior injuries, illnesses, disabilities, accommodations, and work restrictions that may matter to apportionment or SIBTF.
- Do not assume a claim is limited to the date written on the initial form; cumulative-trauma and occupational-disease rules can differ.
See our guide on filing a California workers’ compensation claim. Contact Jonny Law for advice about your injury, benefits, or SIBTF eligibility. This page is general information, not legal advice.
