“I have more than one injury.”

The three combinations

Two specific injuries — two events, two dates, two claims. Potentially different employers, different carriers, different policy years.

A specific injurySpecific injury One identifiable event on one date. plus a cumulative traumaCT — Cumulative trauma Injury from repeated exposure over time. The largest injury category in California and the least claimed. — very common, and frequently under-claimed because the cumulative claim is invisible. Its date of injuryDate of injury For a cumulative or occupational disease claim, the law sets it as when you first suffered disability and knew or should have known it was work-related — not when the wear began. Almost every deadline runs off this. is when you first suffered disability and knew, or should have known, it was work-related. How.

One injury with a compensable consequenceCompensable consequence A new problem caused by the original injury or its treatment. Overusing the other side, the joint above or below, a surgical complication. — the other side, the joint above or below, a surgical complication, CRPS. That is part of the original claim, not a new one. More.

Why the characterization matters

Who pays. Different employers and carriers may be on different claims.

Which deadlines apply. Each claim has its own.

And how the ratings combine. Multiple impairments are combined using the Combined Values Chart, not simply added — which is why two 30% impairments do not make 60%.

The combining question is genuinely contested at the margins, and Vigil v. County of Kern (2024, WCABWCAB Workers’ Compensation Appeals Board. The court system that decides these cases. 23 district offices statewide. en banc) addressed it. How multiple impairments are combined can materially change the final percentage. How ratings are built.

What the defense will do

Argue that the disability belongs to the other claim — whichever one they are not defending.

Two rules shape that argument:

The law conclusively presumes a prior award of permanent disabilityPD Permanent Disability. Compensation for lasting impairment. A different and much lower weekly rate — 2026 maximum $290/week. still exists — but that requires an actual award, not a Compromise and ReleaseC&R — Compromise and Release A lump sum that closes future medical treatment permanently. without one.

And note Lindh cuts the other way — it permits apportionmentApportionment Dividing permanent disability between industrial and non-industrial causes. It is to disability, not to findings on an image. to a condition that never disabled anyone. The defense still has to prove, with substantial medical evidence, that the earlier injury causes part of this disability. How.

And the one that adds money

If one of the disabilities is pre-existing, SIBTFSIBTF Subsequent Injuries Benefits Trust Fund. Pays where a pre-existing disability plus an industrial injury produce a substantially greater disability. Rewritten by SB 171 in July 2026. may apply — a state fund that pays where a pre-existing disability plus an industrial injury produce a substantially greater combined disability.

It is paid by a fund, not by your employer — genuinely additional money — and it is chronically under-claimed. SB 171 rewrote it effective July 2026, retroactively, with a June 1, 2026 grandfather snapshot. What changed.