SIBTF is a California state fund created under Labor Code §4751 that pays additional disability benefits to workers whose total disability is significantly worse because of a pre-existing condition. It pays the gap between what workers’ comp covered and the worker’s actual combined disability — typically as a monthly check for life.

You may qualify if you had a pre-existing permanent partial disability or health condition, suffered a subsequent California work injury that caused additional permanent disability of at least 35%, and your combined total disability is at least 70%. Special exception: if the pre-existing condition affects a limb or eye and the new injury affects the opposite body part, as little as 5% disability from the new injury may qualify.

SIBTF benefits vary based on age, pre-injury earnings, combined disability rating, and other benefits you receive. We frequently get our clients rated at 100% permanent disability — the maximum award — producing lifetime monthly benefits up to $7,640 per month (California’s 2026 statutory ceiling). Every case is different; we give you a realistic estimate during your free review.

Yes, in most cases. SIBTF is a separate claim filed against the state, not against your employer or their insurer. Even if you settled years ago, you may still pursue SIBTF — though statutes of limitations apply.

No. The Subsequent Injury Benefit Trust Fund pays for the medical-legal evaluations — even if your claim is ultimately denied. You pay nothing out of pocket.

SIBTF cases are slower than typical workers’ comp cases — often 1 to 3 years from filing to award. Because benefits are paid for life, long-term value is substantial. You don’t pay us anything until the case is won.

Virtually any documented physical or mental condition that limited your body or mind before the work injury — prior injuries (work-related or not), diabetes, hypertension, heart conditions, asthma, vision loss, hearing loss, depression, anxiety, PTSD, arthritis, carpal tunnel, autoimmune disorders, cancer history, VA-rated disabilities, and more.

Many workers’ comp attorneys don’t take SIBTF cases. The claims are technical, require specialized medical reports, take years, and are litigated against state attorneys. We’ve built our practice around them.