California's Filing Window: 90 Days From Injury
In California, a workers' compensation claim must be filed within 90 days of the injury or the date the injury was discovered. The 90‑day deadline starts on the day the employee first becomes aware of the injury, not when the injury actually occurred. This rule applies whether the injury happened on or off the job, as long as the employer is liable.
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Why the Discovery Rule Matters
If a worker suffers a delayed‑onset injury—say, a repetitive strain or a stress fracture that appears weeks later—the 90‑day clock starts on the discovery date. Missing this window can result in a denial of benefits, even if the injury was work‑related.
What Happens If You File Late
Claims filed after the 90‑day limit are typically denied outright. An employer can still contest the claim, but the employee's chance of receiving benefits drops dramatically. In some cases, a court may grant a short extension if the employee can prove extraordinary circumstances, but this is rare.
Key Dates to Track
| Event | Deadline | What to Do |
|---|---|---|
| Injury occurs or is discovered | Day 0 | Notify employer and medical provider immediately |
| File claim with employer | Within 30 days | Submit Form 2100 and supporting docs |
| Employer reviews claim | Within 30 days of filing | Respond to any requests for additional info |
| Workers' Compensation Appeals Board hearing | Within 90 days of injury discovery | Prepare evidence and representation |
Practical Tips to Meet the Deadline
- Keep a detailed injury log: date, symptoms, and medical visits.
- Set calendar reminders for 30‑day and 90‑day milestones.
- Use the California Workers' Compensation Online Filing System if available; it timestamps your submission.
- Ask your employer's HR department for a copy of your claim form and confirm receipt.
When a Delay Is Inevitable
If you foresee a delay—such as needing time to locate a specialist—contact the Workers' Compensation Appeals Board (WCAB) as soon as possible. Provide a written explanation of the circumstances and any steps taken to comply. While the WCAB rarely grants extensions, documentation of good faith efforts can mitigate penalties.
Common Misconceptions Debunked
- "I can file anytime after the injury." The law is strict; the 90‑day window is non‑negotiable unless a court orders otherwise.
- "The employer's deadline is 30 days." That is only the typical processing period; the employee's 90‑day limit remains.
- "I can file a claim if I'm still injured after 90 days." Late claims are almost always denied unless an extension is granted.