California gives injured workers two ticking clocks: 30 days to report your injury to your employer, and one year to file a formal workers' compensation claim. Missing either one can end your case before it starts.
The Two Deadlines That Matter Most
Workers' compensation in California runs on two separate clocks, and most denied claims we see in Los Angeles start with a missed deadline on one of them.
- 30 days to report the injury to your employer in writing (California Labor Code § 5400)
- One year from the date of injury to file a formal claim with the Workers' Compensation Appeals Board (Labor Code § 5405)
The 30-day rule sounds short because it is. If you trip on a warehouse floor in Vernon on a Tuesday, your employer should hear about it, in writing, before the end of the month. A verbal mention to a shift lead is not the same thing as written notice.
What "Date of Injury" Actually Means
For a single traumatic event, the date is obvious: the day the forklift hit your foot, the day you fell off the ladder. For repetitive injuries (carpal tunnel, back strain from years of lifting, hearing loss), the date is the day you first knew, or should have known, that the injury was work-related. That is usually the date a doctor first connects the dots for you.
This distinction matters. We have clients in LA who waited two years before seeing a doctor about wrist pain, then assumed it was too late. It was not. The clock started the day the doctor said "this is from your job," not the day the pain started.
What Happens if You Miss the 30-Day Window
You do not automatically lose your case. But your employer gets a strong defense argument: they could not investigate the scene, interview witnesses, or get you to a panel doctor early. The insurance carrier will use the delay to argue your injury was not really work-related, or not as serious as you say.
Exceptions that can save a late report:
- The employer already knew (a supervisor saw the accident)
- You were physically or mentally unable to report
- The employer failed to post the required workers' comp notice in the workplace
What Happens if You Miss the One-Year Filing Deadline
This one is harder to undo. If a year passes from your date of injury and you have not filed a DWC-1 claim form, the carrier can move to dismiss the case on statute-of-limitations grounds. There are narrow exceptions for ongoing medical treatment paid by the employer, ongoing disability payments, and cases where the employer never gave you a claim form, but you do not want to rely on those.
The LA Reality
In Los Angeles, where we see a heavy mix of construction, hospitality, warehouse, and rideshare injuries, the most common pattern is: worker gets hurt, tries to "tough it out," tells a co-worker but not management, and only files when the pain does not go away three months later. By then the insurance carrier has a head start on the defense.
If you are reading this within a few weeks of an injury, file the DWC-1 form now. If you are reading it later, do not assume the case is dead. Call an attorney and get a clear read on which clock applies to your situation.
What to Do Today
- Tell your employer in writing. Email or hand-delivered note. Keep a copy.
- Ask for the DWC-1 claim form. Your employer is legally required to give it to you within one working day of learning about the injury.
- Get medical treatment through the employer's medical provider network (MPN), or your pre-designated doctor if you set one up before the injury.
- Document everything. Photos of the injury, names of witnesses, dates of every medical visit.
- Call a workers' comp attorney before you sign anything from the insurance carrier.
Hurt on the job in Los Angeles? Talk to a real workers' comp attorney. Free, confidential, in English, Español, or Հայերեն. Call (747) 777-5977 or send a message.