How to File a California Workers' Compensation Claim, Step by Step

What does the California workers' comp filing process actually look like?

Report the injury to the employer in writing within thirty days, complete the DWC-1 claim form, get covered medical care, and the insurer's response clock starts.

The filing process in California has five clear steps, and each step has a deadline tied to a Labor Code section. Missing a step does not always end the claim, but it makes the case harder and gives the insurer an opening to deny. The cleanest path is to do each step on time and in writing.

Step 1, Get medical attention immediately

The first step after any work injury is medical care. For serious injuries, the worker (or a coworker) should call 911. For non-emergency injuries, the worker tells the employer they need medical care and the employer is required under California Labor Code §5402(c) to authorize up to $10,000 in treatment within one day of the completed DWC-1 claim form. Even before the claim form is filed, the worker should not let pain stop them from going to a doctor, California law makes the employer responsible for that bill.

Step 2, Report the injury to the employer within 30 days

An injured California worker must report the injury to the employer within 30 days under California Labor Code §5400. Reporting in writing, by text, by email, or by a signed note, is far better than reporting verbally, because it creates a record. A late report can sometimes be excused for good cause, but a missed 30-day deadline is one of the most common reasons insurers deny otherwise-valid claims. For a slow-developing cumulative-trauma injury under California Labor Code §3208.1, the 30-day clock runs from the date the worker knew or should have known the condition was work-related.

Step 3, Get the DWC-1 claim form from the employer

The employer must give the injured worker a DWC-1 claim form within one working day of learning about the injury under California Labor Code §5401. The DWC-1 is the single form that opens a California workers' compensation case. If the employer does not provide the form, the worker can download it directly from the California Division of Workers' Compensation at dir.ca.gov. The form has two halves: the worker's section (description of the injury, body parts, date and time) and the employer's section.

Step 4, Complete and submit the DWC-1

The worker fills out the employee section of the DWC-1 carefully: every injured body part, the date and time of injury, what the worker was doing when it happened, and whether there were witnesses. Vague descriptions create disputes later. The worker signs the form, keeps a copy, and gives the original to the employer. The employer is then required to forward it to the workers' compensation insurer.

Step 5, The 90-day decision clock starts

Once the completed DWC-1 reaches the insurer, the insurer has 90 days to accept or deny the claim under California Labor Code §5402(b). If the insurer does not decide within 90 days, the injury is presumed compensable, meaning the law treats the claim as accepted by default. During those 90 days the insurer must still authorize up to $10,000 in medical treatment under §5402(c). After acceptance, the worker is entitled to medical care under California Labor Code §4600, temporary disability benefits under California Labor Code §4653 at two-thirds of average weekly earnings, and eventually a permanent disability rating under California Labor Code §4660.

What if the employer refuses to give the DWC-1 form?

The form is available from the Division of Workers' Compensation and from any workers' comp attorney; the employer's refusal does not stop the claim.

Some California employers stall, refuse to provide the DWC-1, or tell the worker the injury "isn't covered." None of that is legal. The DWC-1 is a standard state form available directly from the California Division of Workers' Compensation. The worker can download it, fill it out, deliver it to the employer in writing, and keep a copy. The 30-day notice requirement under California Labor Code §5400 is satisfied the moment the employer learns of the injury, not the moment the form is processed. If the employer is uninsured, California Labor Code §3706 gives the worker the right to sue the employer in civil court outside the exclusive-remedy bar, and California Labor Code §3700.5 makes the failure to carry workers' compensation insurance a misdemeanor.

What protections does the worker have during this whole process?

Up to ten thousand dollars in medical treatment must be authorized within one business day of the completed form, even before the claim is accepted.

California law protects workers from retaliation for filing a claim under California Labor Code §132a. An employer who fires, demotes, or cuts the hours of an injured worker because of the claim faces reinstatement, lost wages, an increase in compensation of up to $10,000, and costs up to $250. For undocumented workers, California Labor Code §3351 extends California workers' compensation coverage regardless of immigration status, and California Labor Code §244 prohibits the employer from threatening to report immigration status as retaliation for the claim.

Related on yazdchilaw.com: California workers' compensation lawyer pillar · what to do if you can't go back to work after a workers' comp injury · what happens if the workers' comp judge mishears your testimony · can you keep workers' comp if you move out of state · California Labor Code §3600 explained.