What to Do in the First 24 Hours After a Work Injury in California

You just got hurt at work. Or your spouse, your parent, or your adult kid did, and you are the one trying to figure out what happens next. The first 24 hours matter more than most people realize, because California workers compensation has hard deadlines and a few traps that quietly hurt claims later.

This is a plain-English checklist. No legal jargon without a definition. The rules below are California-specific, anchored in what the state Division of Workers' Compensation (DWC) and the Department of Industrial Relations (DIR) actually require.

In the First Hour: Get Safe and Get Treated

If the injury is serious, call 911 or get to the nearest emergency room. Workers compensation always pays for genuine emergency care, even if you have not filed paperwork yet. Hospitals know how to bill the employer's insurer; you do not have to figure that out from a gurney.

If it is not an emergency but you do need to be seen, ask your supervisor where the company's designated occupational health clinic is. Most California employers have a Medical Provider Network (MPN), and the first 30 days of treatment generally need to be inside it.

Do not drive yourself if you have hit your head, are bleeding heavily, or are on any medication that affects your judgment. Ask a coworker, ask the company, or call a ride.

Tell Your Supervisor the Same Day, in Writing

California Labor Code section 5400 gives you 30 days to give your employer notice of the injury. But "30 days" is the legal outside limit; the practical rule is same-day notice. If you wait, the insurer can argue your injury happened off the clock, at the gym, in your driveway, anywhere but work.

A verbal mention to a foreman who later quits is not enough. Send a text. Send an email. Use the staff scheduling app if that is how your job runs. A simple message like "I hurt my lower back lifting the third pallet today at about 2 p.m. on the loading dock" is plenty. Date, time, body part, what you were doing. Keep a screenshot for yourself.

Ask for a DWC-1 Claim Form

This is the form that officially starts your workers compensation claim in California. Your employer must give you a blank DWC-1 within one working day of learning about your injury (per the DIR's claim form regulations). If they do not, you can pull a copy yourself from the DIR's website at dir.ca.gov.

Fill out the employee section. Sign and date it. Hand it back, and keep a copy with the date you returned it. The clock for the insurer to accept or deny your claim starts running once that signed form is in the employer's hands. They have 90 days to make a decision (Labor Code 5402). If they let the 90 days pass without a written denial, the law presumes the claim is accepted.

Get Your Story Down While It Is Fresh

Within the first 24 hours, write down what happened. Not for a lawyer, not for the boss, for you. Memory degrades fast, and small details (the broken floor mat, the missing handrail, the coworker who saw it) are exactly what an adjuster will ask about in three weeks.

Useful things to capture:

• The date, time, and exact location of the injury
• What you were doing in the moment
• What hurt right away and what showed up later
• Any equipment, vehicle, or product involved (including model numbers if you can see them)
• Names of any witnesses and how to reach them
• Photos of the scene, your injury, and any visible hazard

If you are in pain and cannot write, dictate it into your phone's voice memo app.

Understand Who Pays for the First Visits

In California, you do not pay anything for medical care that is reasonable and necessary for an accepted work injury. There is no copay, no deductible, no bill at the end of the visit. Even while the insurer is investigating, the law (Labor Code 5402(c)) requires them to authorize up to $10,000 in medical treatment.

If the clinic tries to bill you, hand them the employer's claim information and explain it is a workers comp case. If the clinic still pushes, call the DWC's free Information and Assistance Unit; they handle this kind of thing daily and at no charge to you.

What the First Notice From the Insurer Should Look Like

Within 14 days of getting your claim, the claims administrator must send you a written letter. It will say whether your claim is accepted, delayed pending investigation, or denied, and it will explain your rights. Read it. Save it. If you do not get anything in 14 days, that is itself a problem worth raising.

The letter will list a claims administrator name and a claim number. Write that number on top of every piece of paper you keep for this injury from now on.

A Word About Your Job

People worry, sometimes more than about the injury, that filing a workers comp claim will get them fired. California Labor Code 132a makes it illegal for an employer to retaliate against an employee for filing a workers comp claim. Real-world enforcement is imperfect, but the law is clear, and 132a penalties against employers are stiff (up to $10,000 plus reinstatement and back pay).

If your hours get cut, your shift gets moved, or you get written up for things you never got written up for before, document each instance with dates. Save the texts and emails.

Things to Avoid in the First 24 Hours

A short list of mistakes that come up over and over:

1. Going to your own family doctor outside the MPN. This can put you on the hook for the bill and give the insurer an opening to deny related treatment.
2. Posting on social media. Photos of you smiling at the beach or lifting your kid are screenshotted by insurance investigators all the time.
3. Giving a recorded statement to the adjuster the next day without thinking it through. You can take the call later, or have a lawyer present.
4. Signing anything HR hands you without reading it. No release, waiver, or "agreement" can take away your California workers comp rights, but signing first and asking questions later is a bad pattern.
5. Quitting in frustration. File the DWC-1 first. You can still resign later.