To fill out California’s DWC-1 form, complete the top half yourself with your name, address, Social Security number, the date, time, and location of the injury, and a full description of what happened and every body part affected. Then deliver the form to your employer in a way that creates a dated record — either in person with a signed, dated copy handed back to you, or by certified mail with a return receipt. Your employer fills in the bottom half, gives you a dated copy, and forwards it to the claims administrator.
Getting a Blank Form
Your employer is required to give you a blank DWC-1 within one working day of learning you were hurt, as long as the injury caused you to miss time beyond your shift or needed more than basic first aid. “First aid” under the statute means a single treatment plus one follow-up visit for minor cuts, burns, or splinters. Anything beyond that triggers the employer’s duty to hand over the form.
If you’d rather not wait, you can download the form yourself from the California Division of Workers’ Compensation. The DWC forms page offers it in English, Spanish, Chinese, Korean, Tagalog, and Vietnamese.1Division of Workers’ Compensation. DWC Forms Blank copies are also available at local Employment Development Department offices.2California Legislative Information. California Code Labor Code 5401
Filling Out the Employee Section
The top half is yours. Labor Code section 5401 spells out the fields: your name, home address, Social Security number, the time and location where the injury happened, and a description of the injury covering every body part affected.2California Legislative Information. California Code Labor Code 5401
Use your full legal name exactly as it appears in your employer’s records. The home address you list is where the insurance company will mail everything about the claim, so use one you actually check. Your Social Security number links the claim to state tracking systems; HIPAA permits disclosure of health information for workers’ compensation purposes without a separate authorization, so the number stays inside the claims process.
For date and time, write the exact date and approximate time the injury happened. For a repetitive-stress injury or a condition that came on gradually, write the date you first noticed symptoms or first realized the problem was work-related. Conflicting dates between the form and your medical records are one of the most common reasons a claim gets questioned, so pick a date you can explain and stick with it.
For location, write the full street address where the injury occurred, even if that’s not your employer’s main office. Job sites, client locations, and company vehicles all count.
Describing the Injury and Body Parts
This is the field that most often causes trouble later. The form tells you to “describe your injury completely” and “include every part of your body affected.”3Department of Industrial Relations. Workers’ Compensation Claim Form DWC 1 and Notice of Potential Eligibility Take that literally. If you strained your back lifting a box and your shoulder also hurts, write both. Body parts you leave off the form can be hard to add to the claim later.
Use plain, specific language for how it happened. “Slipped on a wet floor in the warehouse and fell onto my left hip” is far better than “hurt at work.” Make sure what you write matches what you told the doctor at your first visit. Inconsistencies give the claims administrator a reason to investigate.
Submitting the Form to Your Employer
Under California law, the claim form is officially filed when it is personally handed to the employer or received by the employer through first-class or certified mail.2California Legislative Information. California Code Labor Code 5401 Either method is valid. What matters is that you can prove the date.
If you hand the form to a manager or HR representative, ask them to sign and date a copy on the spot and hand it back to you. That signed copy is your proof. If you mail it, use certified mail with a return receipt. The green card that comes back establishes exactly when the employer received the form, and that date starts every deadline that follows.
Digital submission may work if your company has an established electronic process, but get a written or emailed confirmation with a date stamp. Whatever route you take, keep at least one copy of the completed form for yourself before you turn in the original.
The 30-Day Notice Deadline
California law requires you to give your employer written notice of a workplace injury within 30 days of the incident.4California Legislative Information. California Labor Code 5400 Filing the DWC-1 satisfies that requirement. For gradual injuries like carpal tunnel or hearing loss, the 30-day window starts when you first realized, or reasonably should have realized, that the condition was work-related. Missing the deadline doesn’t automatically kill your claim, but it gives the employer grounds to fight it. File as soon as you can.
What Your Employer Fills In
The bottom section is for the employer. Once you return the completed form, the employer must enter the date they received it, their insurance carrier’s name, and other identifying information, then give you a dated copy and forward the form to their workers’ compensation claims administrator.2California Legislative Information. California Code Labor Code 5401
If the employer stalls, either on handing you a blank form in the first place or on returning a dated copy after you submit, you can file the form independently and contact the Division of Workers’ Compensation Information and Assistance Unit at 1-800-736-7401 for help enforcing these requirements.5Department of Industrial Relations. DWC Information and Assistance Unit
What Filing the Form Triggers
Submitting the DWC-1 starts two clocks worth knowing about while you decide when to file.
Within one working day after you file the form, the employer must authorize medical treatment for your injury, even though the claim hasn’t been formally accepted. Treatment during this investigation period is capped at $10,000 and must follow the state’s medical treatment guidelines.6California Legislative Information. California Code Labor Code 5402 You don’t have to wait for a decision before seeing a doctor.
The claims administrator then has 90 days from the date you filed to accept or deny the claim. If they don’t reject it within that window, the injury is presumed compensable, and that presumption can only be overturned by evidence discovered after the 90 days have run.6California Legislative Information. California Code Labor Code 5402 The sooner you file, the sooner that clock starts.