Workers’ Comp Claim Denied in California – What to Do Next

California workers' compensation law is built to protect injured workers. Under Labor Code section 3202, courts must interpret the law liberally in favor of the employee. That principle runs through every procedural rule in the system, including the rules that govern what happens after a denial. The insurance carrier filed a piece of paper. Your rights are still intact, and in some situations they are stronger now than they were before the denial arrived.

Here is what a denial actually triggers, what the insurance company hopes you will not do next, and why acting quickly matters.

What a Denial Actually Means in California Workers' Compensation

A denial letter means the insurance carrier has decided to contest your claim. It does not mean a judge has looked at your medical records. It does not mean anyone has weighed the evidence. In most cases, a claims adjuster reviewed your file, made a coverage decision, and sent a form letter. That is the entire process on their end.

On your end, workers' comp claim denied opens the door to the formal dispute resolution process at the Workers' Compensation Appeals Board. That process includes independent medical evaluations, formal discovery, and the right to a hearing before a workers' compensation judge. The insurance carrier's denial puts the case into a system designed to resolve these disputes, and that system has rules that protect injured workers at every stage.

The first question I ask when a client brings me a denial letter is not about the merits of the claim. It is about the timing. When was the DWC-1 claim form filed, and when did the denial arrive? The answer to that question can change the entire posture of the case.

The 90-Day Presumption: When a Late Denial Works Against the Insurance Company

Count the days between the date your DWC-1 claim form was filed and the date on the denial letter. If more than 90 days passed, the insurance company has a serious problem. The law presumes your injury is work-related, and the burden shifts to the employer to prove otherwise.

This is not a technicality. The 90-day presumption under Labor Code section 5402(b) is one of the most powerful protections in California workers' compensation law. Insurance carriers know the deadline. When they miss it, the consequences at trial are severe.

The Evidence Exclusion Rule

California law gives injured workers powerful tools to fight a workers' compensation denial, including the 90-day presumption under Labor Code section 5402(b).

The presumption is not just a burden shift for a workers' comp claim denied. It is an evidence exclusion rule. Labor Code section 5402(b) provides that the presumption “shall only be rebutted by evidence discovered subsequent to the 90-day period.” Evidence that existed or was obtainable within the first 90 days, including your prior medical records, the employer's investigation files, and witness statements, cannot be used to challenge the presumption at trial. Judges enforce this rule strictly. I have seen cases where a carrier's strongest evidence was thrown out entirely because it was available during the first 90 days and the carrier failed to act on it in time.

The Court of Appeal confirmed the breadth of this rule in Williams v. WCAB (1999) 74 Cal.App.4th 1260. In Williams, the employer initially accepted the claim and later denied it. The court held that Labor Code section 5402 still applied. The carrier could not escape the presumption by accepting the claim early, buying time, and then denying later. The 90-day clock runs from the original DWC-1 filing date, and no strategic maneuvering by the carrier resets it.

What to Do Immediately After Your Workers' Comp Claim Is Denied in California

A denial letter is not the end. It is the starting line for the formal dispute process. There are three things you should do as soon as the denial arrives.

Request a QME Panel Evaluation

The QME process is how disputed medical issues get resolved in California workers' compensation. QME stands for Qualified Medical Evaluator. These are physicians certified by the Division of Workers' Compensation to conduct independent medical-legal evaluations.

Under Labor Code section 4062.2(b), a party may request a QME panel 10 days after a triggering event. A denial letter qualifies as a triggering event. You do not need to send a separate request letter to start the clock. Once the denial issues, the 10-day waiting period begins. Under California Code of Regulations section 10605, the mailbox rule adds 5 days for California mailing, so the earliest a panel request can typically be submitted is day 15 after the denial was mailed.

The QME evaluation is critical because it produces an independent medical opinion on whether your injury is work-related. This opinion carries significant weight with the judge. Getting a panel requested quickly means the evaluation happens sooner, and your case moves forward instead of stalling.

Self-Procure Medical Treatment

When a claim is denied, the insurance carrier typically stops authorizing medical treatment. That does not mean you have to stop treating. Under Labor Code section 4605, an injured worker may obtain medical treatment at the worker's own expense from a physician of the worker's choosing.

This matters for two reasons. First, you need treatment. An untreated injury gets worse, and the medical record suffers when there is a gap in care. Second, the treating physician's records become evidence. In Rose v. Los Angeles Dodgers (2024) 89 CCC 1016, the WCAB held that treating physician medical-legal reports are admissible in fully denied cases without going through the QME process. When the carrier has denied everything and authorized no treatment, your treating physician can produce reports that serve as evidence in your case.

If you cannot afford to self-procure treatment, this is one of the strongest reasons to consult with an attorney immediately. An attorney can help you get into treatment through providers willing to work on a lien basis, meaning the provider gets paid from the eventual resolution of the claim.

File an Application for Adjudication of Claim

A workers' compensation denial in California is a position taken by an insurance adjuster, not a final decision by a judge.

Filing an Application for Adjudication of Claim opens a formal case at the Workers' Compensation Appeals Board. This is not a lawsuit in the traditional sense. It is the procedural step that gives the WCAB jurisdiction over your dispute and puts the insurance carrier on notice that you are pursuing your rights.

Once the application is filed and the medical record is developing, either party can file a Declaration of Readiness to Proceed under California Code of Regulations section 10742. The DOR triggers the hearing calendar and moves the case toward a Mandatory Settlement Conference, where most cases resolve.

The Statute of Limitations After a Workers' Comp Denial in California

The timing of your response matters because a denial can start a statute of limitations clock. In Kaiser Foundation Hospitals v. WCAB (Webb) (1977) 19 Cal.3d 329, the California Supreme Court held that a complete denial of an entire claim triggers a one-year statute of limitations from the date the denial was given.

There are two critical qualifications. First, the denial must be a complete denial of the entire claim. A denial of specific benefits only, such as permanent disability while accepting the injury itself, does not trigger the one-year period. The entire claim must be rejected. Second, the denial must be in writing and must comply with the notice requirements in California Code of Regulations sections 9810 et seq. An informal email or a phone call from the adjuster does not start the clock.

If you received a denial letter more than six months ago and have not taken any action, consult with an attorney immediately. The one-year deadline is enforceable, and missing it can bar your claim entirely.

How Workers' Compensation Attorneys Get Paid in California

I hear this concern from nearly every person who calls after a denial: “I cannot afford an attorney right now.” You do not have to. Workers' compensation attorneys in California work on a contingency fee basis. Under Labor Code section 4906, attorney fees are set as a percentage of the benefits recovered and must be approved by the WCAB. You pay nothing out of pocket. The attorney's fee comes from the award or settlement at the end of the case, not before.

This fee structure exists because the Legislature recognized that injured workers need legal representation and should not be priced out of it. If an attorney takes your case, the attorney is investing time and resources on the belief that your claim has merit. That alignment of interest is built into the system.

Frequently Asked Questions About Workers' Comp Claim Denied in California

Can a workers' comp claim be denied after it was initially accepted?

Yes. An employer can deny a claim it previously accepted. But the 90-day presumption under Labor Code section 5402 runs from the original DWC-1 filing date, not from the date of denial. Under Williams v. WCAB (1999) 74 Cal.App.4th 1260, the Court of Appeal held that a carrier cannot avoid the presumption by initially accepting a claim and later denying it. If more than 90 days passed from filing, the presumption still applies.

What if the denial came quickly, within a few weeks of my injury?

A denial within 90 days of the DWC-1 filing means the Labor Code section 5402 presumption does not apply, and the burden of proving your injury is work-related stays with you. This is the normal posture of a disputed claim, and it is still a case that can be won. Your treating physician's records, the QME evaluation, coworker statements, and workplace evidence all become part of the record that a judge will weigh.

I did not hire an attorney when I filed. Can I still get one now?

Yes. You can hire a workers' compensation attorney at any stage of your case. Under Labor Code section 4906, attorneys in California workers' compensation cases are paid on a contingency basis, with fees approved by the WCAB. You pay nothing upfront. The attorney's fee comes from the eventual award or settlement, not out of your pocket.

Does filing an appeal mean I have to go to trial?

No. Most California workers' compensation cases, including for workers' comp claim denied, resolve through settlement before trial. Filing an Application for Adjudication of Claim and pursuing the QME process puts you in a position to negotiate with a complete medical record and the formal authority of the WCAB behind you. Trial is available if settlement fails, but it is the exception, not the rule.

What does the workers' comp denial letter have to say to be valid?

A denial that triggers the one-year statute of limitations under Kaiser v. WCAB (Webb) must be a written denial of the entire claim, complying with the notice requirements in California Code of Regulations sections 9810 et seq. A denial of specific benefits only, such as permanent disability, does not start the one-year clock. An informal email or verbal denial does not qualify. If you received something that does not look like a formal denial letter from the insurance carrier, consult an attorney immediately.