Denied Workers' Comp Claim in California

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Short answer: a denied workers’ compensation claim in California is not the end of the claim. It is the point where the dispute moves from the insurer’s desk to the Workers’ Compensation Appeals Board, where a workers’ compensation judge, not the insurer, decides whether the injury is covered. The steps are an Application for Adjudication of Claim, a medical-legal evaluation by a qualified medical evaluator, a hearing or trial, and, if necessary, a petition for reconsideration within 20 days of an adverse decision. Most denied claims that are properly worked up end in benefits or a settlement. Abdi & Associates, Inc. represents workers with denied claims throughout California, and attorney fees are paid only from what is recovered.

What a denial means

A denial is the claims administrator’s written position that the injury is not covered, usually because it contends the injury did not arise out of and in the course of employment (an AOE/COE denial), that the report was late, that the worker was not an employee, that the condition is pre-existing or non-industrial, or that there is not enough medical evidence. The denial must be in writing, and the administrator has 90 days from the date you file the DWC-1 claim form to make it; if it does nothing within 90 days, the injury is presumed compensable and the insurer can rebut the presumption only with evidence it could not have obtained during the 90 days (Labor Code section 5402(b)). Even during the delay period, the insurer must pay for up to $10,000 in medical treatment (section 5402(c)).

Denials are common, particularly for cumulative trauma claims, claims filed after termination, psychiatric claims, and injuries with no witnesses. A denial issued by an adjuster is not a finding by anyone with authority to decide the case.

Step one: file the Application for Adjudication of Claim

To contest a denial, an Application for Adjudication of Claim is filed with the Workers’ Compensation Appeals Board at the district office with venue, which is generally the county where you live, the county where the injury happened, or the county of your attorney’s office (Labor Code section 5501.5). The application must be served on the claims administrator and employer. The Appeals Board then issues a notice with your case number, which begins with “ADJ.” Filing the application is what stops the one-year deadline in section 5405, so it should be filed promptly after any denial and, in many cases, before one.

Step two: get a medical-legal evaluation

A denial of the injury itself is resolved on medical evidence. After a denial, either side may request a panel of three qualified medical evaluators (QMEs) in the appropriate specialty from the Medical Unit (Labor Code sections 4060 and 4062.2). Each side strikes one name and the remaining physician examines you, reviews the records and writes a report on whether the injury is work related, what body parts are involved, whether you need treatment, and whether you are temporarily or permanently disabled. Represented parties may instead agree on an agreed medical evaluator (AME). The QME or AME report usually decides the case; a favorable report leads to acceptance or settlement, and a deficient one can be challenged, supplemented with a deposition of the evaluator, or, in limited circumstances, replaced. Disputes about specific treatment requests in an accepted claim take a different route, through utilization review and independent medical review; see our medical benefits page.

Step three: hearings and trial

Either party can file a Declaration of Readiness to Proceed to request a hearing. When the dispute is whether the injury arose out of and in the course of employment and the worker is represented, the case is set for a priority conference, where the judge sets the medical-legal process and a trial date (Labor Code section 5502(c)). Other disputes go to a mandatory settlement conference, where the judge helps the parties try to settle and, failing that, sets the case for trial with the exhibits and witnesses identified. At trial the worker testifies, medical reports are admitted, and the judge decides the case. There is no jury. The judge must issue a written decision within 30 days after the case is submitted (section 5313), and the decision is served on the parties by the Appeals Board.

Step four: petition for reconsideration

If either party disagrees with the judge’s decision, the remedy is a petition for reconsideration to the Appeals Board. The petition must be filed within 20 days of service of the decision, plus five days when the decision was served by mail within California, and it is the date the Appeals Board receives it that counts (Labor Code section 5903; Cal. Code Regs., tit. 8, § 10605). The petition must be verified, must state the specific grounds allowed by section 5903 (for example, that the evidence does not justify the findings or that the judge acted beyond his or her powers), and must cite the evidence in the record. A commissioner panel of the Appeals Board decides the petition, and its decision can be taken to the Court of Appeal by petition for writ of review within 45 days (section 5950). A late petition is dismissed regardless of merit, so the 20-day clock is the most important deadline in a litigated case.

What you should gather

the denial letter and every other notice from the claims administrator;
your DWC-1 claim form and proof of when you reported the injury;
all medical records, including from your own doctors and any emergency room visit;
names of witnesses and any incident report;
pay stubs for the year before the injury, which set the benefit rate;
a written timeline of what happened and what you told each person.

Deadlines that matter in a denied claim

One year from the date of injury to file the Application for Adjudication of Claim (section 5405).
90 days for the insurer to accept or deny after the DWC-1 is filed (section 5402(b)).
20 days (plus 5 for mail service) to petition for reconsideration of a judge’s decision (section 5903).
45 days to seek review in the Court of Appeal after the Appeals Board rules (section 5950).
Five years from the date of injury to reopen an award for new and further disability (section 5410).

Cómo puede ayudarte Abdi & Associates

Abdi & Associates, Inc. represents injured workers with denied claims throughout California. We file the application, obtain the QME panel and prepare you for the evaluation, take the evaluator’s deposition when the report is wrong, litigate the case at the priority conference and trial, and handle petitions for reconsideration. We work remotely, by phone, video and secure electronic signature, and hearings before the Appeals Board are generally conducted remotely as well. Attorney fees are set by the workers’ compensation judge as a percentage of the benefits recovered and are paid from the award; there is no fee if nothing is recovered. Call (888) 772-2529 or, in Spanish, (323) 310-4264.

Preguntas frecuentes

How long do I have to appeal a workers’ compensation denial in California?

There is no separate appeal deadline for the insurer’s denial letter itself; the claim must be filed with the Appeals Board within one year of the injury. A judge’s decision must be challenged within 20 days of service.

Can I get medical treatment while my claim is denied?

Yes. Many doctors treat denied cases on a lien basis and are paid by the insurer if the claim is found compensable, and a provider may not bill you directly for treatment of a work injury. Your group health insurance may also pay and later be reimbursed.

Do I need a lawyer to fight a denial?

You may represent yourself, and the Information and Assistance Unit of the Division of Workers’ Compensation can answer questions. Claims administrators handle these cases every day, and denied claims turn on medical-legal procedure that is difficult to manage alone. Because the fee comes out of the recovery, representation costs nothing up front.

Páginas relacionadas

Sources: Cal. Lab. Code §§ 4060, 4062.2, 5313, 5402, 5405, 5410, 5500, 5501.5, 5502, 5902, 5903, 5950; Cal. Code Regs., tit. 8, §§ 10605, 10945.

Revisado por Shawn Abdi, abogado, de Abdi & Associates, Inc. Última revisión: 4 de septiembre de 2026. Publicidad de abogados. Esta página contiene información general, no constituye asesoramiento jurídico sobre su situación concreta. Los plazos legales tienen excepciones; consulte con un abogado los plazos que se aplican a su caso.

Challenging a Denied Workers’ Compensation Claim in California