A denial letter from a workers’ comp insurer can feel like the ground dropping out from under you. You’re injured, possibly out of work, and the system you counted on just said no. That fear is understandable, but a denial isn’t the end of your claim. It’s the beginning of a legal dispute with a defined process and multiple stages where that decision can be reversed.
At Smolich and Smolich, we’ve spent more than 50 years representing Sacramento workers, including union members navigating the overlap between workers’ comp and collective bargaining rights. What follows is an honest walkthrough of how the appeals process works in California, what the deadlines mean, and what happens to your income and medical care while you fight.
What a Denial Letter Actually Means
When a claims administrator denies your workers’ comp claim, it means the insurer has concluded your injury isn’t covered. It doesn’t mean a judge has ruled against you. You still have the right to challenge that decision before the California Division of Workers’ Compensation (DWC), and many initially denied claims are ultimately resolved in the worker’s favor.
Before you can respond effectively, you need to know what type of denial you received, because different denials trigger different responses.
- A delayed claim isn’t a denial at all. Under California Labor Code Section 5402, if the insurer fails to accept or deny your claim within 90 days of the date your claim form is filed, the injury is legally presumed compensable. If that window passed without a formal decision, you may already be in a stronger position than you realize.
- A full claim denial means the insurer is disputing that the injury happened at work, that it was serious enough to be compensable, or that it falls within the policy’s coverage. This is what most people picture when they think of a denial.
- A utilization review denial is different. It means a specific treatment your doctor requested was denied, not the entire claim. These go through Independent Medical Review (IMR) with the DWC, not the same appeals path as a full denial.
The California Workers’ Comp Appeal Process, Stage by Stage
Most workers who receive a full denial picture a single appeal with a simple outcome. The actual process is a sequence of distinct stages, each with its own rules and deadlines. A misstep at one stage can close the door to the next.
Application for Adjudication of Claim
The first formal step is filing an Application for Adjudication of Claim with the Workers’ Compensation Appeals Board (WCAB). This opens your case before the court system. The general filing window is one year from the date of injury, the last date you received benefits, or the last date medical treatment was paid, whichever is most recent. The Sacramento DWC district office, located at 160 Promenade Circle, Suite 300, accepts in-person filings Monday through Friday from 8:00 a.m. to 11:00 a.m. and 1:00 p.m. to 4:00 p.m. You can also file electronically through the Electronic Adjudication Management System (EAMS). Cases filed here are decided by a workers’ compensation judge, not a jury.
Mandatory Settlement Conference
Once your application is filed, the court schedules a Mandatory Settlement Conference (MSC). Both sides appear before a workers’ compensation judge and attempt to resolve the dispute without going to trial. If a settlement is reached, the case closes. If it isn’t, the judge sets the case for trial. Missing an MSC without prior court approval can result in your case being dismissed, so these dates aren’t negotiable.
Trial
At trial, both sides present evidence, medical reports, and witness testimony. The judge issues a written decision called a Findings and Award based on the record. If that decision goes against you, it’s not the last word, but you must act quickly.
Petition for Reconsideration
If the trial judge rules against you, you can file a Petition for Reconsideration with the WCAB. This is a formal written argument that the judge made a legal error. It must be filed within 20 days of the decision, or within 25 days if the decision was mailed to you. The WCAB then reviews the record and can affirm, reverse, or amend the decision.
Writ of Review
If the WCAB denies the Petition for Reconsideration, the final avenue is a Writ of Review filed with the California Court of Appeal. This must be filed within 45 days of the WCAB’s order and is limited to errors of law found in the existing record. New evidence can’t be introduced at this stage.
Deadlines That Can End Your Appeal Before It Starts
The California workers’ comp system runs on hard deadlines. There’s no grace period for good intentions.
- The Petition for Reconsideration window is absolute. A petition filed even one day late will be dismissed, and the judge’s decision becomes final. Twenty days from the decision date, or 25 if mailed. Not 21. Not 26.
- Filing the wrong petition type will cost you the appeal. A Petition for Reconsideration applies only to decisions issued after trial. A Petition for Removal is the correct vehicle for challenging pre-trial procedural orders, discovery disputes or orders requiring you to attend a medical evaluation. These aren’t interchangeable.
- Missing your MSC without court approval can end your case. If something prevents you from attending, notify the court immediately and in advance.
What Happens to Your Medical Coverage & Income During the Appeal
Once a claim is denied, the insurer typically stops covering medical expenses. That doesn’t mean treatment has to stop entirely. Some physicians will continue treating injured workers on a lien basis, deferring payment until the appeal is resolved. If the appeal is successful, the award covers their fees. If you’re covered by a union health plan, that coverage may remain available during the appeal and can bridge the gap. Contact your union representative immediately after receiving a denial to find out what benefits remain accessible.
For lost wages, California State Disability Insurance (SDI) through the Employment Development Department (EDD) can partially replace income while your appeal is pending. SDI doesn’t require a successful workers’ comp claim to qualify. Temporary disability benefits from workers’ comp won’t be paid during the appeal if the claim has been denied, but SDI and union benefits may provide meaningful support in the interim.
Why Union Members Face Unique Circumstances After a Denial
Workers covered by a collective bargaining agreement have resources that exist entirely outside the California workers’ comp system and can be used at the same time as a WCAB appeal. Many collective bargaining agreements include grievance procedures, supplemental disability benefits, or access to legal referral services that the insurer’s denial doesn’t touch.
A union representative or shop steward can help document the workplace incident, identify coworkers who witnessed it, and flag any employer conduct that looks like retaliation. That documentation builds the evidentiary record your attorney can use before the WCAB and creates a parallel grievance record that can put additional pressure on the employer during the appeal.
Our connection to Sacramento’s union movement goes back more than a century. We understand how union benefits and workers’ comp claims intersect in ways that matter: how to coordinate union health coverage, grievance timelines, and WCAB proceedings so nothing slips through the gaps.
Building a Stronger Appeal: Evidence That Moves the WCAB
A Petition for Reconsideration isn’t a general complaint about the outcome. California Labor Code Section 5903 requires that it identify a specific legal basis: that the judge acted without authority, that fraud affected the outcome, that the evidence doesn’t support the findings, that newly discovered evidence exists, or that the decision isn’t justified by the record. Vague objections are denied.
Medical evidence carries particular weight. Reports from a Qualified Medical Evaluator (QME), a physician appointed through the DWC process to resolve medical disputes, or an Agreed Medical Evaluator (AME), jointly selected by both parties, are often the decisive factor in whether the WCAB finds an injury compensable. If the denial was driven by a QME report that disagreed with your treating physician, challenging that report through a well-prepared petition is usually the most direct path forward.
A denied workers’ comp claim is a legal dispute with a structured process, not a closed door. Each stage has rules, each deadline is real, and the evidentiary record you build now determines what options remain later. If you’re facing a denial and want to understand where your case stands, contact Smolich and Smolich at (916) 571-0400 to talk through your situation.