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September 2, 2026 · 5 min read

My Workers’ Compensation Claim Was Denied — Now What?

Getting a denial letter after a work injury feels final. It isn't. California law builds in specific appeal paths for both a denied claim and a denied piece of treatment — they're just different paths, and knowing which one applies matters.

Two Different Kinds of Denial

The term "denied" covers two different situations:

  • A denied claim means the insurer disputes that the injury is work-related, happened at all, or is covered — the whole claim is in question.
  • A denied treatment request means the claim itself is accepted, but a specific procedure, medication, or service was refused through Utilization Review (UR).

Each has its own appeal process.

Appealing a Denied Claim

A denied claim can be taken to the Workers' Compensation Appeals Board (WCAB) for a hearing in front of a workers' compensation judge. Medical evidence — your treating physician's records, and often an independent medical evaluation — is usually central to overturning the denial. Strict deadlines apply, so prompt action matters.

Appealing a Denied Treatment Request

A UR denial of medical treatment generally goes to Independent Medical Review (IMR) — a review by an independent physician based on the medical records submitted, not a hearing. This makes the quality and completeness of the initial medical documentation especially important, since IMR is largely a paper process.

Common Reasons Insurers Deny Claims

  • Disputing that the injury happened at work, or happened at all
  • Arguing the injury is related to a pre-existing condition rather than work
  • Missed reporting deadlines or inconsistencies in how the injury was described
  • Conflicting opinions between medical providers

The Practical Takeaway

A denial letter should state the reason for the denial and your appeal rights — read it carefully, and don't let the appeal deadline pass while deciding what to do. The appeals process is where legal representation tends to matter most, since it shifts from a paperwork process to active litigation before the WCAB.

This is general information about how California's appeal process works, not a description of your specific claim — a free consultation can review the actual denial letter and the facts of your case.

Attorney Advertising. Prior results do not guarantee a similar outcome. This page is general information, not legal advice, and does not create an attorney-client relationship.

Injured at Work? Get a Free Case Evaluation.

Free consultation. In California workers’ compensation cases, attorney fees are set by the Workers’ Compensation Appeals Board and paid out of the benefits awarded — you do not pay a fee unless the firm wins your case.