Denied Workers' Comp Claim? Orange County Appeals Attorneys

Why are workers' comp claims denied in California?

A denial letter from a workers' comp insurer is one of the most disorienting documents an injured worker can receive. It is also rarely the last word. California's workers' comp statute is built on a presumption that injuries reported promptly and supported by medical care should be paid — and the law gives the carrier a limited window to investigate before that presumption hardens into law.

California Labor Code §5402(b) provides that if liability is not rejected within 90 days of the date the claim form is filed, the injury is presumed compensable, and that presumption can be rebutted only by evidence discovered subsequent to the 90-day period

^[1]

. The 90-day clock is one of the most important tools an injured worker has. A denial issued on day 91, or based on facts the carrier already had on day 30, often cannot survive litigation.

"If liability is not rejected within 90 days after the date the claim form is filed under Section 5401, the injury shall be presumed compensable under this division."

— California Labor Code §5402(b)

Common grounds for denial — and why they often fail

Carriers typically deny on a handful of recurring theories: that the injury is not work-related (an "AOE/COE" denial — arising out of and in the course of employment); that the condition is pre-existing or degenerative; that the worker missed the 30-day reporting window in §5400; that the worker was an independent contractor rather than an employee; or that a treating physician's opinion does not establish industrial causation. None of these are automatic dispositions. Each can be answered with the right evidence, the right medical-legal record, and timely procedural moves.

Misclassification denials are particularly common. Under the ABC test codified in California Labor Code §2775 (AB 5), a worker is presumed to be an employee unless the hiring entity proves all three statutory elements — including that the work is outside the usual course of the hiring entity's business^[2]. Many "contractors" in delivery, cleaning, construction support, and gig roles are legally employees and entitled to workers' comp.

Benefits you may be entitled to after a successful appeal

When a denial is reversed, the same benefits available on any compensable claim become payable: medical treatment under §4600, temporary disability indemnity under §4653, permanent disability under §§4658 and 4660, supplemental job displacement benefits, and — where the carrier acted unreasonably in denying — penalties under §5814 (which incorporates the consolidated penalty provisions of former §5814.5) and increased compensation under §5814 for delayed payments. If the employer was uninsured at the time of injury in violation of California Labor Code §3700, the Uninsured Employers Benefits Trust Fund administered by the DWC may pay benefits and pursue reimbursement from the employer^[3].

What the appeals process looks like

Most contested claims are litigated at the Workers' Compensation Appeals Board, the state's administrative court for workers' comp. The process begins by filing an Application for Adjudication of Claim, which assigns a case number and opens the formal litigation track. From there, both sides conduct discovery — medical records, prior claim files, depositions of the worker and treating physicians, and a panel-QME or AME evaluation under §§4060–4062.

The next milestone is the Mandatory Settlement Conference. Most cases settle either at MSC or shortly after, often through a Compromise & Release or Stipulated Award. Cases that do not settle proceed to trial before a workers' comp administrative law judge. Either side can then petition for reconsideration to the seven-member WCAB panel and, ultimately, seek review in the California Court of Appeal.

Common insurer tactics

A few patterns recur. Carriers issue boilerplate denial letters citing AOE/COE while the actual investigation is incomplete, hoping the worker will not push back. They schedule defense medical examinations designed to generate adverse causation opinions. They invoke apportionment under §4663 to attribute most of the disability to non-industrial factors. And they delay authorization of treatment to pressure settlement. Each tactic has a procedural answer, but only if the worker preserves rights by filing on time.

How Winters & Banks fights denied claims

Most denials I review have one thing in common: a procedural mistake by the carrier that the worker never saw. The §5402 clock, the lateness of a defense exam, an apportionment opinion that does not meet the substantial-medical-evidence standard — each is a thread to pull. Pulling them is the work.

References

1. [1]
   Cal. Labor Code §5402 (90-day presumption of compensability) — California Labor Code
2. [2]
   Cal. Labor Code §2775 (ABC test for employee classification) — California Labor Code
3. [3]
   Cal. Labor Code §3700 (employer's duty to insure) and Uninsured Employers Benefits Trust Fund — California Labor Code