Denied and Delayed Claims

A denial letter is not the end of your claim. It is the start of the part where a judge gets involved.

This page covers what a denial actually means, the rule that can make your injury presumed compensable regardless of what the letter says, the defenses insurers actually use, every deadline, and what you are owed while the decision is pending.

Two things to check before anything else.

1. Count the days. If you filed a DWC-1 claim form with your employer and liability was not rejected within 90 days, your injury is presumed compensable under Labor Code § 5402(b) — and that presumption can only be rebutted by evidence discovered after the 90 days. For safety-officer presumption claims under §§ 3212–3212.85 and 3212.9–3213.2, the period is 75 days.

2. A delay notice is not a denial. Serial delay letters do not stop the 90-day clock. Nothing does.

Delay is not denial

These are different legal events and the difference matters.

Delay means the claims administrator has not decided. It must send you a written delay notice explaining what it is investigating and when it expects to decide (8 CCR § 9812). It may issue further delay notices — but only inside the 90-day ceiling.

Denial means the administrator has decided to reject liability. That decision, not the letter, is what has to happen within 90 days.

That distinction comes from Rodriguez v. WCAB (1994) 30 Cal.App.4th 1425, where a denial letter was mailed on day 89 and received on day 96. The court held the timely act was the rejection: "it is the rejection which must occur within the 90-day period, not the receipt of notice of that rejection."

That cuts both ways. An insurer with no letter inside 90 days can still try to prove it made a timely internal decision. But it bears the burden — and 8 CCR § 9812 separately required a denial notice within 14 days of the determination. An insurer claiming a day-80 decision but sending a day-120 letter has an unexplained forty-day regulatory violation sitting in its own claim file.

The 90-day presumption

Labor Code § 5402(b)(1): "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. The presumption of this subdivision is rebuttable only by evidence discovered subsequent to the 90-day period."

§ 5402(b)(2) — added by SB 1127, effective January 1, 2023 — shortens the period to 75 days for injuries and illnesses covered by the presumptions in §§ 3212–3212.85 and 3212.9–3213.2 (the range deliberately skips the COVID-19 presumptions at §§ 3212.86–3212.88, which keep the 90-day period): cancer, heart trouble, hernia, pneumonia, tuberculosis, meningitis, MRSA, blood-borne infectious disease, and PTSD for qualifying public safety personnel.

When the clock starts

On the day you file the DWC-1 claim form with your employer. Not on the day your employer learned you were hurt.

This is settled by the California Supreme Court in Honeywell v. WCAB (Wagner) (2005) 35 Cal.4th 24. Wagner's wife told the employer he had been hospitalized for a work-stress condition in October 1998. The employer did not send a claim form until January. The denial came in March — beyond 90 days from the employer's knowledge, but within 90 days of the filing. The Court held the clock runs from filing.

So the sequence is:

1. You notify your employer of the injury.
2. Your employer must give you a DWC-1 within one working day (LC § 5401(a)).
3. You complete and return it.
4. From that filing, the administrator has 90 days (75 for presumption claims).

If your employer never gave you a claim form, the 90 days does not start — but you have a different and powerful remedy under the tolling rules below, and you should get a form filed immediately regardless. Filing is defined by § 5401(c): personal delivery, or receipt by first-class or certified mail. Hand-deliver and keep a date-stamped copy, or send it certified. An unsigned or partially completed form is a fight nobody needs.

One trap: an Application for Adjudication of Claim is not a substitute for the DWC-1 and does not start the 90 days.

What rebuts the presumption

Only evidence discovered after the 90-day period — and California courts read that strictly.

State Comp. Ins. Fund v. WCAB (Welcher) (1995) requires evidence "that could not have been obtained with the exercise of reasonable diligence within the 90-day period."

Williams v. WCAB (1999) 74 Cal.App.4th 1260 went further. A police sergeant's psychiatric claim was accepted and paid for nearly two years, then denied on supposedly new evidence. The court held the presumption applied even though the employer had initially accepted the claim and paid benefits, that there is no good-faith exception, and that evidence obtainable with reasonable diligence inside the window cannot rebut it. The line worth remembering: "Accepting a claim and paying benefits does not permit employers to place the claim on the back burner."

There is live litigation about medical opinions obtained after day 90 that rest on facts available before day 90. Panels have gone both ways. The practical point is that rebuttal evidence must clear two bars: it must be genuinely undiscoverable within the window with reasonable diligence, and it must be substantial evidence in its own right. Attacking the second is often easier than the first.

What the presumption does and does not do. It shifts the burden of proof on compensability — that the injury arose out of and occurred in the course of employment. It does not automatically resolve the extent of your disability, apportionment, or what the claim is worth.

The $10,000 you are owed while they decide

This is the most valuable and least-used provision in the entire delay period, and almost nobody is told about it.

Labor Code § 5402(c): "Within one working day after an employee files a claim form under Section 5401, the employer shall authorize the provision of all treatment, consistent with Section 5307.27, for the alleged injury and shall continue to provide the treatment until the date that liability for the claim is accepted or rejected. Until the date the claim is accepted or rejected, liability for medical treatment shall be limited to ten thousand dollars ($10,000)."

Read that again: within one working day of filing, treatment must be authorized — and it continues until the claim is accepted or denied, up to $10,000.

And § 5402(d) removes the insurer's excuse: providing that treatment creates no presumption of liability. They cannot claim that treating you is an admission.

An insurer that ignores § 5402(c) is exposed under § 5814 for unreasonably delaying a benefit, and may be liable for treatment you paid for yourself where its refusal amounted to neglect or refusal to provide care.

If you filed a claim form and were told to use your own health insurance, that was wrong. Ask for the § 5402(c) authorization in writing.

What you can live on while a claim is denied

EDD State Disability Insurance is the primary bridge. You can generally collect SDI while your comp claim is denied or delayed. If the claim is later accepted or won, EDD asserts a lien and is reimbursed out of the workers' compensation recovery — so it is a bridge, not a windfall, but it is real money now.

Group health insurance. If you have it, use it. Providers may bill it while liability is unresolved, and reimbursement gets sorted later.

The § 5402(c) advance, above.

Self-procured treatment. Sometimes reimbursable when the carrier neglected or refused to provide care — but fact-specific and worth asking about before you spend.

The defenses insurers actually use

Denial letters tend to be vague. These are the arguments underneath them.

Not arising out of and in the course of employment (AOE/COE). The general-purpose denial. Often means the adjuster has a records gap, not a defense.

The going-and-coming rule. Commuting is generally not covered — but the exceptions are broad: special missions, employer-provided or required vehicles, the commercial traveler rule, on-call duty, and the required-vehicle exception.

Independent contractor. Misclassification is common, especially in construction, delivery, and gig work. The label on the paperwork does not decide it.

Post-termination — LC § 3600(a)(10). A claim filed after you were fired or laid off is barred unless one of four exceptions applies: the employer had notice of the injury before termination; medical records existed before termination; the date of injury is after the notice of termination; or, for cumulative trauma and occupational disease, the § 5412 date of injury falls after termination. That last exception is why the cumulative-trauma date matters so much.

Psychiatric claims — LC § 3208.3. The thresholds are genuinely higher. You need a diagnosable disorder, and actual employment events must be the predominant cause — more than 50% of all causes combined. For victims of a violent act or direct exposure to one, the threshold drops to a "substantial cause," defined as 35–40%. There is a six-month employment requirement unless the injury was caused by a sudden and extraordinary employment condition — and "extraordinary" is narrow; in SCIF v. WCAB (Garcia) a fall from a 24-foot ladder was held sudden but not extraordinary for an avocado picker.

The most common psychiatric denial is the good-faith personnel action defense under § 3208.3(h). Rolda v. Pitney Bowes (WCAB en banc, 2001) sets the four-step analysis, and the defense is rebutted by showing the stressors were not personnel actions at all (harassment, assault, unsafe conditions, workload), or that the action was unlawful, or not in good faith, or not a substantial cause.

Intoxication, horseplay, willful misconduct, initial physical aggressor. Affirmative defenses — the employer bears the burden.

Pre-existing condition. Usually not a true defense. California compensates the aggravation of a pre-existing condition; the pre-existing component belongs in apportionment, not denial.

Statute of limitations. See below, and see the tolling rules — this defense fails more often than insurers expect.

Every deadline

Running against you

Running against the employer

The one that saves cases: tolling

Filing the DWC-1 tolls the § 5405 and § 5406 limitations periods until the claim is denied or becomes presumptively compensable (LC § 5401(d)). Tolling ends only on personal service of a compliant denial, or five days after mailing in California — and only if the denial notice complies with the benefit-notice regulations at 8 CCR § 9810 et seq.

And if your employer never gave you a claim form or the required notices, the statute may not have run at all. In Reynolds v. WCAB (1974) 12 Cal.3d 726, a worker had a heart attack loading timbers, was off work about a year, paid his own bills, and learned about workers' compensation almost three years later from a relative. The Supreme Court held: "Since PG&E was obligated to give the notices prescribed by the administrative rules and failed to do so, it may not raise the technical defense of the statute of limitations to defeat petitioner's claim."

Kaiser Foundation Hospitals v. WCAB (Martin) (1985) 39 Cal.3d 57 refined it into the modern rule: the period is tolled for as long as the worker remains unaware of the right to compensation. The employer defeats tolling only by proving you had actual knowledge.

This is not a historical curiosity. In Petarra v. Azusa Unified School District (WCAB panel, February 26, 2026), a DWC-1 filed more than eighteen months after the injury survived, because the employer had breached its duty to provide the form and could not show the worker had actual knowledge of her rights.

Also: under LC § 5408, no limitations period runs against a minor or an incompetent person until a guardian, conservator, or trustee is appointed.

Cumulative trauma is different

For cumulative trauma and occupational disease, the date of injury under LC § 5412 is the date you first suffered disability and knew, or reasonably should have known, that the disability was work-caused — whichever happens later.

"Disability" means actual compensable disability — time off, modified duty, restrictions, wage loss, or ratable impairment. Not merely symptoms. Knowledge usually means a physician told you the condition was industrial.

A worker sore for years who never missed work, never had restrictions, and was never told the condition was work-related may have a date of injury years after the exposure ended — and even after the job ended. That single date restarts the one-year clock, restarts the five-year clock, allocates liability among successive employers, and can defeat the post-termination defense entirely.

What happens after a denial

1. File an Application for Adjudication of Claim with the WCAB. This opens the case and gets you a case number and a judge.
2. The defendant answers, pleading its defenses. A statute of limitations defense not pleaded is generally waived.
3. Develop the medical-legal record — usually a panel QME on the compensability question under LC § 4060. See our QME page for every deadline in that process.
4. File a Declaration of Readiness to Proceed when the record is ready.
5. Expedited hearing, where available, or Mandatory Settlement Conference, then trial.

Realistically, a contested compensability case runs many months from denial to decision, and the medical-legal development is usually the long pole. That is worth knowing at the start rather than discovering at month nine.

What a wrongful denial is actually worth

We are going to be straight about this, because the internet is not.

Labor Code § 5814 increases unreasonably delayed or refused compensation by up to 25% or up to $10,000, whichever is less. Before the 2004 reform, § 5814 imposed a flat 25% on the entire class of benefit delayed — a genuinely punishing remedy. It no longer does. The current statute is capped, applies only to the amount actually delayed, is extinguished by an unqualified settlement, and must be pursued within two years.

And the standard is hard. Under Kerley v. WCAB (1971) 4 Cal.3d 223, delay is not unreasonable where the employer had genuine doubt from a medical or legal standpoint. In Rader v. Ticketmaster (WCAB significant panel decision, January 8, 2026), the Board ordered reimbursement of improperly withheld indemnity with interest but denied penalties, because the defendant's legal position had been persuasive enough that the trial judge initially accepted it.

The lesson: a defendant that loses a genuine legal argument almost never pays a penalty. The strong § 5814 cases are failure-to-investigate cases — no documented investigation, a denial with no medical opinion behind it, a § 5402(c) authorization never issued, benefit notices never sent.

Two provisions with real teeth:

LC § 4650(d) adds an automatic 10% to any late temporary or permanent disability payment. No showing of unreasonableness is required — it is strict liability for lateness, and it is supposed to be self-imposed without you asking. It very often is not. In 2024 the DWC Audit Unit cited 588 violations for late first TD payments and 452 for late subsequent indemnity payments in audited files alone. Audit the payment ledger.

LC § 5414.3 — the SB 1127 super-penalty. For claims within the §§ 3212–3213.2 presumptions, an unreasonable rejection carries five times the delayed benefits, up to $50,000. That is a different order of magnitude, and it applies to firefighters, peace officers, and other qualifying public safety personnel.

What no California penalty provision does: create a civil bad-faith cause of action. § 5814(f) says so expressly. Anyone promising you a bad-faith lawsuit against a comp carrier in California is describing a different state's law.

What to do the day you are denied

1. Find the date you filed your DWC-1 and count 90 days. (75 if you are a firefighter, peace officer, or other worker covered by the §§ 3212–3212.85 and 3212.9–3213.2 presumptions.) If the rejection came after that window, say so immediately and in writing.
2. Read the letter for what it actually says — is this a denial or a delay? They are not the same and the letter may not be clear.
3. Get your § 5402(c) treatment authorization in writing if you have not already. Up to $10,000, owed within one working day of filing.
4. Apply for EDD State Disability Insurance. Do it now; there is a lien later, but you need income now.
5. File the Application for Adjudication of Claim. It opens the case and preserves your position.
6. Collect the paper — the claim form with its date, every benefit notice, every letter, the envelopes, your medical records, and your pay records.
7. Write down the date and the name of every person who told you anything, and what they said.
8. If you were never given a claim form, say so. That fact alone may mean the statute of limitations never started running against you.

Frequently asked questions