The one-line version: a psychiatric injury caused by work is compensable in California — the statute says so in its first sentence — but the Legislature deliberately built a higher threshold for these claims than for a broken wrist, and most of what goes wrong for people goes wrong at one of five specific places.¹ This page is those five places.

1. Six months with that employer

No compensation is paid for a psychiatric injury unless you have been employed by that employer for at least six months.² The six months need not be continuous, and a new job restarts the clock. There is exactly one statutory way out: the bar "shall not apply if the psychiatric injury is caused by a sudden and extraordinary employment condition."²

Courts read "extraordinary" narrowly, and — this is the part that surprises people — how badly you were hurt is not the test. The Court of Appeal has said in terms that the statute "does not include the nature of the injuries resulting from an incident as a basis for the exception," and denied the exception to a worker who fractured his pelvis slipping on a rain-slicked walkway 74 days into the job.³ An unsecured store shelf collapsing on someone did qualify; a fall from a 24-foot ladder while picking avocados did not.³ The question is whether the event was uncommon, unusual and unexpected for that work — and the burden of proving it is yours.³

2. "Predominant cause" — and the number that is not in the statute

You must show, by a preponderance of the evidence, that actual events of employment were predominant as to all causes combined.⁴ Note what that compares: work against everything else added together — the divorce, the money, the childhood, the illness.

The statute assigns no percentage to "predominant." The familiar "more than 50%" comes from a published Court of Appeal decision, not from the Legislature.⁵ The only percentage the Legislature actually wrote is for a different track: if your injury resulted from being the victim of a violent act, or direct exposure to a significant violent act, the test drops to "substantial cause," which the statute defines as at least 35 to 40 per cent of causation from all sources combined.⁴ If violence is anywhere in your facts, that distinction is worth more than any other sentence on this page.

3. The personnel-action defence, and its limits

No compensation is paid if the injury was substantially caused by a lawful, nondiscriminatory, good faith personnel action — and the statute puts the burden of proof on the party asserting it, which is the employer.⁶ All three adjectives have to hold. An action that was unlawful, or discriminatory, or taken in bad faith is not a defence at all, and "substantially caused" here means the same 35 to 40 per cent defined earlier in the section.⁶

The Appeals Board decides this in four steps, sitting en banc: were there actual events of employment; were they the predominant cause (a medical question); were any of those events lawful, nondiscriminatory, good faith personnel actions; and if so, were those actions a substantial cause of the injury.⁷ Two details worth carrying into a lawyer's office: the defence has been held to reach physical symptoms that flow solely from the psychological injury,⁸ and the statute itself declares that issuing frequent notices of termination or layoff is a bad faith personnel action.⁹

4. If you were already on the way out

Where the claim is filed after notice of termination or layoff, and is for an injury occurring before that notice, nothing is paid unless you prove predominant causation and at least one of five conditions: the injury was caused by sudden and extraordinary events; the employer already had statutory notice of the psychiatric injury before the termination notice; your medical records predating the notice show treatment for it; a trier of fact — contractual, administrative, regulatory or judicial — finds sexual or racial harassment; or the date of injury falls after the notice but before the termination takes effect.¹⁰

That third condition is the reason to see someone and have it written down while you are still employed, even if you are not ready to file anything. And a notice of termination not followed by termination within 60 days does not trigger this bar at all.⁹

5. Getting the therapy authorized — where these claims are actually lost

Day one. Your employer must give you a claim form (DWC-1) within one working day of learning of an injury needing more than first aid.¹¹ A claim form is "filed" when you hand it to the employer or it arrives by mail — and filing it tolls the statute of limitations until the claim is denied or becomes presumptively compensable.¹¹

Within one working day of your filing, the employer must authorize treatment and keep providing it until the claim is accepted or rejected, with liability capped at $10,000 in the meantime.¹² That treatment still has to be consistent with the state treatment guidelines, and providing it creates no presumption that the employer is liable.¹²

The trap. Most treatment in the first 30 days skips prospective utilization review. Psychological and psychiatric services are expressly excluded from that exemption — including diagnostic services, psychotherapy and psychiatric medication.¹³ So your therapy goes through review from the first request, when a physical injury's physical therapy would not.

The clocks. A prospective or concurrent review decision must come within five normal business days of the request and supporting information, and in no event more than 14 days from the treating physician's recommendation; expedited review, where there is an imminent and serious threat, is 72 hours; retrospective review is 30 days.¹⁴ A denial stays effective for 12 months — unless a further request is supported by a documented change in the facts underlying it, which a worsening of your condition can be.¹⁵

If it is denied. A utilization review decision can be challenged only by Independent Medical Review, and you have 30 days from service of the decision to apply (10 days for a drug-formulary dispute).¹⁶ The employer pays for it — $375, and nothing from you.¹⁷ Two things that cost people the right: if the denial letter did not include the IMR application form, the clock does not start;¹⁶ and the internal appeal that claims administrators now offer is voluntary and does not extend the 30 days, so file the IMR application anyway.¹⁸ IMR decides within 30 days, or three days where the case is expedited, and a tie goes in favour of providing the service.¹⁹

And if IMR says no. Be clear-eyed: the determination is binding, presumed correct, and can be set aside only on clear and convincing proof of one of five narrow grounds — and no judge, no Appeals Board and no higher court may substitute its own view of medical necessity.²⁰ Winning an appeal sends the file to a different reviewer, not to a courtroom.

(This is not the same IMR as the free one for health-plan denials. If your care is being denied by an ordinary insurer rather than a workers' comp administrator, that is a different process with a better success rate →)

Who is allowed to treat you, and who is not

A psychiatrist and a qualifying doctoral-level psychologist count as "physicians" in this system: they can be your primary treating physician, request authorization, and write the reports that decide disability.²¹ Marriage and family therapists, professional clinical counsellors and clinical social workers may treat you — but only on referral from a licensed physician and surgeon, with the employer's approval, and the statute says plainly that they may not determine disability.²² If the employer has refused to authorise any treatment for the condition, the same section preserves reimbursement for care you procure yourself.²² You may always consult a physician at your own expense, though that report alone cannot be the basis of an award.²³

One myth worth killing: the 24-visit cap applies to chiropractic, occupational therapy and physical therapy. Psychotherapy is not on that list.²⁴

Deadlines

  • 90 days. If liability is not rejected within 90 days of the claim form being filed, the injury is presumed compensable, rebuttable only by evidence discovered after that period.²⁵ For the first-responder categories, it is 75 days.²⁵
  • One year to commence proceedings, from the date of injury or the last date benefits were provided.²⁶ For a cumulative psychiatric injury — which most stress claims are — the date of injury is when you first suffered disability and knew, or reasonably should have known, that it was caused by work. Both prongs.²⁷ The clock usually does not start on the day the stress did.

First responders and PTSD

For listed firefighters and peace officers, PTSD is presumed to arise out of employment, and the presumption extends after service ends by three months per year of service, up to 60 months.²⁸ As of 1 January 2026 the list also covers active firefighting members serving an FAA Part 139 commercial airport.²⁸ Three honest limits: the presumption is disputable; the six-month service requirement still applies; and the section sunsets on 1 January 2029.²⁸ Public safety dispatchers are not covered — the Legislature ordered a study of their claims, not a presumption.²⁸

Do this: file the DWC-1 even if you are unsure, because filing is what starts the 90-day clock and tolls the limitations period. Ask your treating physician to send a written request for authorization with the supporting records rather than a phone call, and diary five business days from it. If a denial arrives, check the envelope for the IMR application form and file within 30 days regardless of any internal appeal. And if the events involved violence, say so in the first sentence you give anyone — it changes the legal test that applies to your case.

Sources

  1. Labor Code §3208.3(a): "A psychiatric injury shall be compensable if it is a mental disorder which causes disability or need for medical treatment," diagnosed under the procedures of §139.2(j)(4) or the DSM or comparable manuals; §3208.3(c): "It is the intent of the Legislature in enacting this section to establish a new and higher threshold of compensability for psychiatric injury under this division" — leginfo.legislature.ca.gov.
  2. Labor Code §3208.3(d).
  3. Travelers Casualty & Surety Co. v. Workers' Comp. Appeals Bd. (Dreher) (2016) 246 Cal.App.4th 1101, No. A146538, certified for publication, read on the official California Courts opinion archive — courts.ca.gov. Adopting Matea v. WCAB (2006) 144 Cal.App.4th 1435: an extraordinary employment condition is "something other than a regular and routine employment event or condition, that is, that the event was uncommon, unusual, and occurred unexpectedly." The avocado-ladder comparison is State Comp. Ins. Fund v. WCAB (Garcia) (2012) 204 Cal.App.4th 766, discussed in Dreher.
  4. Labor Code §3208.3(b)(1)–(3).
  5. Department of Corrections v. Workers' Comp. Appeals Bd. (Garcia) (1999) 76 Cal.App.4th 810, 816 — "predominant as to all causes" requires that the work-related cause have "greater than a 50 percent share of the entire set of causal factors," quoted in Appeals Board decisions posted by the Department of Industrial Relations. The figure is judicial, not statutory.
  6. Labor Code §3208.3(h). "Substantial cause" carries the §3208.3(b)(3) definition, which applies "[f]or the purposes of this section."
  7. Rolda v. Pitney Bowes, Inc. (2001) 66 Cal.Comp.Cases 241, Workers' Compensation Appeals Board en banc — dir.ca.gov. An en banc Board decision binds workers' compensation judges and Board panels; it is not appellate precedent.
  8. County of San Bernardino v. Workers' Comp. Appeals Bd. (McCoy) (2012) 203 Cal.App.4th 1469.
  9. Labor Code §3208.3(g).
  10. Labor Code §3208.3(e)(1)–(5). The five conditions are in addition to, not instead of, the predominant-cause showing.
  11. Labor Code §5401(a), (c) and (d) — the one-working-day duty to provide the form, when a claim form is deemed filed, and the tolling of §§5405 and 5406 until denial or presumptive compensability. Form DWC 1 — dir.ca.gov.
  12. Labor Code §5402(c)–(d).
  13. Labor Code §4610(b)–(c), which exempts some treatment in the first 30 days from prospective review but excludes "(3) Psychological treatment services"; 8 CCR §9792.9.7(b)(3), operative 1 April 2026, which spells out that the exclusion covers "[p]sychological or psychiatric treatment services, which includes diagnostic services, psychotherapy, and other services or procedures … and including psychiatric pharmaceuticals" — dir.ca.gov.
  14. Labor Code §4610(i)(1)–(4); 8 CCR §9792.9.3, operative 1 April 2026 — dir.ca.gov.
  15. Labor Code §4610(k).
  16. Labor Code §4610.5(e) ("A utilization review decision may be reviewed or appealed only by independent medical review"), (h)(1)(A)–(B) (10 days for formulary disputes, 30 days for all others) and (h)(3) (the time limitations "shall not begin to run" where the employer failed to provide the required notice) — leginfo.legislature.ca.gov.
  17. Labor Code §4610.6(l): the costs "shall be borne by employers." The current fee is $375 for a standard or expedited review — Division of Workers' Compensation, dir.ca.gov.
  18. 8 CCR §9792.10.1(f) (voluntary internal appeal, requested within 10 days, determination within 30) and §9792.9.5(e)(13), which requires the denial letter to state that the internal process "is a voluntary process that neither triggers nor bars use of" the statutory dispute-resolution procedures — dir.ca.gov.
  19. Labor Code §4610.6(a) (review "limited to an examination of the medical necessity"), (d)(1)–(2) and (e) (an even split is decided "in favor of providing the service"). If a denial is overturned, services not yet rendered must be authorised within five working days and reimbursement made within 20 days — §4610.6(j).
  20. Labor Code §4610.6(g)–(i).
  21. Labor Code §3209.3(a)–(c). A "psychologist" here means one holding a doctoral degree who also has at least two years of clinical experience in a recognised health setting or meets the National Register standards — leginfo.legislature.ca.gov.
  22. Labor Code §3209.8. Labor Code §4600(a) separately lists licensed clinical social worker treatment among what the employer must provide.
  23. Labor Code §4605. Note also §4610.5(e): neither side is liable for treatment furnished without authorisation where a utilization review decision denied it, unless IMR overturns that decision.
  24. Labor Code §4604.5(c)(1) — the 24-visit caps apply to chiropractic, occupational therapy and physical therapy. Psychotherapy is governed by the Medical Treatment Utilization Schedule, which since 1 April 2026 incorporates the ACOEM Workplace Mental Health Guideline — 8 CCR §9792.23.8.
  25. Labor Code §5402(b)(1)–(2). The 75-day rule applies to the injuries and illnesses defined in §§3212–3212.85 and §§3212.9–3213.2, which includes the first-responder PTSD presumption at §3212.15.
  26. Labor Code §5405.
  27. Labor Code §5412.
  28. Labor Code §3212.15(a)–(g), as amended by SB 230 (Stats. 2025, Ch. 404), effective 1 January 2026 — leginfo.legislature.ca.gov. Subdivision (f)(2) directs a study of dispatcher and telecommunicator claims; dispatchers are not listed in subdivision (a).

All statutes and regulations read on the operative text on 18 August 2026. This page describes the law; it is not legal advice, and workers' compensation turns hard on facts and dates. Most workers in this system are represented, and the fee comes out of the award rather than your pocket.

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