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✦ Certified Specialist in Workers’ Compensation Law — Certified by the State Bar of California, Board of Legal Specialization ✦
Serving injured workers across California. Board-certified specialist; no fee unless we win.
By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization
In California, Labor Code §3600 is the no-fault rule — workers' compensation covers injuries that arise out of (AOE) and occur in the course of (COE) employment, without regard to the employer's negligence or the worker's contributory fault. The §3600 AOE/COE test is the gateway to every California comp claim.
California Labor Code §3600 establishes the no-fault foundation of California workers' compensation. Under §3600, every injury that arises out of (AOE) and occurs in the course of (COE) employment is compensable — without regard to the employer's negligence or the worker's contributory fault. The §3600 California rule is the grand bargain: the worker gives up the right to sue the employer in tort (the California Labor Code §3601 exclusive-remedy bar) in exchange for statutory medical and indemnity benefits without having to prove fault. The §3600 California AOE/COE test is the gateway question that determines whether any particular injury is even covered by the comp system.
Under California Labor Code §3600, an injury "arises out of" California employment when there is a causal connection between the work and the injury — when the employment exposed the worker to the risk that caused the injury. The §3600 California AOE prong looks at whether the conditions, equipment, environment, or tasks of the work were a contributing cause of the injury. A repetitive lifting task that produces a lumbar strain "arises out of" the work; a personal-life accident that happened to occur during work hours generally does not. The §3600 California AOE causation analysis is broader than tort proximate cause — any work contribution suffices.
Under California Labor Code §3600, an injury occurs "in the course of" California employment when it happens during a time, at a place, and while doing a task that is reasonably related to the employment. The §3600 California COE prong looks at the when, where, and what — was the worker on the clock, at a work-relevant location, performing a task reasonably within employment? The §3600 California COE analysis can extend to lunch breaks on-premises, employer-required travel, and certain employer-sponsored activities. The "going and coming" rule generally excludes ordinary commuting, with exceptions.
Under California Labor Code §3600, the California employer can defeat AOE/COE coverage by showing one of the statutory bars: the injury was intentionally self-inflicted, the injury was the result of the worker's intoxication, the injury occurred during the worker's voluntary participation in off-duty recreational activity not reasonably expected to be part of employment, or the injury was caused by the worker's commission of a felony. The §3600 California defenses are narrow and the burden is on the employer; the no-fault rule normally favors coverage unless one of the statutory bars clearly applies.
Under California Labor Code §3600 (AOE/COE), California Labor Code §3601 (exclusive remedy), and California Labor Code §3208.1 (cumulative trauma), the California no-fault framework operates as a system. The §3600 California AOE/COE test decides whether the injury is even covered by comp; California Labor Code §3601 bars the worker from suing the employer in tort when comp covers; and California Labor Code §3208.1 extends AOE/COE to cumulative-trauma injuries developed over repetitive exposure (with the California Labor Code §5412 date-of-injury rule governing when CT claims accrue). Each California layer presupposes the §3600 AOE/COE gateway is satisfied.
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Tap to call →Last reviewed by Eman Yazdchi, Esq., May 2026.
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