3.2 California General Liability Insurance

Pure Comparative Negligence

The defining feature of California tort law is pure comparative negligence, adopted by the California Supreme Court in Li v. Yellow Cab Co. (1975). Before Li, California followed strict contributory negligence: a plaintiff even slightly at fault recovered nothing. Li replaced that harsh rule with a sliding scale.

Under pure comparative negligence, a plaintiff's damages are reduced by their own percentage of fault, but recovery is never barred no matter how high that percentage. A plaintiff found 99% at fault can still collect 1% of their proven damages. This distinguishes California from modified comparative states, which cut off recovery at a 50% or 51% fault threshold.

Proposition 51 and Allocation of Fault

When multiple defendants share fault, California splits liability under Proposition 51 (Civil Code 1431.2), passed in 1986. The rule depends on the type of damages:

• Economic damages (medical bills, lost wages, repair costs) remain joint and several. A plaintiff may collect 100% of economic damages from any one defendant, who then seeks contribution from the others. This protects plaintiffs when a co-defendant is insolvent.
• Non-economic damages (pain and suffering, emotional distress) are several only. Each defendant pays only their own proportionate share. A defendant 20% at fault pays exactly 20% of the non-economic award and no more.

This economic-vs-non-economic split is heavily tested. The practical effect: a 'deep-pocket' defendant can be stuck with all of the medical bills but only its slice of the pain-and-suffering award. Proposition 51 was enacted to ease the burden on minimally responsible 'deep-pocket' defendants who, under the old joint-and-several rule, could be forced to pay an entire pain-and-suffering verdict despite minor fault. The economic-damages carve-out preserves full recovery of out-of-pocket losses for genuinely injured plaintiffs.

Statutes of Limitations

Liability claims must be filed within statutory deadlines or they are barred. Key California limits a P&C producer should know:

How Liability Coverage Responds

A commercial general liability (CGL) or personal liability policy promises two things: to pay sums the insured becomes legally obligated to pay as damages for covered bodily injury or property damage, and to defend the insured against suits seeking those damages. In California, the duty to defend is broader than the duty to indemnify: an insurer must defend whenever the claim potentially falls within coverage, even if it ultimately proves groundless, false, or fraudulent. Wrongful refusal to defend can expose the insurer to bad-faith liability beyond policy limits.

California liability rates—commercial and personal—are subject to Proposition 103 prior-approval regulation. Insurers must file rates with the Department of Insurance and obtain approval before use, and consumer intervenors may challenge proposed increases. Punitive damages under Civil Code 3294 require clear and convincing evidence of oppression, fraud, or malice, and standard liability policies typically exclude coverage for them as a matter of public policy.

Occurrence vs. Claims-Made and Specialty Lines

Liability policies sold in California are written on one of two trigger forms, and the difference is frequently tested:

• An occurrence policy covers injury or damage that happens during the policy period, no matter when the claim is later reported—even years afterward.
• A claims-made policy covers only claims first made during the policy period (or an extended reporting 'tail'), and usually applies a retroactive date that excludes injuries occurring before it.

Several California liability lines carry their own statutory rules. Professional liability (errors-and-omissions and medical malpractice) is regulated for licensed professions; the Medical Injury Compensation Reform Act (MICRA) caps medical-malpractice non-economic damages, with the cap rising on a legislated schedule under the 2022 reforms. Pollution and environmental impairment liability is typically excluded from standard CGL forms and must be insured separately, and California requires specific disclosure of pollution coverage limitations.

The good-faith claims-handling duty—rooted in cases such as Comunale and Crisci—obligates a liability insurer to settle within limits when a reasonable insurer would, exposing it to bad-faith damages beyond the policy limit if it unreasonably refuses.

Negligence Elements and Damages

Every California liability claim the policy responds to is built on the four elements of negligence: (1) a duty of reasonable care owed to the plaintiff, (2) breach of that duty, (3) causation—both actual ('but-for') and proximate—linking the breach to the harm, and (4) actual damages. If any element fails, there is no liability and the policy owes nothing. Damages divide into economic (medical expenses, lost earnings, repair costs—objectively calculable), non-economic (pain, suffering, emotional distress), and, in egregious cases, punitive damages meant to punish rather than compensate.

A liability policy indemnifies compensatory damages the insured is legally obligated to pay but, as noted, generally excludes punitive damages. Understanding which bucket a damage award falls into drives both the Proposition 51 allocation and the policy's indemnity obligation.