8.2 Defenses, Damages, and Vicarious Liability

Defenses to a Negligence Claim

A defendant who is sued can defeat or reduce liability with established legal defenses. The negligence-of-the-plaintiff doctrines are the most heavily tested.

Worked example (comparative): A jury awards $100,000 but finds the plaintiff 30% at fault. Under pure comparative negligence the plaintiff collects $70,000 ($100,000 x 0.70). Under pure contributory negligence, the same plaintiff collects $0 because they share fault.

Trap: Only a handful of states still use pure contributory negligence. Watch the exact wording — 'contributory' bars recovery, 'comparative' merely reduces it.

Categories of Damages

Special damages are objectively measurable; general damages compensate intangible harm. Punitive damages punish the wrongdoer and deter others — and many states prohibit insuring them as contrary to public policy, so a standard liability policy may not pay them.

Split-Limit Worked Example

An auto liability policy reads $100,000 / $300,000 / $50,000 (BI per person / BI per accident / PD per accident). In one accident the insured injures three people — claims of $120,000, $90,000, and $40,000 — and causes $60,000 in property damage.

• Person 1: capped at the $100,000 per-person BI limit (the $120,000 claim is reduced).
• Persons 2 and 3: paid $90,000 and $40,000 in full.
• BI subtotal = $230,000, within the $300,000 per-accident cap.
• Property damage: capped at $50,000 (the $60,000 claim is reduced).

Insurer pays $280,000; the insured personally owes the remaining $30,000.

Vicarious Liability (Respondeat Superior)

Vicarious liability holds one party responsible for the negligent acts of another because of their relationship. The classic doctrine is respondeat superior ('let the master answer') — an employer is liable for the negligence of an employee committed within the scope of employment.

Other common vicarious-liability relationships:

• Principal–agent — a principal answers for an agent acting within authority.
• Parent–minor child (by statute in many states) and vehicle owner–permissive driver.
• A business is not ordinarily vicariously liable for an independent contractor, which is why contractors must carry their own coverage and are added as additional insureds by endorsement.

Voluntary Payment Restriction

Liability policies bar the insured from voluntarily assuming an obligation, admitting fault, or making a payment (other than first aid) without the insurer's consent. An insured who settles or apologizes admitting liability can forfeit coverage for that claim — a recurring exam point tied to the cooperation condition.

Last Clear Chance and Assumption of Risk

Two doctrines refine the fault analysis:

• Last clear chance — even a contributorily negligent plaintiff may recover if the defendant had the final opportunity to avoid the harm and failed to take it. This softens the harsh contributory-negligence bar.
• Assumption of risk — a plaintiff who voluntarily and knowingly accepts a known danger (e.g., a spectator hit by a foul ball at a ballpark) cannot recover. The exam tests whether the risk was both known and voluntarily accepted.

Why Damage Categories Matter to Pricing

Underwriters separate economic (special) damages, which are predictable from medical and wage data, from non-economic (general) damages, which are volatile and jury-driven. Punitive awards are the most unpredictable and, where insurable at all, drive excess and umbrella pricing. Because many states forbid insuring punitive damages, an insured facing a punitive award may have to pay it personally even with a high liability limit.

Comparing the Negligence Defenses Side by Side

The single most-tested liability concept is how a plaintiff's own fault affects recovery. Lock in the four systems:

Quick Answer: 'Contributory' bars recovery for any plaintiff fault; 'comparative' merely reduces it. Under a 50%/51% modified rule the plaintiff loses everything once fault reaches the threshold.

Immunities and Other Bars to Recovery

Several special doctrines can defeat or limit a liability claim and surface as distractors:

• Statute of limitations — a suit filed after the legal deadline is barred entirely, regardless of merit.
• Sovereign/governmental immunity — limits claims against government bodies (often capped by tort-claims acts).
• Charitable and intra-family immunities — historically limited suits against charities or between family members (now narrowed in many states).
• Workers compensation exclusive remedy — an injured employee's sole remedy against the employer is WC benefits, barring most negligence suits against the employer.

The Collateral Source Rule

Under the traditional collateral source rule, a defendant generally cannot reduce the damages it owes just because the injured plaintiff received payment from an independent source such as the plaintiff's own health or auto insurer. The wrongdoer pays the full damages; the plaintiff's insurer then recovers what it paid through subrogation, so the plaintiff is made whole only once. This rule explains why a victim's own coverage does not let the negligent party off the hook, a relationship examiners pair with subrogation questions.