8.2 Defenses, Damages, and Vicarious Liability
Key Takeaways
- Comparative negligence reduces recovery by the plaintiff's fault; modified rules bar recovery once the plaintiff crosses a 50% or 51% threshold.
- Contributory negligence bars all recovery for any plaintiff fault; assumption of risk and last clear chance are additional defenses.
- Compensatory damages (special = economic, general = non-economic) are covered; punitive damages are often excluded or barred by state law.
- Vicarious liability — chiefly respondeat superior — makes employers liable for employees' in-scope negligence.
- Principals are generally not vicariously liable for independent contractors, driving the use of additional-insured endorsements like CG 20 10.
Defenses, Damages, and Vicarious Liability
Once a negligence claim is on the table, the defense pushes back and the court measures what is owed. Liability underwriters price for both the frequency of claims and the severity of the damages awarded. This section covers the standard defenses, the categories of damages a liability policy must pay, and the doctrine of vicarious liability that pulls employers and principals into claims they did not personally cause.
Common-law defenses to negligence
Several defenses can reduce or wipe out a negligence award. The most heavily tested are comparative and contributory negligence, which differ sharply in their harshness.
- Comparative negligence — the award is reduced by the claimant's percentage of fault. Under pure comparative, a 90%-at-fault plaintiff still recovers 10%; under modified comparative (the 50%/51% bar most states use), recovery stops once the plaintiff is more at fault than the defendant.
- Contributory negligence — the harsh older rule: any fault, even 1%, bars all recovery. Only a few states still use it.
- Assumption of risk — a claimant who knowingly accepted a danger (a spectator hit by a foul ball) cannot recover.
- Last clear chance — lets a negligent plaintiff recover if the defendant had the final opportunity to avoid harm.
Worked example: comparative negligence
A jury sets total damages at $100,000 and finds the injured plaintiff 30% at fault.
- Pure comparative: recovery = $100,000 × (1 − 0.30) = $70,000.
- Modified comparative (51% bar): plaintiff is below the bar, so recovery is still $70,000.
- If the plaintiff were 60% at fault under a 51% bar: recovery = $0; under pure comparative: $100,000 × 0.40 = $40,000.
Exam trap: pure vs. modified only diverges once the plaintiff crosses the 50/51% threshold.
Categories of damages
| Damage type | What it pays | Liability coverage |
|---|---|---|
| Special (compensatory – special) | Quantifiable economic loss: medical bills, lost wages | Covered |
| General (compensatory – general) | Non-economic: pain and suffering, disfigurement | Covered |
| Punitive (exemplary) | Punishes egregious conduct; not tied to actual loss | Often excluded or barred by state law |
| Nominal | Token sum recognizing a right was violated | Rarely relevant to coverage |
Compensatory damages make the claimant whole and split into special (economic) and general (non-economic). Punitive damages punish the wrongdoer; many states bar insuring them as against public policy — a classic exam point.
Vicarious liability
Vicarious liability holds one party responsible for another's negligent acts based on the relationship between them, even though the first party did nothing wrong. The main doctrine is respondeat superior ("let the master answer"): an employer is liable for an employee's negligence committed within the scope of employment. Other examples include a parent for a minor, a principal for an agent, and an auto owner who lends a car under permissive-use and family-purpose rules.
Why vicarious liability matters to coverage
The CGL automatically extends to the named insured's liability arising from employees' acts within the scope of employment, which is the practical reach of respondeat superior. Independent contractors are different — a principal is generally not vicariously liable for a true independent contractor's negligence, which is why businesses require contractors to carry their own insurance and to name the business as an additional insured (ISO endorsement CG 20 10 for ongoing operations).
Statutes of limitations and immunities
Defenses are not only about fault. A statute of limitations bars a claim filed too late — typically two to three years for negligence, measured from injury or discovery. Certain parties enjoy immunity: governmental entities (sovereign immunity, often partially waived by tort-claims acts) and, historically, charities. The exam point: even a meritorious claim fails if it is time-barred or aimed at an immune defendant, which is why prompt claim reporting in the policy's duty after loss conditions protects the insurer's ability to assert these defenses.
Joint and several liability
When multiple defendants share fault, joint and several liability lets the plaintiff collect the entire judgment from any one defendant, regardless of that defendant's percentage of fault. A defendant 20% at fault could be forced to pay 100% of a $1,000,000 award if co-defendants are insolvent, then seek contribution from the others. Many states have modified or abolished this rule in favor of several-only liability (each pays only its share). This doctrine drives why a deep-pocket business is a frequent target and why adequate liability limits matter.
A jury awards $200,000 in total damages and finds the plaintiff 40% at fault. The accident occurred in a state using a 51% modified comparative negligence rule. How much does the plaintiff recover?
An employer is sued because a delivery driver negligently rear-ended another car while making company deliveries. Under which doctrine is the employer held liable for the driver's negligence?
Comparative vs. Contributory Negligence - A Worked Comparison
The defense doctrine a state follows determines how much an injured plaintiff recovers when partly at fault, and the exam expects you to compute the result.
| Doctrine | Rule | Plaintiff 30% at fault on $100,000 |
|---|---|---|
| Pure contributory | Any plaintiff fault bars all recovery | $0 |
| Pure comparative | Recover minus own % (even if 99% at fault) | $70,000 |
| Modified (50% bar) | Recover only if 50% or less at fault | $70,000 |
| Modified (51% bar) | Recover only if less than 51% at fault | $70,000 |
Worked example: in a pure comparative state, a plaintiff with $100,000 in damages found 30% responsible recovers 70% x $100,000 = $70,000. In a strict contributory negligence state, that same 30% fault bars the entire claim.
Exam Trap: Vicarious liability holds one party responsible for another's negligence without personal fault - an employer for an employee acting in the scope of employment (respondeat superior), or a vehicle owner for a permissive driver. This is why a CGL or auto policy must respond to claims arising from others' conduct.