Comparative Negligence

Comparative negligence is a legal doctrine used to allocate fault and reduce damages in personal injury cases where both the plaintiff and the defendant share some degree of responsibility for the accident. Under comparative negligence rules, a jury or court determines the percentage of fault attributable to each party, and the plaintiff's damages award is reduced by their proportionate share of fault. Most states have adopted some form of comparative negligence as a replacement for the older and harsher contributory negligence doctrine.

There are two main types of comparative negligence: pure comparative negligence and modified comparative negligence. Under the pure comparative negligence rule — followed by about thirteen states — a plaintiff can recover damages even if they are 99 percent at fault, though their recovery is reduced by their fault percentage. Under modified comparative negligence — the more common approach — a plaintiff can only recover if their fault does not exceed a threshold, typically either 50 percent or 51 percent depending on the state.

In practice, comparative negligence determinations often hinge on the specific facts of the accident and the credibility of the parties and witnesses. For example, in a car accident case, the jury might find the defendant 70 percent at fault for running a red light and the plaintiff 30 percent at fault for speeding. If the plaintiff's total damages were $100,000, their recovery would be reduced to $70,000. Defense attorneys routinely attempt to shift as much fault as possible to the plaintiff to minimize the defendant's liability.

Comparative negligence can also apply in slip and fall cases, product liability claims, and medical malpractice cases where the patient's own actions contributed to their harm. The doctrine reflects a broader public policy principle that defendants should not bear 100 percent of the financial burden for accidents they did not entirely cause. Understanding how comparative negligence works in a specific jurisdiction is essential for evaluating the true value of a personal injury claim.