The Four Elements of Negligence: Duty, Breach, Causation, Damages (1L Torts)

To win a negligence claim, a plaintiff must prove four elements: duty, breach, causation, and damages. Miss any one and the claim fails — which is why a negligence answer should march through them in order.

Causation is often split into two sub-parts (actual cause and proximate cause), so you'll sometimes see negligence described as having five elements. The substance is the same; it's just a matter of how finely you slice causation.

Duty asks whether the defendant owed the plaintiff a legal obligation to act with care. The general rule is that everyone owes a duty of reasonable care to foreseeable plaintiffs — people who could foreseeably be harmed by the defendant's conduct.

The famous fight over the scope of duty is Palsgraf v. Long Island Railroad. Cardozo's majority limited duty to plaintiffs within the foreseeable "zone of danger," while Andrews's dissent argued that a duty is owed to anyone in fact harmed. Most courts follow Cardozo's foreseeable-plaintiff approach.

Watch for special situations that change the default. There's generally no duty to rescue a stranger, but duties can arise from special relationships (innkeeper-guest, common carrier-passenger), from creating the peril, or from voluntarily undertaking a rescue. Landowner duties also vary with the entrant's status in many jurisdictions.

Breach is the failure to meet the applicable standard of care — usually what a reasonably prudent person would have done under the circumstances. It's an objective standard: the defendant's good intentions or personal limitations generally don't excuse falling short.

A classic analytical tool is the Hand formula from United States v. Carroll Towing. Judge Hand framed breach as a cost-benefit comparison: a defendant is negligent if the burden of precautions (B) is less than the probability of harm (P) multiplied by the gravity of the loss (L) — that is, when B < P × L. If cheap precautions would have prevented a likely, serious harm, failing to take them is a breach.

Proof of breach can also come from violating a safety statute (negligence per se in many states) or, when the accident is the kind that ordinarily doesn't happen without negligence, from res ipsa loquitur, which lets the jury infer breach from the circumstances.

Causation has two distinct parts, and strong answers address both. Actual cause (cause-in-fact) is usually the but-for test: but for the defendant's breach, would the harm have occurred? If the harm would have happened anyway, there's no actual cause. When multiple sufficient causes combine, courts use the substantial-factor test instead.

Proximate cause (legal cause) limits liability to harms that are a foreseeable result of the breach. Even if a defendant is the but-for cause, the law won't impose liability for freakish, far-removed consequences outside the scope of the risk created.

Intervening causes are the usual battleground. A foreseeable intervening cause doesn't break the chain, but an unforeseeable, independent intervening cause — a superseding cause — cuts off liability. Ask whether the later event was a foreseeable consequence of the original risk.

Negligence requires actual, compensable harm. Unlike some intentional torts, you cannot win a negligence claim on the wrongful conduct alone — there are no nominal damages for negligence. No injury, no claim.

Recoverable damages typically include economic losses (medical bills, lost wages, property damage) and noneconomic losses (pain and suffering). Plaintiffs must also act reasonably to mitigate their damages.

A recurring limit is that purely economic loss or stand-alone emotional distress, without physical injury or impact, is often not recoverable in ordinary negligence — though jurisdictions vary and there are recognized exceptions.

The most common 1L error in a negligence answer is treating causation as a single step — usually just running the but-for test and stopping. Actual cause and proximate cause are separate inquiries, and a complete answer analyzes both, even briefly.

Another frequent slip is collapsing breach and causation. Breach is whether the defendant acted unreasonably; causation is whether that unreasonable act actually produced the plaintiff's specific harm. A defendant can breach a duty and still escape liability because the breach didn't cause the injury.

Finally, don't forget defenses. Most jurisdictions apply comparative negligence, reducing recovery by the plaintiff's share of fault (a few still use contributory negligence, which can bar recovery entirely), and assumption of risk may apply where the plaintiff knowingly accepted a danger. A negligence answer that ignores defenses is incomplete.