Definition
Negligence is the failure to exercise the degree of care that a reasonably prudent person would use under similar circumstances, resulting in harm to another. It is the legal foundation for most personal injury claims. A person is negligent not because they intended to cause harm, but because they failed to act as carefully as the law expects, and that carelessness injured someone else.
Legal Meaning
Negligence is the central concept of tort law and the basis for the vast majority of personal injury claims. It does not require any intent to harm. Instead, the law imposes a general duty on everyone to act with reasonable care toward others, and negligence is what happens when someone falls short of that duty and causes injury.
To win a negligence claim, a plaintiff must prove four elements: (1) duty—the defendant owed a legal duty of care; (2) breach—the defendant failed to meet that duty; (3) causation—the breach was both the actual cause ("but for" the conduct, the harm would not have occurred) and the proximate (foreseeable) cause of the injury; and (4) damages—the plaintiff suffered actual harm. If any element is missing, the claim fails.
The standard used to judge conduct is usually the objective "reasonable person" standard. Professionals such as doctors and lawyers are held to a higher, profession-specific standard of care. Negligence claims are civil matters decided by a "preponderance of the evidence," a lower bar than the criminal "beyond a reasonable doubt" standard, as explained in our guide on civil vs. criminal cases. The available damages and the effect of the plaintiff's own fault depend on state law.
Key Points
- Negligence is carelessness, not intentional wrongdoing
- It requires four elements: duty, breach, causation, and damages
- Conduct is judged against the objective "reasonable person" standard
- Professionals are held to a higher, profession-specific standard of care
- Causation has two parts: actual cause and proximate (foreseeable) cause
- Negligence is a civil wrong proven by a preponderance of the evidence
- A plaintiff's own fault may reduce or bar recovery, depending on the state
- It is the basis for most car accident, slip and fall, and malpractice claims
Real-World Example
A store employee mops a floor but forgets to put out a "wet floor" sign and leaves the area unattended. A shopper, with no reason to expect the floor is slippery, walks through, slips, and breaks her hip.
Analyzing the four elements: the store owed a duty to keep its premises reasonably safe; it breached that duty by leaving a wet floor without warning; the breach was the actual and foreseeable cause of the fall; and the shopper suffered real damages in the form of a serious injury, medical bills, and lost wages. All four elements are present, so the store was negligent. If the store had placed a clearly visible warning sign and the shopper ignored it, the analysis—and the question of comparative fault—could change significantly.
The Four Elements of Negligence
| Element | What It Means | Example Question |
|---|---|---|
| Duty | A legal obligation to use reasonable care | Did the defendant owe the plaintiff care? |
| Breach | Failing to meet that standard of care | Did they act unreasonably? |
| Causation | Actual and foreseeable link to the harm | Did the breach cause the injury? |
| Damages | Actual, compensable harm | Did the plaintiff suffer real loss? |
Related Doctrines and Variations
Several related doctrines build on the basic negligence framework. Negligence per se treats the violation of a safety statute (like a traffic law) as automatic evidence of breach when the statute was meant to protect against the type of harm that occurred. Res ipsa loquitur ("the thing speaks for itself") allows an inference of negligence when an accident is the kind that ordinarily does not happen without carelessness and the defendant controlled the situation.
How a plaintiff's own carelessness affects the case depends on the state. Most states apply comparative negligence, reducing recovery by the plaintiff's share of fault, while a small number follow contributory negligence, which can bar recovery for any fault at all. In contrast, some claims do not require negligence: strict liability applies in certain product liability and dog bite cases, where a defendant can be liable regardless of how careful they were.
Related Terms
Injured by Someone's Carelessness?
Negligence is the heart of most injury claims—learn how personal injury law works
Explore Personal Injury LawWhen You Need a Lawyer
Proving negligence requires evidence on all four elements, which can be difficult without legal help. Consider consulting an attorney if:
- You were injured and believe someone else's carelessness was responsible
- The other party or their insurer disputes fault or causation
- Your injury is serious or involves ongoing treatment
- A professional, such as a doctor, may have breached a higher standard of care
- You are unsure how your state's comparative or contributory fault rules apply
Most personal injury attorneys work on a contingency fee and offer free consultations. For more on costs and selecting counsel, see understanding legal fees and how to choose a lawyer.
Frequently Asked Questions
What are the four elements of negligence?
The four elements are duty, breach, causation, and damages. The plaintiff must show the defendant owed a duty of reasonable care, breached that duty by failing to act reasonably, that the breach was both the actual and proximate cause of the harm, and that the plaintiff suffered actual damages. If any element is missing, a negligence claim generally fails.
What is the 'reasonable person' standard?
The reasonable person standard is an objective test that asks how a hypothetical, ordinarily careful person would have acted in the same situation. A defendant's conduct is compared to that standard rather than to their personal beliefs or intentions. Some situations apply a heightened standard, such as the professional standard of care for doctors or lawyers, which is measured against others in the same field.
Is negligence the same as a crime?
Usually not. Ordinary negligence is a civil wrong (a tort) that leads to a lawsuit for money damages, not criminal punishment. The civil standard of proof is a preponderance of the evidence, which is lower than the criminal 'beyond a reasonable doubt' standard. In rare cases, extremely reckless conduct can rise to the level of criminal negligence, but that is a separate and higher threshold.
What happens if the injured person was also negligent?
It depends on the state. Most states use comparative negligence, which reduces the plaintiff's recovery by their percentage of fault, and some bar recovery if the plaintiff is more at fault than the defendant. A few states follow contributory negligence, under which any fault by the plaintiff can bar recovery entirely. Because the rule varies, the same facts can lead to very different outcomes by state.
Filing Deadlines Still Apply
Negligence claims must be filed within your state's statute of limitations. See the deadlines in our state-by-state statute of limitations guide.