Key takeaways
- Negligence is not strict liability: an injury does not by itself prove that the defendant acted unreasonably.
- Duty is a legal threshold; breach compares actual conduct with the care required under the circumstances.
- Causation usually asks both whether the conduct made a factual difference and whether the resulting harm is legally close enough.
- The plaintiff generally must prove real harm and connect that harm to the defendant's breach.
What are the four elements of negligence?
Negligence is a method of assigning civil responsibility for harm caused by a failure to use legally required care. Students commonly organize an ordinary negligence claim into four elements: duty, breach, causation, and damages. Terminology differs among jurisdictions. Some jury instructions combine duty and breach under the question whether the defendant was negligent, while others state each concept separately. The analytical work remains similar.
The plaintiff generally must establish every required element. A strong showing on three does not cure a missing fourth. A defendant might owe a duty and act carelessly, but there is no ordinary negligence recovery if the conduct caused no compensable harm. Conversely, serious harm does not establish negligence when the defendant used the care the law required or when the harm arose from an unrelated cause.
The video uses Maya's grocery-store fall as a single case file. An employee mops an aisle, leaves no warning sign, and Maya slips, breaks her wrist, and misses work. The facts make the checklist easy to see, but they do not predetermine the result. Evidence, local premises-liability rules, defenses, and the fact-finder's credibility judgments still matter.
Element one: duty of care
Duty asks whether the law required the defendant to exercise care toward this plaintiff with respect to this kind of risk. It is not a promise to prevent every accident. Duty can arise from general law, a special relationship, voluntary conduct, a statute, or control over property or an activity. Courts often treat the existence and scope of duty as a legal question for the judge.
In the lesson's simplified premises example, a store open to shoppers generally must use reasonable care concerning conditions on the premises. Maya is an invited customer in an aisle controlled by the store, so the duty issue appears straightforward. Harder cases involve unforeseeable plaintiffs, independent criminal acts, omissions rather than affirmative conduct, or policy reasons for limiting a duty.
Foreseeability frequently matters to duty, but students should not use the word as a substitute for analysis. Some jurisdictions evaluate foreseeability primarily when defining duty; others reserve fact-specific foreseeability for breach or proximate cause. State doctrine and the precise relationship between the parties determine where the issue belongs.
Element two: breach of duty
Breach asks whether the defendant's conduct fell below the applicable standard of care. For ordinary negligence, the benchmark is often what a reasonably careful person would have done under similar circumstances. The comparison is objective, but the circumstances matter. A reasonable response to an emergency may differ from ordinary conduct, and specialized activities may carry professional or statutory standards.
Mopping a floor is not itself careless. A reasonable store should clean hazards. The possible breach is allowing customers to enter a recently mopped aisle without a warning, barrier, inspection, or other precaution. Evidence about the store's procedures, the floor's condition, the time since mopping, visibility, prior notice, and available precautions could affect the decision.
Custom can inform the standard but may not conclusively establish it. A common practice can still be unreasonable, and an unusually careful practice is not automatically required by law. Statutes and regulations may also matter, sometimes through a negligence-per-se doctrine, but the effect and required conditions vary significantly by jurisdiction.
Element three: factual and proximate causation
Causation prevents liability from attaching merely because the defendant acted carelessly somewhere in the story. Factual cause asks whether the conduct actually contributed to the harm. The traditional but-for question is useful: would the injury have occurred when and as it did without the defendant's breach? If Maya would not have slipped but for the unmarked wet floor, the causal chain begins.
But-for analysis can become difficult when several forces combine, multiple actors could independently cause the same harm, or scientific uncertainty prevents a simple reconstruction. Jurisdictions use doctrines such as substantial-factor language or other tests for particular causal problems. Students should use the formulation supplied by the controlling law rather than assuming one verbal test resolves every case.
Proximate cause, sometimes called legal cause, asks whether liability should extend to this result. Foreseeability, intervening events, the type of harm, and the directness of the connection can matter. A broken wrist from slipping on a wet floor is the type of harm that makes an unwarned slick surface dangerous. An injury produced much later by an extraordinary, unrelated event may be too remote even if the wet floor appears somewhere in the history.
Keep the two causal questions distinct. Factual cause is about contribution to the actual sequence. Proximate cause is a legal limit on responsibility. Writing separate sentences for each question often exposes hidden gaps in an exam answer or case assessment.
Element four: damages and compensable harm
An ordinary negligence claim requires actual harm. A careless near-miss may justify safer procedures, but without injury or legally recognized loss there may be no damages to award in negligence. Maya's broken wrist, medical expenses, lost earnings, and pain are concrete categories of harm, subject to proof and the jurisdiction's damages rules.
The plaintiff must connect each claimed loss to the injury caused by the breach. Medical records, bills, wage documents, testimony, and expert evidence may be relevant. A defendant can dispute whether treatment was necessary, whether a condition predated the event, whether future loss is reasonably supported, or whether the plaintiff failed to take reasonable steps to limit avoidable loss.
Damages are not a punishment in the ordinary negligence framework. Compensatory damages aim to address proven loss. Punitive damages require additional legal findings and are not available merely because the defendant was negligent. Statutory caps, collateral-source rules, and recoverable categories vary by jurisdiction and claim type.
Defenses and plaintiff fault
After analyzing the plaintiff's four elements, look for defenses. If Maya was distracted, ignored a visible barrier, or wore unsafe footwear, a defendant may argue that her own conduct contributed to the fall. That does not automatically erase the store's conduct; its effect depends on the jurisdiction's fault system.
Most states use some form of comparative negligence, reducing recovery according to the plaintiff's share of fault and, in modified systems, sometimes barring recovery above a threshold. A small number retain contributory-negligence rules that can bar recovery when the plaintiff is at fault. Assumption of risk, immunity, statutes of limitation, notice requirements, and limitations on premises liability may also affect a real case.
Keep defenses in their proper place. First determine whether the plaintiff can establish duty, breach, causation, and damages. Then analyze doctrines that reduce or defeat recovery. Mixing those stages can obscure who must prove what and under which standard.
A negligence exam and case checklist
Use the four elements as headings, but make each heading do analytical work. State the governing rule cautiously, connect specific facts on both sides, identify missing evidence, and flag jurisdiction-dependent questions. A conclusion should reflect uncertainty rather than simply repeat the element's name.
- Duty: identify the relationship, source, scope, and protected risk.
- Breach: compare the actual precautions with reasonable care under the circumstances.
- Factual cause: ask what would have happened without the alleged breach.
- Proximate cause: test foreseeability, remoteness, and intervening events under local law.
- Damages: identify concrete harm and the evidence connecting each loss to the event.
- Defenses: analyze plaintiff fault and other limitations only after the prima facie claim.
Negligence elements at a glance
| Element | Core question | Example evidence | Common mistake |
|---|---|---|---|
| Duty | Did the law require care toward this plaintiff for this risk? | Relationship, control, statute, undertaking | Assuming every injury creates a duty |
| Breach | Did conduct fall below the applicable standard of care? | Warnings, inspections, policies, witness accounts | Using hindsight or treating negligence as strict liability |
| Causation | Did the breach cause this harm closely enough for liability? | Timeline, medical proof, alternative causes | Combining factual and proximate cause into one conclusion |
| Damages | Did the plaintiff suffer legally compensable harm? | Records, bills, wage evidence, testimony | Assuming careless conduct alone supports recovery |
Edited video transcript
The transcript is lightly edited for reading while preserving the substance of the narrated lesson.
Four locks on one claim
Maya stops at a grocery store for milk. An employee mopped an aisle a few minutes earlier but left no warning sign. Maya slips, breaks her wrist, and misses six weeks of work. Can she sue? The answer is a checklist. A plaintiff generally has to prove duty, breach, causation, and damages. Miss any one and the claim usually fails. Think of the four elements as four locks on the same door.
Element one — duty
Before asking whether the store was careless, ask whether it owed Maya a legal obligation of care. Duty is about relationships, not simply the accident. A store that invites the public to shop generally owes customers reasonable care concerning the premises. That does not guarantee safety or make the store responsible for every fall. Duty is the threshold question that opens the analysis.
Element two — breach
Breach asks whether the defendant lived up to the required care. Negligence is not strict liability, and an accident alone does not prove fault. Courts compare conduct with what a reasonably careful person would have done under similar circumstances. Mopping is reasonable; leaving a wet customer aisle without a sign, cone, or barrier may fall short. The standard responds to the circumstances and should not be applied through hindsight alone.
Element three — causation
Causation contains two related questions. Factual cause asks whether the harm would have happened without the conduct. Proximate or legal cause asks whether the harm is sufficiently connected and foreseeable for the law to impose responsibility. A wrist injury from slipping on the wet floor is a predictable result. An injury from an extraordinary, unrelated event later in the chain may be too remote.
Element four — damages
Careless conduct without compensable harm usually does not complete a negligence claim. Maya has a broken wrist, treatment costs, missed work, and pain. Those are concrete losses, although each must be proved and connected to the event. Her own conduct may also matter under comparative or contributory negligence rules, which differ among jurisdictions.
The four-element checklist
Ask whether the defendant owed a duty, whether conduct breached the standard of care, whether the breach was both a factual and legal cause, and whether the plaintiff suffered compensable harm. Then consider defenses. Use this structure for any negligence fact pattern, but always check the law and instructions that govern the actual jurisdiction.
Primary sources and further reading
These sources illustrate the general framework. Always verify the current law and instructions in the controlling jurisdiction.
- 2026 California Civil Jury Instructions: See CACI No. 400 and related negligence instructions for an official state example of the elements and causation formulation.
- California Civil Jury Instructions Resource Center: Official Judicial Council access point for current and archived civil jury instructions.
- California Civil Code section 1714: Official California legislative text stating the state's general reasonable-care principle.
- California Civil Plain English Comparison: Judicial Council examples showing how legal standards are expressed for jurors in accessible language.