Negligence is a failure to exercise appropriate and/or ethical ruled care expected to be exercised amongst specified circumstances. The area of tort law known as negligence involves harm caused by failing to act as a form of carelessness possibly with extenuating circumstances. The core concept of negligence is that people should exercise reasonable care in their actions, by taking account of the potential harm that they might foreseeably cause to other people or property.
Product liability is the area of law in which manufacturers, distributors, suppliers, retailers, and others who make products available to the public are held responsible for the injuries those products cause. Although the word "product" has broad connotations, product liability as an area of law is traditionally limited to products in the form of tangible personal property.
In law and insurance, a proximate cause is an event sufficiently related to an injury that the courts deem the event to be the cause of that injury. There are two types of causation in the law: cause-in-fact, and proximate cause. Cause-in-fact is determined by the "but for" test: But for the action, the result would not have happened. The action is a necessary condition, but may not be a sufficient condition, for the resulting injury. A few circumstances exist where the but-for test is ineffective. Since but-for causation is very easy to show, a second test is used to determine if an action is close enough to a harm in a "chain of events" to be legally valid. This test is called proximate cause. Proximate cause is a key principle of insurance and is concerned with how the loss or damage actually occurred. There are several competing theories of proximate cause. For an act to be deemed to cause a harm, both tests must be met; proximate cause is a legal limitation on cause-in-fact.
A tort is a civil wrong that causes a claimant to suffer loss or harm, resulting in legal liability for the person who commits the tortious act. Tort law can be contrasted with criminal law, which deals with criminal wrongs that are punishable by the state. While criminal law aims to punish individuals who commit crimes, tort law aims to compensate individuals who suffer harm as a result of the actions of others. Some wrongful acts, such as assault and battery, can result in both a civil lawsuit and a criminal prosecution in countries where the civil and criminal legal systems are separate. Tort law may also be contrasted with contract law, which provides civil remedies after breach of a duty that arises from a contract. Obligations in both tort and criminal law are more fundamental and are imposed regardless of whether the parties have a contract.
Palsgraf v. Long Island Railroad Co., 248 N.Y. 339, 162 N.E. 99 (1928), is a leading case in American tort law on the question of liability to an unforeseeable plaintiff. The case was heard by the New York Court of Appeals, the highest state court in New York; its opinion was written by Chief Judge Benjamin Cardozo, a leading figure in the development of American common law and later a United States Supreme Court justice.
This article addresses torts in United States law. As such, it covers primarily common law. Moreover, it provides general rules, as individual states all have separate civil codes. There are three general categories of torts: intentional torts, negligence, and strict liability torts.
The tort of negligent infliction of emotional distress (NIED) is a controversial cause of action, which is available in nearly all U.S. states but is severely constrained and limited in the majority of them. The underlying concept is that one has a legal duty to use reasonable care to avoid causing emotional distress to another individual. If one fails in this duty and unreasonably causes emotional distress to another person, that actor will be liable for monetary damages to the injured individual. The tort is to be contrasted with intentional infliction of emotional distress in that there is no need to prove intent to inflict distress. That is, an accidental infliction, if negligent, is sufficient to support a cause of action.
In some common law jurisdictions, contributory negligence is a defense to a tort claim based on negligence. If it is available, the defense completely bars plaintiffs from any recovery if they contribute to their own injury through their own negligence.
United States v. Carroll Towing Co., 159 F.2d 169, is a decision from the 2nd Circuit Court of Appeals that proposed a test to determine the standard of care for the tort of negligence. The judgment was written by Judge Learned Hand wherein he described what is now called the calculus of negligence or the Hand Test, a classic example of a balancing test.
Comparative negligence, called non-absolute contributory negligence outside the United States, is a partial legal defense that reduces the amount of damages that a plaintiff can recover in a negligence-based claim, based upon the degree to which the plaintiff's own negligence contributed to cause the injury. When the defense is asserted, the factfinder, usually a jury, must decide the degree to which the plaintiff's negligence and the combined negligence of all other relevant actors all contributed to cause the plaintiff's damages. It is a modification of the doctrine of contributory negligence that disallows any recovery by a plaintiff whose negligence contributed even minimally to causing the damages.
In tort law, an intervening cause is an event that occurs after a tortfeasor's initial act of negligence and causes injury/harm to a victim. An intervening cause will generally absolve the tortfeasor of liability for the victim's injury only if the event is deemed a superseding cause. A superseding cause is an unforeseeable intervening cause. By contrast, a foreseeable intervening cause typically does not break the chain of causality, meaning that the tortfeasor is still responsible for the victim's injury—unless the event leads to an unforeseeable result.
Tortious interference, also known as intentional interference with contractual relations, in the common law of torts, occurs when one person intentionally damages someone else's contractual or business relationships with a third party, causing economic harm. As an example, someone could use blackmail to induce a contractor into breaking a contract; they could threaten a supplier to prevent them from supplying goods or services to another party; or they could obstruct someone's ability to honor a contract with a client by deliberately refusing to deliver necessary goods.
Li v. Yellow Cab Co., 13 Cal.3d 804, 532 P.2d 1226 (1975), commonly referred to simply as Li, is a California Supreme Court case that judicially embraced comparative negligence in California tort law and rejected strict contributory negligence.
Dolan v. United States Postal Service, 546 U.S. 481 (2006), was a case decided by the Supreme Court of the United States, involving the extent to which the United States Postal Service has sovereign immunity from lawsuits brought by private individuals under the Federal Tort Claims Act. The Court ruled that an exception to the FTCA that barred liability for the "negligent transmission of mail" did not apply to a claim for injuries caused when someone tripped over mail left by a USPS employee. Instead, the exception only applied to damage caused to the mail itself or that resulted from its loss or delay.
The family purpose doctrine is "a court-created legal fiction that employs agency principles to impose vicarious liability on a head of the household for the negligent operation of a motor vehicle by a family member." In a typical case involving the doctrine, the so-called "head of the household" has given their family members permission to drive their car "for their general use, pleasure, and convenience," i.e., a "family purpose." Furthermore, plaintiffs in most American courts that follow the doctrine can prove the car was being used for a family purpose "merely by showing that it was being used by a family member with the defendant's consent." The underlying theory of the doctrine is that "the driver of a family car, in pursuit of recreation or pleasure, is engaged in the owner's business and is viewed as either the agent or servant of the owner." In some instances, the doctrine may apply to more than just traditional cars, such as motorbikes, trucks, and motor boats. Moreover, a plaintiff's family purpose doctrine claim does not necessarily fail if "the defendant has provided a separate vehicle for each licensed driver in the family, so that each family member ordinarily operates his or her own vehicle."
Feres v. United States, 340 U.S. 135 (1950), combined three pending federal cases for a hearing in certiorari in which the Supreme Court of the United States held that the United States is not liable under the Federal Tort Claims Act for injuries to members of the armed forces sustained while on active duty and not on furlough and resulting from the negligence of others in the armed forces. The opinion is an extension of the English common-law concept of sovereign immunity.
Escola v. Coca-Cola Bottling Co., 24 Cal.2d 453, 150 P.2d 436 (1944), was a decision of the Supreme Court of California involving an injury caused by an exploding bottle of Coca-Cola. It was an important case in the development of the common law of product liability in the United States, not so much for the actual majority opinion, but for the concurring opinion of California Supreme Court justice Roger Traynor.
Richard Allen Posner is an American legal scholar who served as a federal appellate judge on the U.S. Court of Appeals for the Seventh Circuit from 1981 to 2017. A senior lecturer at the University of Chicago Law School, Posner was identified by The Journal of Legal Studies as the most-cited legal scholar of the 20th century. As of 2021, he is also the most-cited legal scholar of all time. He is widely considered to be one of the most influential legal scholars in the United States.
Dillon v. Legg, 68 Cal. 2d 728 (1968), was a case decided by the Supreme Court of California that established the tort of negligent infliction of emotional distress. To date, it is the most persuasive decision of the state supreme court in the United States during the latter half of the 20th century: Dillon has been favorably cited and followed by at least twenty reported out-of-state appellate decisions, more than any other California appellate decision in the period from 1940 to 2005. It was also favorably cited by the House of Lords in an important case on nervous shock, McLoughlin v O'Brian [1983].
Greenman v. Yuba Power Products, Inc, was a California torts case in which the Supreme Court of California dealt with the torts regarding product liability and warranty breaches. The primary legal issue of the case was to determine whether a manufacturer is strictly liable in tort when an article he places on the market proves to have a defect that causes injury to a human being. The case was originally heard in a San Diego district court where the verdict was against the manufacturer. This verdict was appealed by the manufacturer to the Supreme Court of California which was presided by Gibson, C. J., Schauer, J., McComb, J., Peters, J., Tobriner, J., and Peek, J., and the opinion was delivered by Judge Roger J Traynor.
