Elements of Negligence

Physical harm need not be intentionally caused. A pedestrian knocked over by an automobile does not hurt less because the driver intended no wrong but was merely careless. The law imposes a duty of care on all of us in our everyday lives. Accidents caused by negligence are actionable.

Determining negligence is not always easy. If a driver runs a red light, we can say that he is negligent because a driver must always be careful to ascertain whether the light is red and be able to stop if it is. Suppose that the driver was carrying a badly injured person to a nearby hospital and that after slowing down at an intersection, went through a red light, blowing his horn, whereupon a driver to his right, seeing him, drove into the intersection anyway and crashed into him. Must one always stop at a red light? Is proof that the light was red always proof of negligence? Usually, but not always: negligence is an abstract concept that must always be applied to concrete and often widely varying sets of circumstances. Whether someone was or was not negligent is almost always a question of fact for a jury to decide. Rarely is it a legal question that a judge can settle.

The tort of negligence has four elements: (1) a duty of due care that the defendant had, (2) the breach of the duty of due care, (3) connection between cause and injury, and (4) actual damage or loss. Even if a plaintiff can prove each of these aspects, the defendant may be able to show that the law excuses the conduct that is the basis for the tort claim. We examine each of these factors below.

Duty of Care and Its Breach

The law does not impose on us a duty to care for every person. If the rule were otherwise, we would all, in this interdependent world, be our brothers’ keepers, constantly unsure whether any action we took might subject us to liability for its effect on someone else. The law copes with this difficulty by limiting the number of people toward whom we owe a duty to be careful.

In general, the law imposes no obligation to act in a situation to which we are strangers. We may pass the drowning child without risking a lawsuit. But if we do act, then the law requires us to act carefully. The law of negligence requires us to behave with due regard for the foreseeable consequences of our actions in order to avoid unreasonable risks of injury.

During the course of the twentieth century, the courts have constantly expanded the notion of “foreseeability,” so that today many more people are held to be within the zone of injury than was once the case. For example, it was once believed that a manufacturer or supplier owed a duty of care only to immediate purchasers, not to others who might use the product or to whom the product might be resold. This limitation was known as the rule of privity. And users who were not immediate purchasers were said not to be in privity with a supplier or manufacturer. In 1916, Judge Benjamin N. Cardozo, then on the New York Court of Appeals, penned an opinion in a celebrated case that exploded the theory of privity, though it would take half a century before the last state—Mississippi in 1966—would fall in line.

Determining a duty of care can be a vexing problem. Physicians, for example, are bound by principles of medical ethics to respect the confidences of their patients. Suppose a patient tells a psychiatrist that he intends to kill his girlfriend. Does the physician then have a higher legal duty to warn prospective victim? The California Supreme Court has said yes.Tarasoff v. Regents of University of California, 551 P.2d 334 (Calif. 1976).

Establishing a breach of the duty of due care where the defendant has violated a statute or municipal ordinance is eased considerably with the doctrine of negligence per se, a doctrine common to all US state courts. If a legislative body sets a minimum standard of care for particular kinds of acts to protect a certain set of people from harm and a violation of that standard causes harm to someone in that set, the defendant is negligent per se. If Harvey is driving sixty-five miles per hour in a fifty-five-mile-per-hour zone when he crashes into Haley’s car and the police accident report establishes that or he otherwise admits to going ten miles per hour over the speed limit, Haley does not have to prove that Harvey has breached a duty of due care. She will only have to prove that the speeding was an actual and proximate cause of the collision and will also have to prove the extent of the resulting damages to her.

Causation: Actual Cause and Proximate Cause

“For want of a nail, the kingdom was lost,” as the old saying has it. Virtually any cause of an injury can be traced to some preceding cause. The problem for the law is to know when to draw the line between causes that are immediate and causes too remote for liability reasonably to be assigned to them. In tort theory, there are two kinds of causes that a plaintiff must prove: actual cause and proximate cause. Actual cause (causation in fact) can be found if the connection between the defendant’s act and the plaintiff’s injuries passes the “but for” test: if an injury would not have occurred “but for” the defendant’s conduct, then the defendant is the cause of the injury. Still, this is not enough causation to create liability. The injuries to the plaintiff must also be foreseeable, or not “too remote,” for the defendant’s act to create liability. This is proximate cause: a cause that is not too remote or unforseeable.

Suppose that the person who was injured was not one whom a reasonable person could have expected to be harmed. Such a situation was presented in one of the most famous US tort cases, Palsgraf v. Long Island Railroad (Section 7.5 “Cases”), which was decided by Judge Benjamin Cardozo. Although Judge Cardozo persuaded four of his seven brethren to side with his position, the closeness of the case demonstrates the difficulty that unforeseeable consequences and unforeseeable plaintiffs present.

Damages

For a plaintiff to win a tort case, she must allege and prove that she was injured. The fear that she might be injured in the future is not a sufficient basis for a suit. This rule has proved troublesome in medical malpractice and industrial disease cases. A doctor’s negligent act or a company’s negligent exposure of a worker to some form of contamination might not become manifest in the body for years. In the meantime, the tort statute of limitations might have run out, barring the victim from suing at all. An increasing number of courts have eased the plaintiff’s predicament by ruling that the statute of limitations does not begin to run until the victim discovers that she has been injured or contracted a disease.

The law allows an exception to the general rule that damages must be shown when the plaintiff stands in danger of immediate injury from a hazardous activity. If you discover your neighbor experimenting with explosives in his basement, you could bring suit to enjoin him from further experimentation, even though he has not yet blown up his house—and yours.

Problems of Proof

The plaintiff in a tort suit, as in any other, has the burden of proving his allegations.

He must show that the defendant took the actions complained of as negligent, demonstrate the circumstances that make the actions negligent, and prove the occurrence and extent of injury. Factual issues are for the jury to resolve. Since it is frequently difficult to make out the requisite proof, the law allows certain presumptions and rules of evidence that ease the plaintiff’s task, on the ground that without them substantial injustice would be done. One important rule goes by the Latin phrase res ipsa loquitur, meaning “the thing speaks for itself.” The best evidence is always the most direct evidence: an eyewitness account of the acts in question. But eyewitnesses are often unavailable, and in any event they frequently cannot testify directly to the reasonableness of someone’s conduct, which inevitably can only be inferred from the circumstances.

In many cases, therefore, circumstantial evidence (evidence that is indirect) will be the only evidence or will constitute the bulk of the evidence. Circumstantial evidence can often be quite telling: though no one saw anyone leave the building, muddy footprints tracing a path along the sidewalk are fairly conclusive. Res ipsa loquitur is a rule of circumstantial evidence that permits the jury to draw an inference of negligence. A common statement of the rule is the following: “There must be reasonable evidence of negligence but where the thing is shown to be under the management of the defendant or his servants, and the accident is such as in the ordinary course of things does not happen if those who have the management use proper care, it affords reasonable evidence, in the absence of explanation by the defendants, that the accident arose from want of care.”Scott v. London & St. Katherine Docks Co., 3 H. & C. 596, 159 Eng.Rep. 665 (Q.B. 1865).

If a barrel of flour rolls out of a factory window and hits someone, or a soda bottle explodes, or an airplane crashes, courts in every state permit juries to conclude, in the absence of contrary explanations by the defendants, that there was negligence. The plaintiff is not put to the impossible task of explaining precisely how the accident occurred. A defendant can always offer evidence that he acted reasonably—for example, that the flour barrel was securely fastened and that a bolt of lightning, for which he was not responsible, broke its bands, causing it to roll out the window. But testimony by the factory employees that they secured the barrel, in the absence of any further explanation, will not usually serve to rebut the inference. That the defendant was negligent does not conclude the inquiry or automatically entitle the plaintiff to a judgment. Tort law provides the defendant with several excuses, some of which are discussed briefly in the next section.

Excuses

There are more excuses (defenses) than are listed here, but contributory negligence or comparative negligence, assumption of risk, and act of God are among the principal defenses that will completely or partially excuse the negligence of the defendant.

Vicarious Liability

Liability for negligent acts does not always end with the one who was negligent. Under certain circumstances, the liability is imputed to others. For example, an employer is responsible for the negligence of his employees if they were acting in the scope of employment. This rule of vicarious liability is often called respondeat superior, meaning that the higher authority must respond to claims brought against one of its agents. Respondeat superior is not limited to the employment relationship but extends to a number of other agency relationships as well.

Legislatures in many states have enacted laws that make people vicariously liable for acts of certain people with whom they have a relationship, though not necessarily one of agency. It is common, for example, for the owner of an automobile to be liable for the negligence of one to whom the owner lends the car. So-called dram shop statutes place liability on bar and tavern owners and others who serve too much alcohol to one who, in an intoxicated state, later causes injury to others. In these situations, although the injurious act of the drinker stemmed from negligence, the one whom the law holds vicariously liable (the bartender) is not himself necessarily negligent—the law is holding him strictly liable, and to this concept we now turn.