Duty of Care - Measurement

Measurement

Once a duty exists, the plaintiff must show that the defendant breached it. This is generally treated as the second element of negligence in the United States. Breach involves testing the defendant's actions against the standard of a reasonable person, which varies depending on the facts of the case. For example, physicians will be held to reasonable standards for members of their profession, rather than those of the general public, in negligence actions for medical malpractice.

In turn, once the appropriate standard has been found, the breach is proven when the plaintiff shows that the defendant's conduct fell below or did not reach the relevant standard of reasonable care.

However, it is possible that the defendant took every possible precaution and exceeded what would have been done by any reasonable person, yet the plaintiff was injured. If that is the case, the plaintiff cannot recover in negligence. This is the key difference between negligence and strict liability; if strict liability attaches to the defendant's conduct, then the plaintiff can recover under that theory regardless of whatever precautions were taken by the defendant.