Palsgraf v. Long Island R.R.
A railroad guard, helping a passenger board a moving train, dislodged a package the passenger was carrying. The package contained fireworks. It fell, exploded, and (the plaintiff alleged) caused scales at the far end of the platform to fall on Helen Palsgraf. Palsgraf sued the railroad in negligence.
Does a defendant owe a duty of care to a plaintiff whose injury was not a reasonably foreseeable consequence of the defendant's conduct?
Negligence is not actionable unless it involves the invasion of a legally protected interest, the violation of a right. Duty is owed only to those within the zone of reasonably foreseeable harm from the defendant's conduct (Cardozo, majority).
The conduct of the guard, if wrongful at all, was a wrong only to the passenger with the package — not to Palsgraf, standing far away. There was nothing in the situation to suggest to even the most cautious mind that the parcel wrapped in newspaper would spread wreckage through the station. Because Palsgraf was outside the zone of foreseeable danger, the railroad owed her no duty, and without a duty there can be no negligence liability.
Judgment for the plaintiff reversed. A defendant is liable in negligence only to plaintiffs within the reasonably foreseeable zone of danger.