Osborne v. McMasters

Supreme Court of Minnesota
41 N.W. 543, 40 Minn. 103, 1889 Minn. LEXIS 33 (1889)
ELI5:

Rule of Law:

The violation of a statute that imposes a specific duty for the protection of others constitutes negligence per se, rendering the violator civilly liable for injuries proximately caused by the violation to a person the statute was designed to protect.


Facts:

  • McMasters owned a drug-store and employed a clerk.
  • In the course of his employment, the clerk sold a deadly poison to Osborne's intestate.
  • The clerk failed to label the poison container with the word "Poison" as required by a state statute.
  • The intestate, unaware that the substance was a deadly poison, consumed it.
  • The intestate's death was caused by ingesting the poison.

Procedural Posture:

  • Osborne, as administrator for the deceased's estate, brought a negligence action against McMasters in a Minnesota trial court.
  • The trial court entered a judgment in favor of Osborne.
  • McMasters, as the appellant, appealed the judgment to the Supreme Court of Minnesota.

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Issue:

Does a defendant's violation of a statute that imposes a specific duty for the protection of others constitute negligence per se, thereby creating civil liability for injuries proximately caused by the violation, even if the statute does not explicitly provide for a civil cause of action?


Opinions:

Majority - Mitchell, J.

Yes. The violation of a statute imposing a specific duty for the protection of others constitutes negligence per se. The cause of action is not a new one created by the statute, but rather a common-law action for negligence. Negligence is the breach of a legal duty, and a statute can establish a fixed standard of care that defines that duty. When a defendant violates such a statute, it is conclusive evidence of negligence, and the defendant is liable for any resulting injuries of the type the statute was designed to prevent. Furthermore, under the doctrine of agency, the master (McMasters) is civilly liable for the negligence of his servant (the clerk) committed in the course of employment.



Analysis:

This case is a foundational holding for the doctrine of negligence per se. It establishes that a criminal or regulatory statute can be used to set the standard of care in a civil negligence lawsuit. This decision simplifies the plaintiff's burden, as they no longer need to prove what a 'reasonably prudent person' would have done; they only need to show the defendant violated a safety statute and that the violation caused the harm the statute aimed to prevent. This principle significantly impacts tort law by allowing courts to import standards of conduct from the legislature into common-law negligence claims, thereby strengthening public safety regulations.

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