Whether Mrs. Wray was vicariously liable for her son’s intentional prank because he committed it while using her automobile to carry children home from school at her request.
Holding
No. Delmas’s act was outside the scope of his authority and employment because it was a separate, mischievous purpose unrelated to the assigned task of transporting children.
Reasoning
The Court treated the case under ordinary agency and respondeat-superior principles rather than relying on the family-purpose doctrine. A principal or master is liable only when the agent or servant commits the tort while acting within the scope of authority or course of employment.
An act falls within the course of employment when the servant is performing the master’s assigned task, using a fair and reasonable means of carrying it out, or doing something that is an ordinary and natural incident of that task. The connection must be more than the fact that the servant happened to use the master’s property while on duty.
Delmas was authorized to use the automobile to bring children home. Attaching a battery to the door handle to shock someone was not a means of transporting the children, nor was it a natural or logical incident of that assignment. It was an extraordinary and prankish act undertaken for Delmas’s own mischievous purpose.
The Court relied by analogy on a case in which a boy, instructed to water his father’s lawn, deliberately sprayed a horse to frighten it. Although the boy used a tool provided for his assigned work, his deliberate mischief was outside the scope of employment. Likewise, Delmas’s use of the car in carrying out his prank did not convert the prank into his mother’s business.