Respondeat Superior

Respondeat superior — Latin for "let the master answer" — is a doctrine of vicarious liability rooted in English common law and now embedded in tort systems across the United States, the United Kingdom, Canada, Australia, and other common-law jurisdictions. It allows an injured party to recover damages from an employer when an employee, acting within the scope of their duties, causes harm through negligence or other tortious conduct.

Three elements are typically required: (1) an employer–employee or principal–agent relationship, (2) a tortious act by the employee, and (3) commission of that act within the scope of employment. Acts undertaken on a "frolic" of the employee's own — purely personal detours — generally fall outside the doctrine, while minor "detours" usually do not. Courts examine factors such as time, place, motive, and whether the conduct was of the kind the employee was hired to perform.

The rationale is partly economic and partly moral: employers profit from their workers' activities, control the working environment, and are typically better positioned to absorb losses, insure against them, and deter future misconduct. This is sometimes framed as the "deep pockets" or enterprise liability theory.

In international and human-rights contexts, the doctrine has informed debates about state responsibility for the acts of officials and corporate liability for the conduct of subsidiaries or contractors. It is conceptually related to, but distinct from, command responsibility in international criminal law, which requires a superior's knowledge or willful blindness regarding subordinates' crimes.

Limits include:

• Intentional torts: generally excluded unless foreseeably tied to the job (e.g., bouncers using force).
• Independent contractors: traditionally outside the doctrine, though exceptions exist for non-delegable duties.
• Sovereign immunity: may bar suits against governments absent statutory waivers such as the U.S. Federal Tort Claims Act.

The doctrine continues to evolve, particularly around gig-economy workers, where worker classification determines whether platforms answer for drivers' or couriers' torts.