Respondeat superior is when an employer, master, or principal is liable for its employee, servant, or agent.
Under the doctrine of respondeat superior, an employer is ordinarily liable for the injuries its employees cause others in the scope of their employment.Respondeat superior imposes liability whether or not the employer was itself negligent, and whether or not the employer had control of the employee.
The going-and-coming rule does not apply when an employee endangers others with a risk arising from or related to work. This is determined by if it "was a generally foreseeable consequence of the activity." The conduct is foreseeable if it is not so startling or unusual that it would seem unfair to include the loss as part of the employer's cost of doing business.
A slight deviation for the comfort, convenience, health, and welfare of the employee while at work is not outside the scope of employment if the conduct is not a substantial deviation from the duties of employment.
Only when it is reasonably connected with the employment and so within its scope of employment.
The majority of jurisdictions and the Restatement do not allow punitive damages unless the principal authorized or ratified the acts, was reckless in employing or retaining the agent, or the agent was employed in a managerial capacity and was acting in the scope of employment.
Employers are not vicariously responsible for the tortious acts of independent contractors.
A person is a contractor if he has the right to control the physical details of the work.
Where there is a non-delegable duty, the person upon whom the duty is imposed is responsible for an independent contractor's actions in negligently performing that duty.