If an employer commissions a tort, this will render the employer a joint tortfeasor. Fourth, the inability to point to a specific tortfeasor must not be the plaintiff's fault. The tortfeasor is the person who interferes with the contractual relationship between others. In civil litigation, it can offer advantages relative to aiding-and-abetting or joint tortfeasor case theories. The court may impose an injunction on a tortfeasor, such as in Sturges v Bridgman. The person who commits the act is called a tortfeasor.