A principal can revoke (withdraw) an agent’s authority to represent them, simply by notifying the agent of their decision. The notice can be oral, even if the agent’s original authority was given in writing. Although it effectively puts an end to the agent’s power of representation, the principal’s revocation of an agent’s authority may be a breach of contract, giving the agent a right to claim damages. Legislative provisions govern various aspects of a principal’s power to revoke an agent’s mandate, for example, to protect the interests of third parties who may have dealt with the agent without notice of the revocation.