The mandate and the authority of the mandatary terminate when the mandatary notifies the principal of his resignation or renunciation of his authority. When a mandatary has reasonable grounds to believe that the principal lacks capacity, the termination is effective only when the mandatary notifies another mandatary or a designated successor mandatary. In the absence of another mandatary or a designated successor mandatary, the termination is effective when the mandatary notifies a person with a sufficient interest in the welfare of the principal.
La. C.C. § 3029