Mich. Comp. Laws § 211.111
Each township treasurer with the written consent of the treasurer's bondsmen, filed with the clerk of the township, shall appoint a deputy who shall take an oath of office and file the oath with the clerk and in case of the absence, sickness, death, or other disability of the treasurer shall possess all the powers and perform all the duties of the treasurer. The township treasurer and the treasurer's bondsmen shall be liable for all the acts and defaults of the deputy treasurer. The deputy shall be paid by salary or otherwise as the township board determines. With the approval of the township treasurer and the consent of the township board, the deputy may assist the treasurer in the performance of the treasurer's duties at any additional times agreed upon between the board and the treasurer.
MCL 211.111