Mich. Comp. Laws § 400.39
All old age assistance, aid to dependent children, aid to the blind, and aid to the permanently and totally disabled, given under this act shall be paid directly to the applicant or recipient except that (1) if a legal guardian has been duly appointed for such applicant or recipient, the assistance may be paid to such guardian for the benefit of such applicant or recipient, or (2) if the state department has entered into a contractual arrangement or agreement or has authorized goods or services from a provider including hospitalization or medical care in behalf of the applicant or recipient, a portion of the assistance as determined by the state department may be paid directly to the contractor or provider, or (3) if necessary, as determined by the state department and in conformance with the rules of the department of health, education and welfare and such rules as shall be developed by the state department, the assistance may be paid to a third party interested in and acting responsibly in behalf of such applicant or recipient for the benefit of such applicant or recipient. (4) Any assistance checks not indorsed during the lifetime of the recipient shall be null and void and shall be returned to the state department and canceled.
MCL 400.39