If any application for aid financed in whole or in part by federal funds is not acted upon by the county department of social welfare within a reasonable time after the filing of the application, or is denied or revoked, in whole or in part, the applicant may appeal to the state department in the manner and form prescribed by the state department and an opportunity for a fair hearing shall be granted by said department as provided in section 9. The state department may also, upon its own motion, review any decision of a county department of social welfare, and may consider any such application upon which a decision has not been made by the county department of social welfare within a reasonable time. The state department may make such additional investigation as it may deem necessary, and shall make such decision as to the granting of aid financed in whole or in part by federal funds and the amount thereof to be granted the applicant as in its opinion is justified and in conformity with the laws of this state. In such cases the decisions of the state department shall be binding upon the county department of social welfare involved and shall be complied with by such county department.
MCL 400.67