Michigan Compiled Laws, Chapter 397. Libraries § 397.303

Sec. 3. In case a contract shall be made with an existing library, the county library fund shall be administered by the county library board and such contract, and all services provided for thereunder, shall be supervised by the county library board; and all employees engaged in the execution and carrying out of such contract shall be county employees, except those furnished and employed by the library rendering such services in accordance with or fulfillment of such contract.