Michigan Compiled Laws, Chapter 600. Revised Judicature Act of 1961 § 600.5335

Sec. 5335. Payment by any employer to the clerk of the court in pursuance of notice from the court to him or it of the filing of a petition by an employee, shall be payment to the employee the same as if received by said employee personally. Any employer who pays any wages, salary or commission to any employee after receiving notice of said assignment, shall be liable for any sums so paid on garnishment proceedings taken by any creditor.