Mich. Comp. Laws § 550.843

Sec. 33. (1) The director shall establish a retention schedule for all records, books, papers, and other data on file with the department related to the enforcement of this act. (2) The director shall not order the destruction or other disposal of a record, book, paper, or other data that is any of the following: (a) Required by law to be filed or kept on file with the department until 10 years have passed. (b) Filed during the director's administration or administrations.