Mich. Comp. Laws § 124.10

Sec. 10. The provisions of any statute or charter requiring a public official to post bond or obtain a surety bond, the premium on which may lawfully be paid by a public agency of this state, may be satisfied with surety or fidelity insurance coverage furnished by a group self-insurance pool organized under this act, including any deductible amount or other portion self-insured by the public agency itself.