Mich. Comp. Laws § 567.256: Agreement to compensate for recovery of property; enforcement; agreement between locator and apparent unclaimed property owner.

Sec. 36.

(1) An agreement to pay compensation to recover or assist in the recovery of property reported under section 18, made within 24 months after the date payment or delivery is made under section 20, is unenforceable.

(2) A written agreement between a locator and an apparent owner of unclaimed property is subject to subsection (1).