Michigan Compiled Laws, Chapter 567. Escheats § 567.233

Sec. 13. (1) Except as otherwise provided in section 17a,  1 property and any income or increment derived therefrom held in a fiduciary capacity for the benefit of another person is presumed abandoned unless the owner, within 3 years after it has become payable or distributable, has increased or decreased the principal, accepted payment of principal or income, communicated concerning the property, or otherwise indicated an interest as evidenced by a memorandum or other record on file prepared by the fiduciary.

(2) Funds in an individual retirement account or a qualified retirement plan for self-employed individuals or similar account or qualified plan established under the internal revenue code are not payable or distributable within the meaning of subsection (1) unless, under the terms of the account or qualified plan, distribution of all or part of the funds would then be mandatory.

(3) For the purpose of this section, an individual who holds property as an agent for a business association is deemed to hold the property in a fiduciary capacity for that business association alone, unless the agreement between the individual and the business association provides otherwise.

(4) For the purposes of this act, a person that is deemed to hold property in a fiduciary capacity for a business association alone is the holder of the property only insofar as the interest of the business association in the property is concerned, and the business association is the holder of the property insofar as the interest of any other person in the property is concerned.