Michigan Compiled Laws, Chapter 500. Insurance Code of 1956 § 500.2209

Sec. 2209. (1) It shall be lawful for any married woman, by herself, and in her name or in the name of any third person, with his assent, as her trustee, to cause to be insured for her sole use, the life of her husband or the life of any other person, in any life insurance company of any nature whatever, located in either of the states of the United States of America or in Great Britain, for any definite period, or for the term of his natural life; and in case of her surviving her husband, or such other person insured in her behalf, the sum or net amount of the policy of insurance due and payable by the terms of the insurance, shall be payable to her, to and for her own use, free from the claims of the representatives of her husband, or of such other person insured, or of any of his creditors, but such exemption shall not apply where the amount of premium annually paid shall exceed the sum of $300.00.

(2) In case of the death of the wife before the decease of her husband, or of such other person insured, the amount of the insurance may be made payable after her death to her children, for their use, and to their guardian, if under age, or the amount of the policy may be disposed of by such married woman by a last will and testament.