A qualified participant or former qualified participant may nominate 1 or more individuals as a refund beneficiary by filing written notice of nomination with the state treasurer. If the qualified participant or former qualified participant is married at the time of the nomination and the participant's spouse is not the refund beneficiary for 100% of the account, the nomination is not effective unless the nomination is signed by the participant's spouse. However, the state treasurer may waive this requirement if the spouse's signature cannot be obtained because of extenuating circumstances.
MCL 38.2667