Mich. Comp. Laws § 38.1066

Sec. 66. (1) "Qualified participant" means an individual who is a participant of Tier 2 and who meets 1 of the following requirements: (a) An individual who first becomes a legislator or lieutenant governor on or after March 31, 1997, and who before March 31, 1997 would have been eligible to be a member of Tier 1. (b) An individual who elects to terminate membership in Tier 1 and who elects to participate in Tier 2 in the manner prescribed in section 61. (2) "Refund beneficiary" means an individual nominated by a qualified participant or a former qualified participant under section 77 to receive a distribution of the participant's accumulated balance in the manner prescribed in section 78. (3) "State treasurer" means the treasurer of this state.