Michigan Compiled Laws, Chapter 38. Civil Service and Retirement § 38.1682

(a) “Department” means the department of technology, management, and budget.

(b) “Employer contributions” means the amount transferred by an employer to a participating unit retirement system on behalf of members of the retirement system to pay for the actuarial accrued liabilities of the retirement system.

(c) “Member” means a member, vested former member, deferred member, beneficiary, designated beneficiary, or refund beneficiary of a retirement system.

(d) “Participating unit” means a retirement system that elects to come under the provisions of section 6.  1

(e) “Retirant” means a person who has retired with a retirement benefit payable from a retirement system.

(f) “Retirement benefit” means an annuity, a retirement allowance, an optional benefit, a postretirement benefit, a benefit received from a defined contribution plan, defined benefit plan, deferred compensation plan, disability plan, life insurance plan, all money, investments and income of the various funds created under a public employee retirement system, and any other right accruing to a member under a retirement system.

(g) “Retirement system” means a public employee retirement system established by this state or a political subdivision of this state.

(h) “State unit” means a retirement system established under the state employees' retirement act, 1943 PA 204, MCL 38.1 to 38.69, the public school employees retirement act of 1979, 1980 PA 300, MCL 38.1301 to 38.1437, the judges retirement act of 1992, 1992 PA 234, MCL 38.2101 to 38.2670, the state police retirement act of 1986, 1986 PA 182, MCL 38.1601 to 38.1675, and the Michigan legislative retirement system act, 1957 PA 261, MCL 38.1001 to 38.1080.