Md. Code, State Personnel and Pensions § 22–217

Membership ends if the member:

(1) is separated from employment for more than:

(i) 4 years, if a member of the Employees’ Retirement System; or

(ii) 5 years, if a member of the Teachers’ Retirement System;

(2) withdraws the member’s accumulated contributions;

(3) transfers to the Employees’ Pension System or Teachers’ Pension System;

(4) becomes a retiree; or

(5) dies.