Maryland State Personnel and Pensions Section 31-109

      Except as provided in § 31-110 of this subtitle, an employee of an eligible governmental unit is entitled to be a member of the Employees' Pension System if:

            (1)      (i)      the employee is not a member of a local pension system; and

                  (ii)      the legislative body of the eligible governmental unit approves participation of the eligible governmental unit in the Employees' Pension System; or

            (2)      (i)      the employee is a member of a local pension system;

                  (ii)      at least 60% of the members of the local pension system petition to become members of the Employees' Pension System; and

                  (iii)      the legislative body of the eligible governmental unit approves participation of the eligible governmental unit in the Employees' Pension System as though the local pension system were not in operation.