Maryland State Personnel and Pensions Section 37-202

      (a)      A member of a State or local retirement or pension system may transfer service credit attained as a result of that membership to another State or local retirement or pension system if the member, without incurring a break in employment, accepts employment or an office that:

            (1)      requires or allows the member to participate in the new system; and

            (2)      does not allow the member to continue to accrue benefits in the previous system.

      (b)      A former member of a State or local retirement or pension system may transfer service credit attained as a result of the former membership to another State or local retirement or pension system if:

            (1)      the former member served as an elected or appointed official while a member of the previous system;

            (2)      the former member is serving as an elected or appointed official of the State when the former member requests the transfer of service credit;

            (3)      a break in employment occurred that prevents the former member from transferring service credit under subsection (a) of this section; and

            (4)      the former member's current office:

                  (i)      requires or allows the member to participate in the new system; and

                  (ii)      does not allow the member to continue to accrue benefits in the previous system.