Maryland State Personnel and Pensions Section 23-303
§ 23-303.
  (a)   In this section, "break in service" means a period of separation from employment in a fiscal year after the one in which a member first becomes employed, if during that fiscal year the member does not complete more than 350 hours of employment while a member.
  (b)   (1)   This section applies to a member of the Employees' Pension System or the Teachers' Pension System who was a member of one of those State systems.
    (2)   This section does not apply to:
      (i)   a retiree of the Employees' Pension System or the Teachers' Pension System; or
      (ii)   a member of the Employees' Pension System or Teachers' Pension System who is subject to the contributory pension benefit under Subtitle 2, Part II of this title.
  (c)   A member is entitled to the eligibility service to which the member was entitled before the separation from employment if:
    (1)   the member has not incurred a break in service;
    (2)   the member was entitled to a vested allowance at the time of the separation from employment; or
    (3)   (i)   the member has completed 1 year of eligibility service after a break in service; and
      (ii)   the number of consecutive years in which the member incurred a break in service is less than the years of eligibility service as a member before the break in service.
  (d)   To determine if a member is eligible for prior eligibility service under subsection (c)(3)(ii) of this section, the Board of Trustees shall determine the number of years of prior eligibility service:
    (1)   as of the day the member separated from employment; but
    (2)   excluding any eligibility service lost because of a prior break in service.
  (e)   When a member receives credit for eligibility service under subsection (c) of this section from the other system, the member has no further rights in the other system.