Maryland State Personnel and Pensions Section 11-304
§ 11-304.
  (a)   (1)   This section applies to employees on probation following a promotion or reinstatement to a position in the skilled service or professional service.
    (2)   This section does not apply to probationary employees in the management service.
  (b)   If, in the appointing authority's judgment, a probationary employee subject to this section is unable or unwilling to satisfactorily perform the duties or responsibilities of the position, the appointing authority shall:
    (1)   return the employee to the employee's former position if it is vacant; or
    (2)   demote the employee to a position comparable to the employee's position within the appointing authority's jurisdiction.
  (c)   A probationary employee may appeal a demotion under this section as a disciplinary action.