Maryland Code, STATE PERSONNEL AND PENSIONS 12-203
(b) A grievance procedure must be initiated by an employee within 20 days after:
(1) the occurrence of the alleged act that is the basis of the grievance; or
(2) the employee first knew of or reasonably should have known of the alleged act that is the basis of the grievance.
(c) Within 10 days after receiving a grievance, the appointing authority shall hold a conference with the grievant and they shall attempt to resolve the grievance.
(d) Within 10 days after the conference, the appointing authority shall issue a written decision to the grievant and may grant any appropriate remedy under § 12-402(a) of this title.