Subject to the limitations of § 5-306 of this subtitle, a supervisor, appointing authority, or the head of a principal unit may not take or refuse to take any personnel action as a reprisal against an employee who:
(1) discloses information that the employee reasonably believes evidences:
(i) an abuse of authority, gross mismanagement, or gross waste of money;
(ii) a substantial and specific danger to public health or safety; or
(iii) a violation of law; or
(2) following a disclosure under item (1) of this section seeks a remedy provided under this subtitle or any other law or policy governing the employee's unit.