Maryland Code, Land Use § 16-215

(1) interfere with, coerce, or restrain an employee in the exercise of the employee's rights under this subtitle;

(2) cause or attempt to cause the Commission to discriminate against an employee in the exercise of the employee's rights under this subtitle;

(3) coerce, discipline, fine, or attempt to coerce a member of an employee organization as punishment or reprisal;

(4) coerce, discipline, fine, or attempt to coerce a member of an employee organization for the purpose of impeding the member's work performance;

(5) refuse to negotiate in good faith with the Commission as required by this subtitle; or

(6) fail or refuse to cooperate in impasse procedures and impasse decisions as required by this subtitle.