Md. Code, Labor and Employment § 3–1209

(a) An employer may not:

(1) violate any provision of this subtitle;

(2) hinder, delay, or otherwise interfere with the Commissioner or an authorized representative of the Commissioner in the enforcement of this subtitle; or

(3) discharge or otherwise discriminate against an employee because the employee:

(i) has requested or taken parental leave authorized under this subtitle;

(ii) makes a complaint to the employer, the Secretary, or another person;

(iii) brings an action under this subtitle or a proceeding that relates to the subject of this subtitle or causes the action or proceeding to be brought; or

(iv) has testified or will testify in an action under this subtitle or a proceeding that relates to the subject of this subtitle.

(b) The Commissioner may bring an action for injunctive relief and damages against a person who violates subsection (a)(1) or (3) of this section.