Maryland Code, Labor and Employment § 3-605

(a)(1) Subject to the requirement of paragraph (2) of this subsection, if a principal violates § 3-604 of this subtitle, a sales representative whom the violation affects is entitled to bring an action against the principal to recover up to 3 times the amount of all commissions that the principal owes to the sales representative.

(2) At least 10 days before an action is brought under this subsection, the sales representative shall give the principal written notice of intent to bring the action.