Maryland Code, State Finance and Procurement § 19-101

(a) It is the policy of the State not to enter into a contract with any business entity that has discriminated in the solicitation, selection, hiring, or commercial treatment of vendors, suppliers, subcontractors, or commercial customers on the basis of race, color, religion, ancestry or national origin, sex, age, marital status, sexual orientation, gender identity, or on the basis of disability or any otherwise unlawful use of characteristics regarding the vendor's, supplier's, or commercial customer's employees or owners.

(b) Nothing in this title shall be construed to prohibit or limit otherwise lawful efforts to remedy the effects of discrimination that have occurred or are occurring in the marketplace.

(c) A complaint of discrimination shall be filed within 4 years after the date the cause of action accrues.