Maryland Courts and Judicial Proceedings Section 5-619
§ 5-619.
  (a)   The following persons or agencies shall be immune from civil or criminal liability in connection with the conducting of a criminal background investigation under Title 5, Subtitle 5, Part VI of the Family Law Article or a criminal history records check under Title 19, Subtitle 18, of the Health - General Article:
    (1)   An employer that in good faith relies on a criminal background investigation or criminal history records check to deny or terminate an individual's employment or participation in a facility;
    (2)   A State or local agency that in good faith relies on a criminal background investigation or criminal history records check of an employer to grant, deny, suspend, or revoke licensure, registration, approval, or certification of a facility;
    (3)   A local department of social services that in good faith relies on a criminal background investigation to make a decision concerning the placement of a child committed to it, including a decision to remove a child from a particular facility or home; and
    (4)   A State or local agency that in good faith participates in the making of a criminal background investigation or criminal history records check of an employee or employer.
  (b)   The failure of an employer to require a criminal background investigation of an individual when not required under Title 5, Subtitle 5, Part VI of the Family Law Article or a criminal history records check when not required under Title 19, Subtitle 18, of the Health - General Article may not give rise to civil or criminal liability on the part of the employer for failure to conduct a criminal background investigation.