Maryland Code, Labor and Employment § 3-421

(1) the work is a consequence of an emergency situation which could not have been reasonably anticipated;

(2) the emergency situation is nonrecurring and is not caused by or aggravated by the employer's inattention or lack of reasonable contingency planning;

(3) the employer has exhausted all good faith, reasonable attempts to obtain voluntary workers during the succeeding shifts;

(4) the nurse has critical skills and expertise that are required for the work;

(5) the standard of care for a patient assignment requires continuity of care through completion of a case, treatment, or procedure; and

(1) a condition of employment includes on-call rotation; or

(2) the nurse works in community-based care.

(f)(1) Except as provided in subsections (c) and (d) of this section, a nurse may not be considered responsible for the care of a patient beyond the nurse's predetermined work schedule if the nurse:

(2) The employer shall exhaust all good faith, reasonable attempts to ensure that appropriate staff is available to accept responsibility for a patient's care beyond a nurse's predetermined work schedule.