Maryland State Personnel and Pensions Section 3-502
§ 3-502.
  (a)   Collective bargaining shall include all matters relating to wages, hours, and other terms and conditions of employment.
  (b)   Collective bargaining may not include negotiations relating to the right of an employee organization to receive service fees from nonmembers.
  (c)   Notwithstanding subsection (a) of this section, the representatives of the State, a system institution, Morgan State University, St. Mary's College of Maryland, and Baltimore City Community College:
    (1)   shall not be required to negotiate over any matter that is inconsistent with applicable law; and
    (2)   may negotiate and reach agreement with regard to any such matter only if it is understood that the agreement with respect to such matter cannot become effective unless the applicable law is amended by the General Assembly.