Md. Code, Local Government § 12–103

(a) This section applies to all counties except:

(1) Anne Arundel County;

(2) Baltimore City;

(3) Baltimore County;

(4) Cecil County;

(5) Howard County;

(6) Prince George’s County; and

(7) Worcester County.

(b) The provisions of §§ 9–105 and 9–106 of this article apply to an act, an

ordinance, or a resolution adopted by a commission county under this section.

(c) The governing body of a county may establish a merit system in

connection with the appointment of county officials and employees not elected or

appointed under the Maryland Constitution or public general law of the State.