La. Const. art. X, § 1

(A) State Civil Service. The state civil service is established and includes all persons holding offices and positions of trust or employment in the employ of the state, or any instrumentality thereof, and any joint state and federal agency, joint state and parochial agency, or joint state and municipal agency, regardless of the source of the funds used to pay for such employment. It shall not include members of the state police service as provided in Part IV of this Article or persons holding offices and positions of any municipal board of health or local governmental subdivision.

(B) City Civil Service. The city civil service is established and includes all persons holding offices and positions of trust or employment in the employ of each city having over four hundred thousand population and in every instrumentality thereof. However, paid firemen and municipal policemen may be excluded if a majority of the electors in the affected city voting at an election held for that purpose approve their exclusion. The election shall be called by the municipal governing authority within one year after the effective date of this constitution.