La. Stat. tit. 33 § 2538
Each board may adopt and execute rules, regulations and orders necessary or desirable effectively to carry out the provisions of this Part, and shall do so when expressly required by this Part. No rule, regulation or order shall be contrary to or in violation of any provisions, purpose or intent of this Section or contrary to any other provisions of law. The board may amend or repeal any rule or part thereof in the same manner provided herein for the adoption of the rule.
A board may adopt any rule, either in its proposed or revised form, after holding a public hearing at which any officer or employee of the government of which the fire or police service is a part, and any private citizen and the state examiner shall be given an opportunity to show cause why the proposed rule or amendment, or any part thereof, should not be adopted. Before the board holds this public hearing, it shall furnish at least thirty days notice in advance of the date, time and place therefor to the mayor, commissioner of public safety, and any other municipal commissioner whom the rule may in any way affect, or the parish governing authority or fire protection district governing authority having jurisdiction over the fire or police service, and to the chief and each station of the departmental services to be affected by the adoption of any such rule, and to the state examiner. A copy of all proposed rules to be discussed at any hearing shall be furnished with all notices. Each notice and copy of proposed rule furnished the various stations of the fire and police departments shall be posted upon the bulletin board of each station for a period of at least thirty days in advance of the hearing.
Within thirty days after the board has adopted any rule, whether it is a new rule, an amendment of an existing rule, or an abolition in whole or part thereof, it shall furnish an official copy thereof to all persons and places set forth above.
Rules adopted under the authority of this Part shall have the force and effect of law.
La. R.S. § 33:2538