Mississippi Code Title 71. Labor and Industry § 71-15-9

(1) The state shall retain the exclusive authority to require an employer or multiemployer association to enter into a project labor agreement.

(2) This section does not prohibit an employer or any other person covered by the National Labor Relations Act compiled in 29 USCS Section 151 from entering into agreements or engaging in any other activity protected by law. This section may not be interpreted to interfere with the labor relations of persons covered by the National Labor Relations Act.

(3) Relief that would interfere with the labor relations of persons covered by the National Labor Relations Act may not be granted under the provisions of this section.