Mont. Code Ann. § 18-1-110

18-1-110 . Hiring preference for residents of Indian reservations for state construction projects within reservation -- rules. (1) For any contract awarded by a state agency for a state construction project within the exterior boundaries of an Indian reservation, except a project partially funded with federal-aid money from the United States department of transportation or when residency preference laws are specifically prohibited by federal law, there must be inserted in the bid specification and the contract a provision, in language approved by the commissioner of labor and industry, implementing the requirements of this subsection. The bid specification and the contract must provide that a preference in hiring for positions of employment be given to Indian residents of the reservation who have substantially equal qualifications for any position. For the purposes of this section, the definitions in 2-18-111 apply.

(2) The commissioner of labor and industry shall enforce this section, investigate complaints of its violation, and may adopt rules to implement this section.