37-1-402. Unprofessional conduct -- complaint -- investigation -- immunity. (1) A person, government, or private entity may submit a written complaint to the department charging a licensee or license applicant with a violation of this part and specifying the grounds for the complaint.

(2) If the department receives a written complaint or otherwise obtains information that a licensee or license applicant may have violated a requirement of this part, the department may investigate to determine whether there is reasonable cause to believe that the licensee or license applicant has committed the violation. However, if the written complaint or information that a licensee or license applicant may have violated a requirement of this part is based on the licensee or license applicant's exercise of rights protected under the free exercise clause or the free speech clause of the Montana constitution or the United States constitution, then the investigation of the licensee or license applicant must cease immediately and the complaint must be dismissed.

(3) A person or private entity, but not a government entity, filing a complaint under this section in good faith is immune from suit in a civil action related to the filing or contents of the complaint.