N.H. Rev. Stat. Ann. § 170-E:8-a

The department shall not retaliate against an applicant, licensee, or permittee for any reason. Any applicant, licensee, or permittee who believes that the department's actions regarding licensure or permit status, or the findings of a monitoring visit, were retaliatory in nature may submit a complaint to the commissioner. The department shall investigate the complaint in order to take appropriate action against any department employee having found to be in violation of this section.