If the department, as the result of an administrative hearing, or the court determines that the respondent has engaged in or is engaging in a discriminatory practice, the department or the court may enjoin the respondent from engaging in the unlawful practice and order temporary or permanent injunctions, equitable relief, and backpay limited to no more than two years from the date a minimally sufficient complaint was filed with the department or the court. Neither the department nor an administrative hearing officer may order compensatory or punitive damages under this chapter. Interim earnings or amounts earnable with reasonable diligence by the person discriminated against reduce the backpay otherwise allowable. In any action or proceeding under this chapter, the court may grant the prevailing party a reasonable attorney’s fee as part of the costs. If the court finds that the complainant’s allegation of a discriminatory practice is false and not made in good faith, the court shall order the complainant to pay court costs and reasonable attorney’s fees incurred by the respondent in responding to the allegation.