Mont. Code Ann. § 49-2-202

The commission may require any employer, employment agency, labor union, educational institution, or financial institution or the owner, lessee, manager, agent, or employee of any public accommodation or housing accommodation subject to this chapter to post, in a conspicuous place on the premises or in the accommodation, a notice to be prepared or approved by the commission containing relevant information that the commission considers necessary to explain this chapter. Any person or institution subject to this section who refuses to comply with an order of the commission respecting the posting of a notice is guilty of a misdemeanor and shall be punished by a fine of not more than $50.