Mo. Rev. Stat. § 379.893: Rules and regulations on modification of rate base, authority of director — procedure.

The director shall have authority to promulgate reasonable rules and regulations limiting or modifying any aspect of any commercial casualty insurance rating plan or rating system which involves a possible modification of the base rate. No rule or portion of a rule promulgated under the authority of this chapter shall become effective unless it has been promulgated pursuant to the provisions of section 536.024.