Mo. Rev. Stat. § 376.500
No life insurance company doing business in this state shall make or permit any distinction or discrimination in favor of individuals between insurants (the insured) of the same class and equal expectations of life in the amount or payment of premiums or rates charged for policies of life or endowment insurance, or in the dividends or other benefits payable thereon, or in any other of the terms and conditions of the contracts it makes; nor shall any such company, or agent thereof, make any contract of insurance or agreement as to such contract other than as plainly expressed in the policy issued thereon; nor shall any such company, or any officer, agent, solicitor or representative thereof, pay, allow or give, or offer to pay, allow or give, directly or indirectly, as inducement to insurance, any rebate of premium payable on the policy, or any special favor or advantage in the dividends or other benefits to accrue thereon, or any paid employment or contract for services of any kind, or any valuable consideration or inducement whatever, not specified in the policy contract of insurance; or give, sell or purchase, or offer to give, sell or purchase, as inducement to insurance or in connection therewith, any stocks, bonds or other securities of any insurance company or other corporation, association, or partnership, or any dividends or profits to accrue thereon, or anything of value whatsoever. The provisions of this section shall also apply to all companies incorporated under the provisions of sections 377.200 to 377.460.
§ 376.500, RSMo