Michigan Compiled Laws, Chapter 500. Insurance Code of 1956 § 500.2019

Sec. 2019. The following are defined as unfair methods of competition and unfair and deceptive acts or practices in the business of insurance:

Making or permitting any unfair discrimination between individuals of the same class and equal expectation of life in the rates charged for any contract of life insurance or of life annuity or in the dividends or other benefits payable thereon, or in any other of the terms and conditions of such contract.