Mich. Comp. Laws § 445.2583

Sec. 3. (1) A person shall not promote or participate in a pyramid promotional scheme. A limitation as to the number of individuals who may participate or the presence of additional conditions affecting eligibility for the opportunity to receive compensation under a plan or operation does not change the identity of the plan or operation as a pyramid promotional scheme. (2) A person that promotes a pyramid promotional scheme is guilty of a felony punishable by 1 or more of the following: (a) Imprisonment for not more than 7 years. (b) A fine of not more than $10,000.00 per violation. (3) A person that knowingly participates in a pyramid promotional scheme is guilty of a misdemeanor punishable by imprisonment for not more than 90 days or a fine of not more than $1,000.00, or both.