Mich. Comp. Laws § 290.667

Sec. 17. (1) The director may enter into marketing agreements with producers, handlers, or other parties where such agreements will tend to supplement or aid in the accomplishment of the objectives of a marketing program. (2) The execution of a marketing agreement does not affect the adoption, administration, or enforcement of any marketing program under this act. The director may hold a concurrent hearing upon a proposed marketing agreement and a proposed marketing program in the manner provided in this act, giving due notice and opportunity for hearing for a marketing agreement. (3) When a marketing agreement is proposed for any agricultural commodity or agricultural commodity input, the director shall call a public hearing. The director's decision to enter into or not enter into a marketing agreement is subject to the same requirements for justification on the basis of factual evidence introduced at the hearing. A marketing agreement, if recommended by the director, shall become effective when signed by the director and the other parties to the agreement.