Mich. Comp. Laws § 800.322

Sec. 2. As used in this act: (a) "Correctional industries products" means all services provided, goods, wares, and merchandise manufactured or produced, wholly or in part, by inmates in any state correctional institution, but does not include either of the following: (i) Products manufactured with inmate labor or services rendered with inmate labor in a private manufacturing or service enterprise established under section 7a. (ii) Goods or services provided by inmate labor assigned to a private contractor to be used solely within a correctional institution, jail, or reentry facility. (b) "Correctional institution" means a state prison, prison facility, or other prison institution, correctional camp, community corrections center, correctional farm, state reformatory, or probation recovery camp, owned, operated, leased, supervised, or contracted for by this state.