Michigan Compiled Laws, Chapter 325. Health § 325.1003a

(a) “Agricultural employer” means a person, corporation, association, or other legal entity that employs 1 or more persons in hand labor operations for the production of food, fiber, or other agricultural products including seed, seedlings, plants, or parts of plants.

(b) “Hand labor operations” means agricultural activities performed by hand or with hand tools and includes the cultivating, weeding, planting, and harvesting of vegetables, nuts, fruits, seedlings, and other crops, including mushrooms; packing produce by hand into containers, whether done on the ground, on a moving machine, or in a temporary packing shed located in a field; and operations performed in conjunction with hand labor operations. Hand labor operations does not include logging operations, the care or feeding of livestock, or activities conducted in permanent structures, including canning facilities or packing houses.