Farmers, nursery operators, or farm laborers are not subject to the provisions of chapters 29 — 38 of this title unless the farmers or agricultural employers employ twenty-five (25) or more farm laborers or agricultural employees for thirteen (13) consecutive weeks. Farmers, nursery operators, or agricultural employers who or that employ twenty-five (25) or more farm laborers or agricultural employees for thirteen (13) consecutive weeks are not subject to the provisions of chapters 29 — 38 of this title if the farmer or agricultural employer maintains health and disability insurance for all of its farm laborers or agricultural employees; provided, that the health and disability insurance premium exceeds the premium for workers’ compensation insurance. Farmers or agricultural employers who or that employ twenty-five (25) or more farm laborers or agricultural employees for thirteen (13) consecutive weeks are subject to chapters 29 — 38 of this title for those agricultural enterprises that produce greenhouse crops, fruit and vegetable crops, herbaceous crops, sod crops, viticulture, viniculture, floriculture, feed for livestock, forestry, dairy farming, aquaculture, the raising of livestock, fur-bearing animals, poultry and eggs, bees and honey, mushrooms, and nursery stock.