Oregon Revised Statutes Labor and Employment; Unlawful Discrimination § 662.810

(1) The Legislative Assembly recognizes and declares that agriculture is of great importance to the economy of the state and to the well-being of its citizens. Because of the perishable nature of agricultural crops, they must be harvested at the proper stage of maturity, and if this harvest is interfered with the crop may become a total loss with a resulting waste or loss of food, adverse effect upon consumer prices, loss of employment to agricultural laborers and severe dislocation of the entire economy of the state. The picketing of farms, ranches or orchards at such times as would prevent the planting or harvesting of such crops directly affects the public welfare and requires regulation by the state in the exercise of its police power.

(2) Nothing in ORS 662.805 to 662.825 shall be construed to prohibit any right of employees to organize and bargain collectively with their employers.