ORS 662.820

An employer of persons employed to harvest perishable agricultural crops shall display, in a conspicuous manner about the farm, ranch or orchard where perishable agricultural crops are being harvested, notices, written in the English and Spanish languages, of sufficient size and number to reasonably inform the employees and stating that ORS 662.815 prohibits any person other than a regular employee, as defined in ORS 662.805, from picketing a farm, ranch or orchard where perishable agricultural crops are produced while such crops are being harvested.