California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 3 - General Plant Equipment and Special Operations
Article 13 - Agricultural Operations
Section 3439 - First-Aid Kit

(a) There shall be adequate first-aid materials immediately available at the farm headquarters and/or on worker transportation buses. Such materials shall be kept in a sanitary and usable condition. A frequent inspection shall be made of all first-aid materials, which shall be replenished as necessary. In the case of employers whose workers are widely scattered in small crews that are contacted by a traveling foreman, adequate protection may be accomplished by having a first-aid kit in the foreman's car or vehicle.

(b) At remote locations, provisions must be made in advance for prompt medical attention in case of serious injuries. This may be accomplished by on-the-site facilities or proper equipment for prompt transportation of the injured person to a physician or communication system for contacting a doctor or combinations of these that will avoid unnecessary delay in treatment. There shall be at least 1 employee for every 20 employees at any remote location with training for the administering of emergency first aid.