What document must be displayed at the work site when field workers are working in a pesticide-treated field?

The correct answer highlights the requirement for a completed Pesticide Safety Information Series (PSIS) leaflet A-9 to be displayed at the work site when field workers are in an area treated with pesticides. This leaflet contains crucial safety information regarding pesticide use, potential hazards, and protective measures, ensuring that workers are informed and can take necessary precautions while working in treated fields.

Displaying this leaflet is vital because it serves as a readily accessible reference point for workers, enabling them to understand the pesticides that have been applied, the risks they may face, and specific actions to take in case of an emergency. Compliance with this requirement helps to promote safety and reduce the risk of pesticide exposure, which is a fundamental aspect of workplace safety in agricultural settings.

Other options relate to documentations or information that may be important for various aspects of pesticide application and worker safety, but they do not fulfill the specific legal requirement to display pertinent safety information at the work site during pesticide application. Therefore, they do not meet the specific regulatory obligation set forth for protecting field workers.