Final answer:
When thermal conditions cannot be controlled and work can cause distress or illness, the code requires employers to take action to protect workers.
Step-by-step explanation:
The code requires employers to take precautions to protect workers when it is not reasonably practicable to control temperature and the nature of the work can result in discomfort or illness. This can involve taking steps like giving workers the proper personal protective equipment (PPE), such as cooling vests or insulated clothes, scheduling regular rest periods in a cool location, and keeping an eye out for symptoms of heat-related illnesses or overheating. In order to reduce exposure to extremely high temperatures, employers might also need to review and adjust work schedules or tasks.