Cool in the Heat
Drink plenty of water – about 1 cup of cool water every 15
to 20 minutes, even if not thirsty – and avoid alcohol, coffee,
tea and caffeinated soft drinks that dehydrate the body.
Help workers adjust to the heat by assigning a lighter workload
and longer rest periods for the first five to seven days of intense
heat. This process needs to start all over again when a worker returns
from vacation or absence from the job.
Wear lightweight, light-colored, loose-fitting clothing. Change
clothes if they get completely saturated.
Use general ventilation and spot cooling at points of high heat
production. Good airflow increases evaporation and cooling of the
Train first-aid workers to recognize and treat the signs of heat
stress and be sure all workers know who has been trained to provide
aid. Also train supervisors to detect early signs of heat-related
illness and permit workers to interrupt their work if they become
Consider a worker's physical condition when determining fitness
to work in hot environments. Obesity, lack of conditioning, pregnancy
and inadequate rest can increase susceptibility to heat stress.
Alternate work and rest periods, with rest periods in a cooler area.
Shorter, more frequent work-rest cycles are best. Schedule heavy
work for cooler times of the day and use appropriate protective
Monitor temperatures, humidity and workers' responses to heat regularly.