As temperatures rise, both workers and employers need to be aware of the risks and implement measures to keep themselves and their workplaces safe. Sweating on a hot day cools your body down, but if you work in a hot environment, whether it’s outdoors or indoors, this might not be enough. If your body heats up faster than it can cool itself, you experience heat stress, and this can lead to serious heat disorders, explains Jeanette Campbell, WorkSafeBC senior occupational hygienist. If not recognized and treated early, heat stress can lead to heat exhaustion and heat stroke. And heat stroke can result in cardiac arrest and/or other serious injuries. Heat stress can come from working outdoors in the hot sun in industries such as construction, farming, and forest firefighting. Or it can occur indoors, particularly in boiler rooms, pulp and paper mills, industrial laundries, and restaurant kitchens.