Whether you are working or doing sports, if you sweat you lose essential nutrients. Especially when undergoing strenuous activity, you are more likely to lose more nutrients and eventually get dehydrated. Having an adequate supply of electrolytes, will combat dehydration and allows for effective hydration.
Heat makes you lose more fluids regardless of work conditions. The loss of fluids increases when you factor in PPE, the kind of safety uniforms or clothing worn and how hard the job is on the body. Because of these factors, there is a great potential for dehydration, heat stress and heat illnesses.