Climatic working conditions are the temperature and humidity in which work is carried out. "Physical work") generates heat in the body. To regulate it, the human body has a system that allows it to maintain a constant internal body temperature around 36.5 °C. Thermal regulation and the feeling of thermal comfort depend on the heat produced by the body and exchanges with the environment. All of this is a function of:.

Poor thermohygrometric conditions can cause negative effects on health that will vary depending on the characteristics of each person and their ability to acclimatize, thus we can find colds, frostbite, dehydration, heat stroke and increased fatigue, which can affect the occurrence of accidents.