A physical hazard is an agent, factor or circumstance that can cause harm with or without contact. They can be classified as type of occupational hazard or environmental hazard. Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards.
Public hazards can be physical, chemical and biological hazards. Industry workers are prone to the public hazards due to overexposure to magnetic field, physical vibrations and radiation.