A hazard is defined as a chance; a chance of being injured or harmed by a possible source of danger. Jobsites are filled with many different hazards- whether it's the task you are performing, task others are performing around you, equipment, chemicals, heat sources, or weather conditions. Hazards should be recognized and eliminated through engineering controls, administrative controls, and as a last resort, personal protective equipment.
According to OSHA, caught-on or -between hazards collectively is one of the four deadliest dangers found on a construction site, and one of the biggest hazards for workers in industrial processing as far as unguarded machines and equipment. Workers' fingers, arms, hair, and other body parts as well as protective clothing can be caught or entangled in unguarded machine parts or equipment, which is known as a caught-in or -between hazard.