Occupational hazard

At-risk workers without appropriate safety equipment

An occupational hazard is a hazard experienced in the workplace. Occupational hazards can encompass many types of hazards, including chemical hazards, biological hazards (biohazards), psychosocial hazards, and physical hazards.

Chemical hazards

Main article: Chemical hazard

Chemical hazards are a subtype of occupational hazards that involve dangerous chemicals. Exposure to chemicals in the workplace can cause acute or long-term detrimental health effects. There are many classifications of hazardous chemicals, including neurotoxins, immune agents, dermatologic agents, carcinogens, reproductive toxins, systemic toxins, asthmagens, pneumoconiotic agents, and sensitizers.

Biological hazards

Main article: Biological hazard

Biological agents, including microorganisms and toxins produced by living organisms, can cause health problems in workers. Influenza is an example of a biohazard which affects a broad population of workers.

Those who work outdoors encounter numerous biological hazards, including bites and stings from insects, spiders, snakes and scorpions, contact dermatitis from exposure to urushiol from poisonous Toxicodendron plants, Lyme disease, West Nile virus, and coccidioidomycosis. According to NIOSH, outdoor workers at risk for these hazards "include farmers, foresters, landscapers, groundskeepers, gardeners, painters, roofers, pavers, construction workers, laborers, mechanics, and any other workers who spend time outside."

Health care professionals are at risk to exposure to blood-borne illnesses (such as HIV, hepatitis B, and hepatitis C) and particularly to emerging infectious diseases, especially when not enough resources are available to control the spread of the disease. Veterinary health workers, including veterinarians, are at risk for exposure to zoonotic disease. Those who do clinical work in the field or in a laboratory risk exposure to West Nile virus if performing necropsies on birds affected by the virus or are otherwise working with infected tissue.

Other occupations at risk to biological hazard exposure include poultry workers, who are exposed to bacteria; and tattooists and piercers, who risk exposure to blood-borne pathogens.

Psychosocial hazards

Main article: Psychosocial hazard

Psychosocial hazards are occupational hazards that affect someone's social life or psychological health. Psychosocial hazards in the workplace include occupational burnout and occupational stress, which can lead to burnout.

Physical hazards

Main article: Physical hazard

Physical hazards are a subtype of occupational hazards that involve environmental hazards that can cause harm with or without contact. Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards.