What Are the Four Categories of Occupational Health Hazard? | Health Street (2024)

Occupational Health Hazards

Before employers can remove a hazard, they must first understand the types of occupational health hazards. There are four types of hazards: chemical, biological, ergonomic, and physical hazards.

According to the Occupational Safety and Health Administration (OSHA), employers and employees must take the following actions to identify and assess occupational health hazards:

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Collect and review information about hazards and potential hazards in the workplace.

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Conduct initial and periodic workplace assessments to identify hazards.

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Determine the underlying hazards that caused accidents, injuries, and illnesses in the workplace.

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Identify trends in injuries and illnesses by grouping similar workplace incidents together.

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Once hazards become identified, determine the severity and likelihood of incidents resulting from these hazards.

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Employers should also consider hazards from non-routine and emergency situations.

The Four Types of Hazards

There are four occupational hazard types to consider when identifying and assessing the workplace.

Chemical Hazards

Chemical hazards occur when employees are exposed to solid, liquid, or gas chemicals. These include cleaning products, vapors, fumes, flammable materials, and pesticides.

Biological Hazards

Biological hazards are usually associated with industries that work with people, animals, or infectious plant materials. These industries include healthcare, schools, daycares, nursing homes, outdoor occupations, correctional facilities, and emergency medical services. Biological exposures include blood, bacteria, viruses, mold, bodily fluids, animal droppings, plants, and insect bites.

Ergonomic Hazards

Ergonomic hazards occur when strain is put on the body from working, whether from working conditions or body positions. It's often difficult for employers to identify this occupational hazard type since body strain usually remains unnoticed until an injury occurs or becomes a long-term illness.

Physical Hazards

Physical hazards are anything within the environment that can cause harm to the body, even if it doesn't touch it. This occupational hazard type includes excessive exposure to sunlight or ultraviolet rays, extreme temperatures, radiation exposure, and excessive noise.

Other Types of Occupational Health Hazards

In addition to these four types of hazards, employers should also identify other common workplace hazards like dangers that cause trips, slips, and falls. These include spills, ice, snow, rugs, cleaning products that cause slippery floors, cords, wires, and anything else that might cause someone to fall, slip, or trip. To avoid these types of hazards, employers and employees must:

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Immediately clean spills without using cleaning products that make the floor slippery.

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Ensure stairs, hallways, and walkways are free from hazards, and floor mats and rugs lay flat.

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Don't go over the load limit on ladders, and ensure ladder extensions fully lock before using.

By identifying these common workplace hazards and developing an occupational health program, employers can avoid workplace accidents, injuries, and illnesses.

Frequently Asked Questions

What is an example of a biological hazard?

Biological hazards apply to industries working with people, infectious plant materials, and animals. These hazards include exposure to diseases from animal droppings, blood, human waste and bodily fluids, bacteria, plants, mold, viruses, and insect bites.

What is an example of a physical hazard?

Physical hazards are anything within the work environment that can cause bodily harm, whether or not the hazard touches the body. Physical hazards that cause damage without coming into contact with the body include extreme hot or cold temperatures, exposure to excessive ultraviolet light, excessive noise, and radiation exposure. Other physical hazards come in contact with the body and cause injuries such as loss of limbs, fractures, and other physical injuries.

What are the four categories of occupational health hazards?

The four categories of occupational health hazards are biological, ergonomic, chemical, and physical hazards. In addition to the four types of hazards, employers must also consider hazards leading to slips, trips, and falls.

What are the types of occupational health?

Occupational health problems are injuries, illnesses, and accidents occurring at work. Occupational health programs help eliminate or reduce these problems by identifying four types of workplace hazards. These are physical, ergonomic, chemical, and biological hazards.

Citations

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"Recommended Practices for Safety and Health Programs." United States Department of Labor, Occupational Safety and Health Administration (OSHA), https://www.osha.gov/safety-management/hazard-Identification

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"Types of Workplace Hazards." United States Department of Labor, Occupational Safety and Health Administration (OSHA), https://www.osha.gov/sites/default/files/2018-11/fy10_sh-20839-10_circle_chart.pdf

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"Young Retail Workers – Slips, Trips, and Falls." Centers for Disease Control and Prevention (CDC), https://www.cdc.gov/niosh/topics/retail/slips.html

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"Occupational Health." MedlinePlus, https://medlineplus.gov/occupationalhealth.html

What Are the Four Categories of Occupational Health Hazard? | Health Street (2024)

FAQs

What Are the Four Categories of Occupational Health Hazard? | Health Street? ›

Occupational Health Hazards

What are the 4 categories of occupational health hazards? ›

There are many types of hazards - chemical, ergonomic, physical, and psychosocial, to name a few - which can cause harm or adverse effects in the workplace.

What are the four 4 different types of workplace hazards? ›

We've listed out the 4 most common ones - physical, ergonomic, chemical, and biological. Physical hazards are often associated with uncontrolled sources of energy that could harm the body, even without necessarily touching it.

What are the 4 health hazards? ›

4 Types of Workplace Hazards
  • Physical Hazards. Physical hazards are the most common type of workplace hazards. ...
  • Biological Hazards. ...
  • Ergonomic Hazards. ...
  • Chemical Hazards.
Jan 22, 2018

What are the 4 main hazards? ›

Chemical hazards (e.g. exposure to, and inhalation of, chemicals) Physical hazards (e.g. noise, extreme temperatures) Biological hazards (e.g. infectious diseases, bacteria) Ergonomic hazards (e.g. heavy lifting, repetitive movements)

What is a Category 4 health hazard? ›

Category 4. Harmful in contact with skin. Specific target organ toxicity, single exposure, Respiratory tract irritation.

What are the 4 categories of hazard assessment? ›

Hazards are broken down into four main categories: physical, chemical, biological, and psychosocial (also known as psychological). Each category has multiple hazards.

What are the four categories of hazards from OSHA? ›

Health hazards include chemical hazards (solvents, adhesives, paints, toxic dusts, etc.), physical hazards (noise, radiation, heat, etc.), biological hazards (infectious diseases), and ergonomic risk factors (heavy lifting, repetitive motions, vibration).

What are the 4 hazard groups? ›

Human pathogens are classified by COSHH into four hazard groups (HG 1 - 4) according to these criteria.
  • Ability to cause infection.
  • Severity of the disease that may result.
  • Risk that infection will spread to the population.
  • Availability of vaccines and effective treatment.

What are the big 4 hazards? ›

The top four causes of construction fatalities are: Falls, Struck-By, Caught-In/Between and Electrocutions.

What is a Type 4 hazard? ›

4: Class 4 hazards are flammable solids. There are three divisions in this class, including flammable solids, spontaneously combustible materials and substances that are dangerous when wet, or water-reactive.

What are the top 4 hazards within OSHA? ›

The “Construction Focus Four: Fall Hazards” lesson is part of the 4-hour block consisting of segments on each of the Focus Four Hazards: Falls, Caught-In or -Between, Struck-By and Electrocution.

What are the 4 categories of safety? ›

These 4 important safety signs can be broken into categories: Prohibition, Warning, Mandatory and Emergency.

What are the 4 types of workplace hazards? ›

Below are are the four common types of hazards you should be aware of at work.
  • Physical Hazards. This is the most common type of workplace hazards. ...
  • Ergonomic Hazards. Every occupation places certain strains on a worker's body. ...
  • Chemical Hazards. ...
  • Biological Hazards. ...
  • MOBILE OFFICE LOCATION. ...
  • PASCAGOULA OFFICE LOCATION.
Jun 10, 2016

What are the four 4 main ways hazards are typically controlled? ›

What Is the Hierarchy of Controls? The hierarchy of controls is a method of identifying and ranking safeguards to protect workers from hazards. They are arranged from the most to least effective and include elimination, substitution, engineering controls, administrative controls and personal protective equipment.

Which of the 4 hazard categories below is most hazardous? ›

Category 1 is always the greatest level of hazard (that is, it is the most hazardous within that class). If Category 1 is further divided, Category 1A within the same hazard class is a greater hazard than category 1B. Category 2 within the same hazard class is more hazardous than category 3, and so on.

What are the 4 most common hazards according to OSHA? ›

The top four causes of construction fatalities are: Falls, Struck-By, Caught-In/Between and Electrocutions. Wear and use personal fall arrest equipment.

What are the four categories of OSHA? ›

OSHA standards are rules that describe the methods that employers must use to protect their employees from hazards. There are four groups of OSHA standards: General Industry, Construction, Page 10 OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION 8 Maritime, and Agriculture.

What are the occupational health hazards? ›

Health hazards include chemical hazards (solvents, adhesives, paints, toxic dusts, etc.), physical hazards (noise, radiation, heat, etc.), biological hazards (infectious diseases), and ergonomic risk factors (heavy lifting, repetitive motions, vibration).

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