According to the European Community guidelines (European Commission. Guidance on risk assessment at work. Office for Official Publication of the European Communities. Luxembourg 1996), hazard is defined as the intrinsic property or ability of a specific factor (e.g. working materials or equipment, working methods or practices) to potentially cause harm.
On the other hand, risk is defined as the probability of attaining the potential harm threshold under the conditions of employment of a certain factor and/or exposure to this factor.
Finally, an occupational risk factor is any physical, chemical or biological agent present in the workplace that is able to harm the worker.


Hazards


Indoor air quality

Air conditioning systems

Photocopying machine

Shavings furniture

Insulating materials

Videoterminals

Illumination

Medications

Special waste assimilable to urban waste

Hospital treated waste

Sharp hospital tools

Electricity

Photocomposition

Wood dust
Risk Factors

Physicals

Laser

Microclimate

Ionizing radiations

Ultraviolet rays

Radio frequencies and microwave radiations

Noise

Ultrasounds

Chemicals

Strong acids and bases

Organic acids

Alcohols, ethers, esters, halogen hydrocarbons

Aldehydes, ketones

Anaesthetics

Chemotherapic drugs

Radionuclides

Detergents

Formaldehyde

Welding fumes

Glutaraldehyde

Radiological contrast agents

Ethylene oxide

Organic and inorganic salts

Biologicals

Mycobacterium tuberculosis

Laboratory and biological risks

Hepatitis B virus

Hepatitis C virus

Human Immunodeficiency Virus

Others

Allergy-inducing agents Allergy-inducing agents

Manual weight lifting

Stress