The Globally Harmonized System (GHS) is an international approach to hazard communication, providing agreed criteria for classification of chemical hazards, and a standardized approach to label elements and safety data sheets. The GHS was negotiated in a multi-year process by hazard communication experts from many different countries, international organizations, and stakeholder groups. It is based on major existing systems around the world, including OSHA’s Hazard Communication Standard and the chemical classification and labeling systems of other US agencies.

The three major areas of change are in hazard classification, labels, and safety data sheets.

• Hazard classification: The definitions of hazard have been changed to provide specific criteria for classification of health and physical hazards, as well as classification of mixtures. These specific criteria will help to ensure that evaluations of hazardous effects are consistent across manufacturers, and that labels and safety data sheets are more accurate as a result.
• Labels: Chemical manufacturers and importers will be required to provide a label that includes a harmonized signal word, pictogram, and hazard statement for each hazard class and category. Precautionary statements must also be provided.
• Safety Data Sheets: Will now have a specified 16-section format.

Employers are legally required to provide an awareness training to workers when first beginning a job that entails possible exposure to hazardous chemicals. Additionally, anytime a new potential hazard is present employers need to provide additional awareness training. 

This certification is nationally recognized and valid for 2 years. Your employer is responsible for providing awareness training during your initial onboarding and when any new hazardous chemicals are introduced into the workplace. 

For more information, contact your local or Regional OSHA office (listed in the telephone directory under United States Government – Department of Labor – Occupational Safety and Health Administration). OSHA also has a Home Page on the Internet.