The document provides an overview of the Globally Harmonized System (GHS) for classifying chemicals and communicating hazard information. It discusses what GHS is, why it is needed, its goals and benefits. It describes the scope of GHS in areas like transport, workplace, consumer and pesticides. It outlines the key elements of GHS including classification criteria for physical, health and environmental hazards, as well as mixtures. It discusses hazard communication through labels and safety data sheets, covering required label elements like symbols, signal words, hazard and precautionary statements. The document serves as a training program on the GHS system.