The document discusses the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), which is an international system to standardize the classification and labeling of chemicals. It summarizes the major changes to the Hazard Communication Standard (Haz Com) in the United States to align with GHS, including standardized health and physical hazard criteria, new pictograms and label elements on containers, and a 16-section format for Safety Data Sheets. The implementation timeline requires training by December 2013, with full compliance with revised provisions by June 2015 and certain exceptions through June 2016.