Discussion of the new regulations affecting Hazard Communication and how these regulations interact with Global Harmonization. OSHA's Hazard Communication Standard has been in effect since 1986, with very few changes. Now OSHA has updated the Standard to make it compatible with the UN's International Standard, as well as those practices in the European Union. The changes are being phased in over the next three years. The first wave of change took effect in December, 2013. New phases of the changes follow in rapid succession.