OSHA shifted directions and decided to include disclosure of the voluntary threshold limit values (TLVs) developed by the American Conference of Governmental Industrial Hygienists in its newly unveiled final rule aligning its hazard communication standard (hazcom) with the Globally Harmonized System of classifying and labeling chemicals (GHS), along with the compulsory OSHA permissible exposure limits (PELs). The inclusion of TLVs clears up a longtime concern from worker health and safety advocates who argue they are needed because many PELs are outdated and inadequate, but goes against the wi
December 29, 2025
