OSHA Releases New HCS Interpretations Amid Ongoing Rulemaking

OSHA has released four new regulatory interpretation letters that clarify requirements for companies' safety data sheets (SDS) under the Hazard Communication Standard (HCS), including new guidance on labeling variant products and lithium-ion batteries even as the agency is weighing a broader overhaul of the standard itself. The four letters are dated between October 2020 and August 2021 but were only posted to OSHA’s website for standard interpretations the week of Sept. 20. Some are signed by Patrick J. Kapust, former...