Overview: The OSHA 8 Hour HAZWOPER Refresher is intended for workers who need to refresh an existing 24 or 40-hour HAZWOPER certification.


The Hazardous Waste Operations and Emergency Response Standard (HAZWOPER) applies to five distinct groups of employers and their employees. This includes any employees who are exposed or potentially exposed to hazardous substances -- including hazardous waste -- and who are engaged in one of the operations as specified by 1910.120(a)(1)(i-v) and 1926.65(a)(1)(i-v).