According to the Occupational Safety and Health Administration (OSHA), employees who are expected to use portable fire extinguishers must receive training upon initial assignment and at least annually thereafter. This requirement is outlined in OSHA standard 29 CFR 1910.157(g), which mandates that employers provide training to familiarize employees with the general principles of fire extinguisher use and the hazards involved with early-stage firefighting.

The annual refresher training ensures that employees retain their knowledge and remain confident in using extinguishers during emergencies. OSHA does not specifically require hands-on training every year, but it is considered best practice to include practical exercises when possible. For workplaces with a higher risk of fire or specialized fire hazards, more frequent or advanced training may be appropriate.

Regular training not only meets OSHA requirements but also helps ensure the safety of all employees by preparing them to respond effectively during a fire emergency.