Forklift operators typically need refresher training every three to five years. However, there are situations that may require more frequent training. For example, refresher training should be conducted if an operator has been involved in an accident or near-miss, if they have been absent for an extended period, or if there have been significant changes in the workplace, such as new equipment or updated safety protocols. These intervals help ensure operators remain up-to-date on safe practices and are able to operate forklifts effectively and compliantly.