Hand Ache Vibration Syndrom
Heart Ache Valentive Syndrome
Health Activity Vector Search
Hand-Arm Vibration Syndrome
Remove the worker from the task, reassign them to a task they can handle, and have a worker who is more experienced use the tool instead.
Stop the act, talk to the worker about why they were doing the task that way, and explain what the expectations (i.e., the correct way to use the tool) are going forward.
Contact the worker's manager immediately and have the worker thrown off the job.
Stop the act, call everyone on the job over to the area, chastise the worker in front of everyone, and then show everyone how to use the tool safely.