Final answer:
The exposure control plan training for acupuncture office personnel should take place before they start working in the acupuncture office.
Step-by-step explanation:
The exposure control plan training for acupuncture office personnel should take place before the personnel start working in the acupuncture office.
This training is crucial for ensuring that the office personnel are aware of the potential risks and hazards associated with their work, including the risk of exposure to pathogens.
By providing the training before they start working, the office personnel can be properly educated on the necessary precautions and safety measures to prevent exposure and protect themselves and others.