Contractors must have adequate arrangements in place for supervision of their employees. This may mean the full time presence of an on site supervisor, or the appointment of one of their employees as a temporary supervisor who has access to further supervision from the contractor, if required. The level of supervision will depend on:
• Magnitude of risk from the work.
• Complexity of the work.
• Number of contractor employees working in the area.
• Number of different contract companies working in the area.