Health and Safety Representatives (HSRs) can direct a worker in their work group to stop unsafe work. HSRs can do this if they have:
reasonable concern that an immediate or imminent hazard poses serious risk, and
already consulted and attempted to resolve the issue with the business or undertaking. This does not apply if the risk is so serious and immediate or imminent that it is not reasonable to consult first.
HSRs must inform the workplace of any direction that has been given to cease unsafe work. HSRs must have completed their initial training under the model WHS laws to cease work.