If the person has symptoms of any sort you could consider reasonable adjustments to work; Hep B can cause fatigue, but serious symptoms would mean absence from work. There is no need for any notification. Hep B is a blood-born viral infection, but then all human bodily fluids should be treated as hazardous substances in the workplace whether the source is known to have an infectious disease or not; for every known Hep B carrier (for example) there is a number of people who have not been diagnosed. So the short answer is you don't need to do anything you shouldn't already be doing, John

I would seek permission (maybe via Occ Health ) team from the individual as to whether they may allow the first aiders in the business to be informed of the situation. If the individual will not allow the name to be disclosed (or you may not find this a suitable approach with regard to confidentiality) maybe advise the First Aiders of the risks of treating staff with Hep B etc..

There may be a difference between an office environment and a generalised healthcare one that would influence how to respond here. Yes, in general and as per first aider training the assumption should be that all body fluids are infective in some way or another. But think of an office with a well-established team who know each other well, socialise, gossip etc. In those circumstances, someone else probably knows or at least suspects that an individual may have a health problem. It then makes sense to ask the indivdual, either directly themselves, or indirectly through the employer, to tip off their first aider as an additional precaution. It's a way of nailing speculation etc. and will be as confidential as any other personal information is in such a place. Jim