Squadgy
I do not know what any H&S regulations specify, but - assuming that you imply that you are required to share headsets - surely this could be raised on a "common sense" basis with management? If not, do you have union representation?
Even in the absence of specific H&S requirements, you could always quote "custom and practice" as the vast majority of ATSUs provide individual headsets for good reason which I am sure they would be willing to specify.
Another valid comparison would be handset telephones that are used by several people - is there not a requirement, or at least a practice, at many places (including offices) of these being regularly disinfected for reasons of hygiene?
2 s