No jab, no job.
This must be done by April 2022, thus avoiding an exodus of reluctant staff over the winter.
This could be an irrelevant exercise.
We will still be going through winter with hundreds of thousands of unvaccinated HNS hospital and care staff and come next spring it is thought (hoped) that so many of us will be double vaccinated and boosted that the main epidemic will be over.
If it was thought to be necessary then, it should have been a priority when vaccinations started, but the fear was that many staff would elect to leave - and not be (able to be) replaced. That is still the fear, hence the delay.