Basically the opposite of this.
I know someone who works in an English secondary school (ages 11 - 18), and they've said that their headteacher has forbidden staff from wearing face masks because they'll "cause distress."
But surely this can't be demanded of them, and is more of a request (which can be ignored)?
Despite this, the vast majority of staff (and students) have chosen not to wear masks, even though they may want to - they don't wear them because "nobody else does." Maybe they're afraid of losing their jobs, although surely they couldn't be fired for adhering to government advice.
This head teacher seems to be burying their head in the sand and acting like everything is normal, which I find somewhat bizarre. From what I've heard about conditions in the school, its response to the pandemic has been fairly shambolic, and staff don't have much confidence or feel safe.