Are you ok with vaccinated employees in stores not wearing a mask?

Assuming you agree with requiring mask wearing in stores, how do you feel about employers allowing fully vaccinated staff to not have to wear a mask?

The employee would have to show proof of vaccination.

Customers would still be expected to wear a mask no matter what their vaccine status.

I am not talking about requiring staff to get vaccinated, only talking about allowing vaccinated staff to not wear a mask.