I can give you some background on the masks as a person who has had to wear one for the last 18 months, a major oil and gas company I consult to made it compliance for all personnel to wear face masks at site, field workers and office based.
March of 2020 wearing a medical mask was now part of the dress kit for work, come June 2020 they now said all employees must wear N95 masks, what a jolly the medical masks was to wear, the N95 is horrible and I have my own office where I can take it off and close the door, many can’t and it’s a sackable offence now also.
Come May 2021 95% of personnel all vaccinated, still wearing N95 masks, June 2021 no mask required finally!!🥳
The head medical advisor changed company (40,000 staff employees) legislation that masks are not part of the dress code any longer, I asked our site based doctor and he told me the company had to change its legislation for defamation purposes.