@djsumdog Well, there have never been any mandates, but each company decides its own rules, which are all identical 99% of the time anyway.
Whether they're enforced or not depends on the employer or employee, depending on who genuinely believes in the covAIDS cult.

So sometimes you have to have a face diaper on during job interviews, sometimes they even ask you to put it on during remote job interviews (which makes it extra ridiculous), most of the time they don't care either way.

When it comes to employees, most stores don't care if you wear one or not, but some stores will literally kick you out or deny you service if you don't put on a face diaper, which is literally illegal according to both the artificial "law" and the constitution, and even come with a PENALty of up to 3 years in prison + 5 million yen fine if they force people to do something against their will, but even if I point that out to them, they don't care because apparently their own made up rules go above government made up rules, even though they're those same people tend to be the biggest bootlickers in the entire world.

I've been to Akihabara and Shinjuku over the weekend, I noticed only a few maskless Japanese, and only a few masked tourists.
Most Japanese were masked, whereas most foreign tourists were maskless.
All the otaku-related stores would kick you out right at the frontdoor, they even have some elderly at the door to force you to put on a face diaper.
All the electronics-related stores on the other hand don't give a fuck.
Restaurants might or might not care, some do and most don't.

RNG "test" which is not a test or a proof of being 3 times lethally injected is only required if you fly into the country, though I heard they're dropping that one soon if not already, because last time I checked was last month.
Last year's winter Comiket required you to have both, but they dropped that in favor for contact information (name, address, and phone number usually).
But other than that, no such requirements anywhere.