I'm trying to get my head around all this. May I ask, where you are is it totally up to each individual to do whatever they choose in these situations? I'm not talking about people who flout regulations; those people are everywhere unfortunately. What I'm asking is whether or not this situation is subject to any local/state/federal rules?
Here, if a person is diagnosed with Covid their close contacts must be reported to the provincial health authority. Those people must report for mandatory testing. Then, even with a negative test result, they are in full quarantine for 14 days from the date of their exposure to a positive case. During this time it is illegal (and subject to fines starting at $1,000) for them to leave their homes for any reason and there would be hell to pay for any business that knowingly allowed such a person onto their premises to work. Again, of course there are those who lie and dodge the restrictions but at least the framework is in place and applies to every single citizen - no guess work about what is OK or not OK to do.