It's more than the workplace. Once you get vaccinated, it stays with you 24/7. A workplace requirement is something you only do while you are in the workplace.Even if you don't agree with masks, they are is an alternative to vaccination. Even the lawyers arguing against this regulation agree that the Federal government does have the right to regulate workplace health. This law is about workplace health, it is not about the general population though the lawyer arguing against stated that he believes the states do have the right to mandate vaccines for everyone which Includes illegal immigrants. Ask them why are they not doing that?