It's been mentioned in meetings and announcements. Dates and such vary depending on the agency/department. Absolutely no mention of exceptions for medical or religious reasons.
The interesting thing to watch is the folks eligible for retirement that haven't drank the Flavor-Aide. Most of the Boomers have gotten the shot, but there's enough left that may cause issues.
Also the government employee unions, the USPS in particular. Can't kill or cripple the serfs that help you fortify the election with all the mail-in ballot fraud.
As for contractors, that's another wrinkle, depends on the company.
They are doing evil until they can collect their pension.