In cases like this they'd typically they'd just fire you and pay the salary through the minimum notice period without requiring nor allowing you to show up. I see no reason to think that's not the case here.
Yeah there are laws : https://www.dol.gov/general/topic/termination/plantclosings. Probably state laws as well. These require notice of severance or post payment and protect against discrimination. Twitter can try to claim that they’re all being fired for cause, but that’ll just end up paying a whole lot of lawyers.
I’m glad Australia has decent laws to protect workers. It’ll be interesting to see if Australian Twitter staff who are locked out of their accounts have been laid off and what happens next.
https://www.fairwork.gov.au/tools-and-resources/fact-sheets/...