They can't legally mandate an exit interview, but they sure can pay you for one.

Nothing happens, it’s optional. However if you want to be able to be rehired it doesn’t hurt to do it. It doesn’t take long and you don’t really have to say anything.

Possibly nothing, possibly you'd get blacklisted and they'd share that with other companies in ways in which you'd never know or have any recourse https://fortune.com/2025/03/27/meta-block-list-hiring-employ...

https://www.businessinsider.com/how-block-lists-affect-your-...

https://medium.com/@ossiana.tepfenhart/the-no-hire-list-is-r...

https://www.theguardian.com/technology/2018/mar/16/silicon-v...