I had a job I referred my spouse to. The team she was in had some reservations, but nothing that couldn't be addressed, essentially a bit of temperament by cult

I had a job I referred my spouse to. The team she was in had some reservations, but nothing that couldn't be addressed, essentially a bit of temperament by culture shock young talented engineers tend to have on their first or second job. But the HR person assigned took the entire next year off, so she did not get any feedback except from her boss, who said everything was fine. Another feedback round got delayed for the next 3 months because someone on the team was sick, and eventually her delayed "team feedback round" appointment changed to one with HR, in which they fired her "just in case it was still a problem". That was the only time I've seen someone completely locked out - in Germany. She couldn't even complete the normal offboarding, because her building access was revoked, and the company didn't have an alternative process, so I had to bring it in, where people would agree with me that it was a process failure, and that they were very sorry, but not sorry enough to tell it to my spouse's face. That work relationship didn't last long after.