This has never made sense to me. In the US, you can fire someone because you don't like that they wore a green shirt! As long as it's not for one of those specific, enumerated forbidden reasons, companies have total freedom to hire and fire.
I was fired once, and there were no PIPs, no documentation, no warning, no nothing. Just "We aren't doing this work anymore and don't need you" and that was that.
I was fired once, and there were no PIPs, no documentation, no warning, no nothing. Just "We aren't doing this work anymore and don't need you" and that was that.