Yeah for the most part in the US there's very little legal protections in the code that state authorities can use to vindicate an employee. I think the only protections are things like age, sexual, racial discrimination. The PIP itself is designed to gather evidence that the company has a cause to rebut any claim of illegal discrimination. But if you don't start out with one of those claims, it's moot to disprove the cause.
I could be wrong - some more progressive states may have more protections than this. And certainly folks who are employed under collective bargaining agreements have more protections. That wouldn't apply at Amazon, though.
I could be wrong - some more progressive states may have more protections than this. And certainly folks who are employed under collective bargaining agreements have more protections. That wouldn't apply at Amazon, though.