Being fired: Happens quickly, they either give you a reason or tell you "your position has been eliminated." Sucks, but rips the Band Aid off and done is done.

PIP: I've seen this happen to good and bad employees. Bad employees - it just drags out the process and provides a lot of friction and anguish, for the manager and maybe the employee. (Depends on whether they are actually even aware they're a bad fit or not, and whether they're well-intentioned or not.)

Good employees? It's literally gaslighting people. One day they're pulled aside and told they're not performing well enough and given a PIP. The PIP usually isn't designed to help them get performance up - it's creating a paper trail to manage them out.

Suddenly (as described in the parent article) they're being hit with complaints they've never heard before. Maybe there's substance, maybe not. It's a major blow to self-esteem and it's a dragged out process. They're not even given the satisfaction of a quick firing where they can be angry and done. It's a long suffering.

And to make the managers do this stuff - it's awful. Having to lay somebody off when a company RIFs people sucks. Having to fire people usually sucks unless they've really earned it. But telling a manager they have to PIP a percentage of their team arbitrarily and participate in this gaslighting process is simply evil.

He had a disagreement with his manager (let's leave it at that, heh), and over the next week, his arrangement to work from a different office (the rest of his team were based in this office too, just his department's office was technically somewhere else) was removed, his flex was removed, he was taken off all projects, and told that using his computer for non-work purposes was a disciplinary offence.

He had a 90 minute each way commute, was required to be clocked in between 9:30 and 4:30 every day (not 9:31, 9:30), required to work 37.5 hours, requests for using TOIL due to commute or other issues were immediately denied, no work to do, and not being allowed to use the computer in his office. The resolution was he found someone in a different department in the city we lived in that had the exact same thing happen to them, and they negotiated a swap with each other and things got better again.

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Point being, these processes are a combination of ass-covering, parallel construction, and outright abuse. Nobody deserves to be treated like he was (or like people are being treated in these PIP programs), it would be more humane for everyone if we did something different.

Firing you immediately for bullshit reasons is something you can potentially take to court, and also make a solid case for unemployment payments due to unfair termination.

If they put you on a PIP, and then claim that you're failing to meet it, even if they're lying through their teeth, that makes it much harder to prove that their actions were unfair or illegal. Suddenly it's no longer a "person said, faceless company said;" it's "person said, faceless company had months of documented (if falsified) evidence to back up their position". Unless you are savvy enough to start documenting everything, which is a) hard to know you need to do, b) hard to know how to do effectively, and c) kind of exhausting even if you can get it right.

To a large extent, the PIP process is there to cover Amazon's ass and make sure that your firing sticks.

And all that is if you don't just get frustrated and fed up with being constantly told you're failing to meet expectations that either you are, in fact, meeting, or no actual human could ever meet.