>Most managers do not want to fire their reports, if they can help it. But a PIP is often the last breakpoint before they have to do the deed.
As someone said, it varies from company to company. Many managers treat it as a step to firing. And if you listen to employees who've been through it, many will have stories about how unfair it was - unfair in that others who had worse "infractions" were given a pass. To them, it was clear the boss just wanted them out of the team and was using some pretext (not the real reason) to get rid of them. Very often, that pretext is not maintaining appropriate work hours.
From Netlfix's former HR manager:
>One Netflix manager requested a PIP for a quality assurance engineer named Maria, who had been hired to help develop our streaming service. The technology was new, and it was evolving very quickly. Maria’s job was to find bugs. She was fast, intuitive, and hardworking. But in time we figured out how to automate the QA tests. Maria didn’t like automation and wasn’t particularly good at it. Her new boss (brought in to create a world-class automation tools team) told me he wanted to start a PIP with her.
>I replied, “Why bother? We know how this will play out. You’ll write up objectives and deliverables for her to achieve, which she can’t, because she lacks the skills. Every Wednesday you’ll take time away from your real work to discuss (and document) her shortcomings. You won’t sleep on Tuesday nights, because you’ll know it will be an awful meeting, and the same will be true for her. After a few weeks there will be tears. This will go on for three months. The entire team will know. And at the end you’ll fire her. None of this will make any sense to her, because for five years she’s been consistently rewarded for being great at her job—a job that basically doesn’t exist anymore. Tell me again how Netflix benefits?
https://hbr.org/2014/01/how-netflix-reinvented-hr