If you're put on a PIP, and you want to leave, you can use that as leverage to get some severance. Call it a resignation bonus. Getting a month or three of pay is money in your pocket, plus time to line up something better. An imperfect solution to an imperfect situation. Managing steps to PIP-can (methodically fire) a worker is taxing for everyone, and liability exposure. It may make financial sense for the company to cut its losses, paying a small certain liability to prevent a larger one.