Reviews require that people's jobs are confined to a given box. Many people like to do things outside of that box, or hate being so constrained. Companies als

Reviews require that people's jobs are confined to a given box. Many people like to do things outside of that box, or hate being so constrained. Companies also struggle to quantify the value of some of the things people do. For example - Employee 1: Sales rep, hits quota, shows up late, leaves early - Employee 2: Sales rep, behind on quota, but everyone in her pod is crushing because she's spending extra reps helping them be better at their job. It's likely that employee #2 is in the wrong role. But if you're a mega-corp manager, all you see is that she's behind on quota, and her annual review reflects that. Let's put her on a pip and find some more people like Employee 1. It could be that Employee #2 isn't motivated by more money. Telling her "Do more sales or you're fired" could end up being pretty bad for you. You may end up getting what you want(employee 2 is gone) but not like what you get(decreased productivity for your other team members.