Benefits Using performance calibration, managers can discuss how to apply similar standards for all employees and help eliminate any potential manager bias. For example, prior to using performance review calibrations, all employees working for one manager may receive “outstanding” ratings while employees working for another manager may receive a wide-variety of ratings—anything from “outstanding” to “meets expectations” to “below expectations” for the same job. The reviews between the two teams would need to be calibrated to take into account the different reviewing styles and get a better idea of who is really doing well and who is not. After implementing calibrations, these managers will hold each other accountable for their ratings and extremely hard and extremely easy reviewers will be brought into line with the rest of their peers for more honest and in-depth performance reviews.