The Trouble with Performance Reviews [the broken link was removed] by Jeffrey Pfeffer
The most basic problem is that performance appraisals often don’t accurately assess performance. More than two decades ago research done by professor David Schoorman showed that whether or not the supervisor had hired or inherited her employees was a better predictor of evaluation results than actual job performance.
Possibly the biggest issue, however, is that performance appraisals focus managers’ attention on precisely the wrong thing: individual people. As W. Edwards Deming, the father of the quality movement, taught a long time ago, company performance often results more from variations in systems than from the individuals doing the work. One of the reasons Toyota Motor has been so successful for decades—even as leaders have come and gone and the automobile market has changed—is that the fundamentals of the Toyota management system, which emphasizes quality, continuous improvement, and standardized tasks, provide the advantage. By focusing on the presumed deficiencies or strengths of people, individual performance reviews divert attention from the important task of eliminating the systemic causes, such as inferior technology, behind poor performance.
Another good article pointing out the harm of annual performance reviews. As I have said many times managers need to do better. See chapter 9 of the Leader’s Handbook and previous posts: Don’t Use Performance Appraisals – – Deming and Performance Appraisal – Find the Root Cause Instead of the Person to Blame – Performance Without Appraisal