The Evolution of Performance Reviews in the Workplace. By the 1960s, around 90% of U.S. employers had implemented formal performance review systems. These reviews were not just about evaluating results; they became a primary means for managers to provide feedback directly to employees about their individual contributions, strengths, and areas for improvement. The process was designed to be personal – feedback was delivered face-to-face, often with attention to the employee’s feelings and professional development. This approach reflects the American tendency to connect feedback on work with the person, making it both a professional and personal matter.