Acknowledgment and evaluation of performance is the quintessential HR operation. All the prior operations-recruitment, selection, hiring, assign­ ment, training-come together to be appraised for their results and effi­ cacy. For this to be effective, both worker and manager need to be open to one another and to be in relationship-trusting of one another and mutu­ ally concerned for the work and the organization. Performance appraisal is less a time for making judgments and more a time for workers and man­ agers to be a source of information to each other about the specifics of per­ formance. Ideally, it is also a time to mutually set the conditions workers need to achieve flow.