As responsibilities change, they like to have an explicit understanding with their supervisor. Employees also appreciate knowing what managers do and what their coworkers do. Provide training for employees so that they can do well what they have been hired to do. Few people enjoy doing what they cannot do well. Mediocre performance because of lack of training and a supervisor's criticism for the mediocre performance frustrate even the most enthusiastic employee.
Training is an investment in people.
Show trust in employees by delegating authority and responsibility to them. The delegation helps satisfy employees' esteem needs. Catch people doing things right and say thank you. Performance appraisals that emphasize the positive help build the reputation of the employer. Focusing on the negative by catching people doing things wrong and then correcting them causes employees to fear or at least dread performance appraisals.