To ensure that performance appraisal information is relevant, reliable, and valid for needs assessment, the following principles should apply:
1. The appraisal system should be relevant to the job and acceptable to both parties.
2. The manager who does the appraisal must have regular contact with the employee to ensure that the manager has access to performance-relevant information.
3. The appraisal should be for developmental purposes only.
4. The employee should understand the benefits (in the form of development and training) he or she will derive from the appraisal.