Performance appraisal (PA) is one of the important components in the rational and systemic process of human resource management. The information obtained through performance appraisal provides foundations for recruiting and selecting new hires, training and development of existing staff, and motivating and maintaining a quality work force by adequately and properly rewarding their performance. Without a reliable performance appraisal system, a human resource management system falls apart, resulting in the total waste of the valuable human assets a company has.

There are two primary purposes of performance appraisal: evaluative and developmental. The evaluative purpose is intended to inform people of their performance standing. The collected performance data are frequently used to reward high performance and to punish poor performance. The developmental purpose is intended to identify problems in employees performing the assigned task. The collected performance data are used to provide necessary skill training or professional...