Introduction
Roberts (2003, p.89) argued that performance appraisal is a controversial management tool that provides answers to problems within the system design and administration of organizations. Majority of the organisations have adopted appraisal systems to enable it gauge employee performance in trying to boost morale, and reward them accordingly. However, despite the importance and popularity of the performance appraisal in organisations, its implementation and effectiveness have been controversial (Liu and Dong, 2012, pp. 150). In fact, some studies revealed that there are many performance appraisal systems that have completely failed to motivate employees to do a better job (Oh and Lewis, 2009, ...