This study deals with the employee fairness perceptions of their performance management system in Economic Plenning Unit, Prime Minister Department. The concept of justice, with particular reference to procedural, distributive and interactional justice, is used as a guide in assessing employee perceptions of fairness of the organisations’ performance management system. A quanlitative approach was used to gain an in depth understanding of employee perceptions of fairness based on their experiences of the organisation’s performance management system. Data was obtained through SPSS data analysis 210 employees who had been with the organization and participated in the performance management system. The overall findings show that there are positive fairness perceptions of the performance management system as assessed according to the three organization justice factors of procedural, distributive and interactional justice.