This study is intended to assess the Practice and challenges of Employee PerformancernEvaluation system in Commercial Bank of Ethiopia (head office). On the source of data collectedrnthrough questionnaires and interview; the researcher has tried to address some of the realrnproblems of performance evaluation practice based on the opinion of the respondents andrninterview of PMS Manager in this organization. Selected Questionnaire was distributed to 358rnemployees of the bank working in head office. The findings of the research indicated thatrnemployee performance evaluation system has numerous benefits. Among them; it creates rolernclarity among employees, it enables to differentiate good and poor performers, and it creates arnconstructive competition among staffs. The system has also helped to motivate employees andrnencourage development through creating communications between the employees and theirrnmanagers. It also improves both individual and the bank’s overall performance. However, thernresearcher has found that there were challenges; lack of clarity in evaluations criteria, bias andrnfavoritism in performance evaluation process, no appropriate documentation for performancernappraisal, time also affect and employees’ negative attitude towards performance evaluation.rnManagers are also not accountable or responsible for their wrong feedback. On the basis of thernfindings, the researcher recommended that, the bank has to take remedial actions in order tornminimize evaluator bias and favoritism, feedback is given to appropriate time to the employee,rnappropriate data entering to oracle performance management system, manager keeping file orrndocument properly every time.