The Omani legislator is keen to include legal articles dealing with the subject of adequate job performance reports in the field of public service law issued Royal Decree No.(120/2004) and its executive regulations issued by decision No.(9/2010) this study has shown the limits and scope of the application of the evaluation reports of adequate performance and the. Accoordingly, the study was divided into two semesters preceded by an introductory chapter dealing with the introductory chapter . What is the assessment of the adequacy of the job performance and the first chapter preparing the performance evaluation reports and their impact on the career prospects of public employee. The role of the reports of evaluating the adequacy of the job performance and the importance of these reports in the life of the public employment and the study concluded to the statement of the formal and objective aspects of the theoretical and practical aspects of the reports To assess the adequacy of the functional performance and the effectiveness of these reports and judicial applications on the other hand. The study also reached a number of conclusions and recommendations as outlined in the conclusion