The countries have recognized the great impact of the public office on the regular operation of Public Utilities. In order to make this regime is successful in achieving its desired goals which would lead to the advantage of the public and the public interest, the legislator is required to balance between protecting the right to hold public office and the public Interest. Based on aforementioned, the administration is obliged to respect a number of general principles in all its commitments and actions. On top of that comes the principle of justice, since it is considered the gauge of organizing and the basis of laws. Therefore, the legislator is indebted to adhere to the established controls and rules in regulating the procedures and conditions of holding public office. Otherwise, the legislation is deemed to be repealed because it will be unconstitutional. The importance of this study comes from its focus on a high human value principle, the scarcity of previous studies dealing with this type of principles in the Sultanate of Oman , and the absence of a comprehensive and profound analysis of the Omani civil service law texts, as the general legislation of the public job, in addition to the relevant texts in this regard. This study provides suggestions to the Omani legislator to complete the justice system in the field of Public Service in a manner that responds to the directions of the constitutional legislator. This will be achieved ‌طthrough analyzing the legal rules governing public service in the Sultanate of Oman, and determining its adequacy in achieving the objectives of the constitutional enshrinement of the principle of justice. The methodology of this study adopted the descriptive, analytical and comparative approach, which is based on the analysis of legal texts and the opinions of jurists with a set of comparisons between the legislative texts regulating and organizing public jobs in the Omani employment laws and regulations. And, the comparative law to the extent that it helps to highlight the notion of functional justice, in order to compare them to identify the areas of agreement or disagreement.