The official system can best be defined as a categorical apparatus that is mostly regulated by the provisions of official legislation and as such is a complete set of logically connected categories. It is also necessary to note that the official system has a certain structure and that for the quality functioning of the state it is necessary for that structure to be well defined. Within the civil service system, there are civil workers who can be defined as subjects whose regular occupation consists of conducting business within the scope of government bodies established by the Constitution, law or other regulation adopted on the basis of that law. The sectors whitin the administration of the civil service system of the Republic of Croatia are the sector for civil service relations, the sector for the centralized payroll system and the sector responsible for human resources. All the mentioned sectors consist of several services, and the administration for the civil service system is responsible for performing numerous tasks. Official relations are a very important element for the functioning of the official system, and they are characterized by the following elements: voluntariness, personal performance of verified work, billing, subordination, assumption of duties and acquisition of certain rights based on official relations and professionalism. Voluntariness is the main starter of employee relations. When comparing the civil service system of the Republic of Croatia and the civil service systems of the countries in the region, in this case Bosnia and Herzegovina and Republika Srpska, it can be concluded that the basic principles which relate to rules of conduct, relations with co-workers and citizens, and the basic rights of civil workers whitin all three official systems do not differ significantly, but there are bigger differences present for example, when it comes to job positions.