Administrative system should reflect the real needs of its users and be reduced to its simplest and logically most justified structure, while at the same time meeting its users’ requests in a legally valid and efficient manner. The optimal model of every administrative system should be based on the results of previously conducted analyses of processes and human resources, as well as on the need to ensure an adequate number of employees and competences essential for good functioning of the system. Importance of judicial review, as a way of controlling the administration, is multiple. Judicial review, as a means of guaranteeing legality, owes its importance not only to its repressive nature, which is best displayed when a sanction is imposed as a result of an actual violation of the legal order; but, also this particular form of control has a pronounced preventive function, as it affects the course of administrative proceedings in advance. Administrative dispute is the most prominent form of judicial review when it comes to legality of administrative acts, while an administrative act is an authoritative decision aimed at producing immediate legal effect as to the rights and obligations of natural and legal persons in a particular case of administrative action. Administrative dispute is a form of judicial control over the administration and, primarily, a form of control over the administrative act. Administrative dispute is initiated by filing a statement of claim. The statement of claim regarding the main matter and subsidiary claims is then decided upon by the court through a final judgement. The latter is passed and published on behalf of the Republic of Croatia.