The article focuses on the formulation of an urgent comprehensive scientific thought on the anti-corruption value of the administrative and legal restriction of the closely affiliated persons’ collaboration in the justice system of Ukraine. It is a justified restriction of the citizens’ rights to access professional public service in the justice system, provided by national administrative legislation, to continue public service and to exercise a career in this system, by preventing the conclusion of a service contract, blocking the promotion of persons, if this predetermines about direct subordination to a closely affiliated person; termination of official legal relations with persons who are in a relationship of direct subordination to a closely affiliated person. It is noted that the general anti-corruption essence of the restriction under consideration is manifested in the fact that this restriction appears as a «personnel barrier» for increasing corruption risks in the justice system due to the implementation of personnel policy, as well as a “personnel instrument” for correcting situations when a violation of the corresponding restrictions takes place. Considering the concept and essence of limiting the collaboration of closely affiliated persons in the justice system, the author proves that the anti-corruption value of such a limitation is that it: while restricting the joint work of closely affiliated persons in the justice system, makes it impossible for nepotism as a separate manifestation of corruption to arise in this system; is a real barrier that reduces the dynamics of the spread of corruption and limits its scale (primarily, in the form of nepotism) in the system of public administration subjects in Ukraine in general and in the justice system in particular; contributes to increasing the authority of judges, professional public service in general and the level of respect and trust of society in the judiciary, the state, as well as reducing legal nihilism in society; maximizes positive incentives for lawful behavior of citizens in general and professional public servants in the justice system, in particular; is the actual result of a public demand for a decrease in the level of tolerance to corruption in the public administration system in general and in justice system, in particular. In the conclusions to the article, it is noted that non-compliance with the administrative and legal restrictions on the collaboration of closely affiliated persons in the justice system creates a situation in which the public service bodies in this system are filled with close persons, who may enter into a corruption conspiracy to use the common good and public interest in their own (personal) interests, which is unacceptable because it distorts the purpose of the existence of the state in general and the judicial power, in particular. Keywords: administrative and legal restrictions, anti-corruption value, corruption in the justice system, joint work of closely affiliated persons, justice system, personnel barrier, personnel tool.