The article is devoted to the study of the essential features of the head of the public service in a state body as a subject of public service legal relations. It is found that depending on the nature of the powers that determine the role and degree of participation of public servants in the exercise of public power functions, there will be a different range of rights and responsibilities of managers, specialists, executors. Given the great diversity of public servants, the scope of their powers affects the content of the legal status of a public servant, but not the fact of his belonging to the public service. It is established that the head of the public service in a state body has: a) the general status of a citizen of Ukraine; b) sectoral status within the framework of official law – the status of a public servant; c) a special status within the framework of official law, which is mediated by the nature of the powers granted – the status of the head of the public service in a state body. The substantive features which characterize a public servant who has acquired a special legal status of the head of the public service in a state body are singled out: 1) he is assigned to public servants; 2) he holds the highest position of public service in a state body; 3) he is obliged to perform a special type of duties that are an element of authority: a) in matters of public service and b) organization of work of other employees in this body. Attention is paid to the fact that each head of the public service in a state body is an official authorized to perform organizational and administrative functions, but not every official is the head of the public service in a state body. A possible algorithm for finding a higher position in a state body is identified: a) if there are positions in a state body that fall into different categories, the highest position in a state body will be held by the public servant who replaces a category “A” or “B” (in the absence of positions classified in category “A”); b) if there are positions in a state body that are assigned to one category, the highest position will be held by the public servant whose position is assigned to the highest subcategory.