The article analyzes and clarifies that the systematization of labor legislation, like any other social activity, is characterized by the presence of its own object, the study of which will allow a more meaningful understanding of its essence, purpose and mechanism of operation. The article states that the object of knowledge can be all reality, but only to the extent that it has entered the scope of the subject. The concepts of «object» and «objective reality» are related, but not identical in meaning. The object is not the whole objective reality, but only that part of it which has already entered the practice of mankind and constitutes the circle of its cognitive interests. In the field of law, the object is understood as the purpose of the regulatory influence of law, activities and interests of legal entities. Analyzing the essence of the object of legal relations, it is determined that the issues related to the object of legal regulation are the most complex in the theory of legal relations. An object is a part of the objective reality with which the subject interacts. This understanding of the object can be applied to the field of law. The article analyzes the concept of «object» in both philosophical and legal sense, and concludes that the object of systematization of labor law - is what it is aimed at, to which the measures of this systematization. From the very concept of «systematization of labor law» it follows that the object of study is the specified area of national law. However, this approach to understanding the object of systematization is quite superficial, because, first, the concept of «legislation» has both broad and narrow interpretation; secondly, legislation is a form of law, so, thinking about the systematization of labor legislation, we can talk about both its external and internal regulation. In addition, revealing the essence and purpose of systematization, along with its object also distinguishes the subject. It is determined that the object of systematization of labor legislation is a set of regulations governing labor and closely related legal relations, is the object of systematization is a certain part of objective law and its sources, regardless of whether they are purely external streamlining or revision of the content of these sources; the law acts as a certain objectively existing fact, which is influenced by the subjects of systematization; in turn, the subject of systematization is the form and / or normative-legal content of certain specific normative-legal acts, in respect of which the corresponding forms and methods of systematization are applied.