The relevance of the research topic is determined, on the one hand, by the need for the enterprise to maintain the proper level of reliability in order to respond to changes in the environment in a timely manner, always be ready to meet its obligations, in all situations to satisfy demand and secure a strong position in the market, on the other hand, the desire organizations to reduce costs and continuously improve the efficiency of their activities, which is ensured, inter alia, by the use of lean-technologies. The aim of the master's thesis is to develop an economic mechanism to ensure the reliability of the enterprise when introducing the concept of lean manufacturing. The paper considers the concept of “reliability” in relation to organizations, analyzes the experience of implementing lean manufacturing, and also puts forward a hypothesis about the relationship of these phenomena, which is confirmed using a structured-logical model of the relationship between the consequences of the use of lean-technologies and the reliability of the enterprise, and empirically. As a theoretical and methodological base, the works of the founders and subsequent researchers of the concept of lean manufacturing, Russian and foreign authors, who studied the problem of ensuring the reliability of systems of various nature, including economic ones, were used. The empirical basis for the work was our own empirical research, the results of departmental research, as well as the reporting of the enterprise where the developed methods were tested. Based on the results of the study, the author’s definition of the concept of “reliability of the enterprise’s functioning” is formulated, a classification of factors and aspects of the manifestation of the property under consideration is developed, a methodology for assessing the reliability of the functioning of the enterprise is developed, the basis of which is a system of indicators formed in accordance with the author’s classification of factors and aspects of the manifestation of reliability, and elements are also developed the economic mechanism to achieve a compromise between the consequences of introducing the concept of lean manufacturing and the reliability of the enterprise, which will create the conditions for the effective use of the tools of the concept and ensuring the reliability of the enterprise in the conditions of "lean manufacturing".