The production plant is the backbone of the company. Given the extremely important role of any company, in this paper I dedicate my special attention to the most sensitive part of production - production management and how to reduce loss - the waste of production. The research methods used in this final paper are descriptive method, inductive method and the method of analysis and compilation as the basic way of writing. The basic literature and the guiding thread of this paper is the manual of the course Program Task, Technology of Development Process, B. Godrić. The introduction part is based mostly on the theory of production, its history and types of production. Immediately afterwards, we move on to the well-known LEAN production method as well as its types and principles, and the tools used in the LEAN method. Much of the work's theory covers the category of inventories and their planning and use. In conclusion, we focus the work on the practical part. In other words on the case study of reducing scrap and increasing the quality of production in the company Bomark d.o.o. The practical part covers the general description of the problem, the problem-solving structure, together with the methods and measurements used in the practical task, and finally the analysis of the offered solutions and their implementation in the existing business.