The aim of this paper is to present the introduction of Lean methodology, ie 5S+1 tools in the production company Metal Obad d.o.o. Given that the competition in the market is increasing every day, it is necessary to improve production processes and reduce production costs. Lean is primarily a concept of life philosophy, and only then a set of different methods by which the company achieves its goal - success. The theoretical part of this paper deals with the concept of Lean methodology and 5S+1 methods of improvement whose main motive is better organization, cleanliness, tidiness and safety of workplaces in order to achieve a work environment that allows better productivity. With the help of this, an introduction to the practical part is defined. The practical part of the work took place in the production company "Metal Obad d.o.o", which shows the application of the methodology explained in the theoretical part and shows the improvements based on the implemented processes. In the final part, a conclusion was made based on the implemented methods and processes.