Lean is a management philosophy that has spread to almost all parts of the world, where companies aspire to perfect Lean management's unique techniques and tools that enable improvement by eliminating redundant events, and anything that does not represent value from a customer perspective is considered redundant. This maximizes impact and minimizes costs, while delivering the full value of products and services to the customer. The application of Lean is possible in all areas in which there are losses and opportunity for improvement. An important emphasis is on employees. Therefore, achieving full implementation of Lean in the company is only possible by involving all levels from managers to other employees and associates. While in traditional organizations most of the work in the organization is lost, Lean organizations focus on eliminating those losses. Successful implementation of Lean management results in reduced production cycles, waste, omission, disruption, increased safety at work, and many other positive effects. Organizations should pay special attention to researching areas where they can save resources and time, all in order to increase competitiveness and profitability. In Croatia, there are only a small number of companies that systematically use Lean tools. Considering that the most common starting point for the implementation of Lean management is the "5S" method, the paper describes the application of this method on the example of Elcon Geraetebau from Rijeka. It is a method that results a well-organized workplace (clean, tidy, secure and organized), bringing people and processes together. The “5S” method is often seen as a prerequisite for the future implementation of Lean management, contributing to company transparency.