Lean Management is considered as the most effective methodology for substantial productivity improvement in any kind of
organization. It is becoming more and more popular among companies and public institutions. The aim of this study is to design a
tool for self-assessment of Lean Management maturity by an organization. The study is based on theoretical deliberations. It
considers the scientific literature in the area of Lean Management. As well as this, it draws significantly on practical cases of
Lean implementation, and also on the author’s experience. The proposed assessment approach is original in being focused on the
organizational culture sphere. Organizational culture shows if Leanis truly implemented in an organization. The tool can help
managers in better recognition of the current state of Lean transformation. Thanks for this, Lean transformation in organizations
could be faster and more effective.