Lean is not a program-based concept. This makes understanding lean and establishing nice step-by-step guidelines difficult for many professionals. In this simplest form, lean is about removing waste or non-added value effort in a company. Removing or reducing this waste is a non-ending journey. By continually focusing on waste reduction, a company can react better o its customer’s needs, moreover it can improve performance. To understand the secrets of successful Japanese management, one must learn its tools and how such tools intertwined. Kaizen is one of these tools and people always confuse between lean and kaizen.