Today knowledge is the company’s main resource. To be competitive, companies need qualified employees who are able to use their knowledge for solving problems. Especially in the field of product development it is essential that relevant knowledge is available. Knowledge Management is one important module of the concept of Lean Development. The Sulzer Mixpac AG has established Lean Development in its structure, while knowledge management has been introduced to the organization. This article provides background information. Sulzer Mixpac has followed the Toyota principle: “Before we build cars, we build people!”