Torsten M. Kühlmann and Ramona Heinz developed this guideline in reference to a European project designed to analyze the overall situation of skilled immigrants. They show that the management of a workforce which is comprised of people from diverse cultural backgrounds is a challenge for small and medium-sized companies. In particular, the challenge is not only to find but also to integrate and retain immigrant workers and to use their potential to a full extent. This guideline has been developed in order to meet these challenges. It has a special focus on small to medium-sized organizations and sets out to give an introduction to the topic of “managing cultural diversity” and “integrating highly skilled immigrants.”