Regarding the optimisation of capacity utilisation the increasing product diversity has been an unsolved problem in job lot production for a long time. State of the art for solving such problems is the concept Heijunka, which means “levelled production”. The application of group technology offers the possibility to utilise this concept with regard to a low volume and high mixed production. In this context the characteristics of job lot production are investigated. Referring to these characteristics the concept Heijunka used in mass and serial production is adapted. The approach was applied in collaboration with Robert Bosch GmbH.