In the work environment, light which improves the quality of life and raises productivity is gaining increasing importance. This system, consisting of a control unit and luminaires, simulates the colour temperature and light intensity of changes in daylight in order to support people’s circadian rhythm. A neutral light colour is more suitable for the morning while warm white light is more apt for the evening. The system is easy to install, implement and operate. Moreover, it enables the selection of five different light scenarios for individual work situations.