Nowadays many companies are aware of the importance of employee creativity. Suggestion systems are among the instruments for channelling creativity. However, companies vary strongly in the success with which they use suggestion systems. This article aims to clarify the organisational conditions for the successful use of suggestion systems. The CreativityTransformation Model encompasses the main factors that influence the functioning of suggestion systems. The model is tested within specific divisions of three companies that can be considered best practices in the use of suggestion systems. By applying the model, companies will be able to transfer employee creativity optimally into practicable ideas.