Samenvatting

Professionals' willingness to change is a necessity for successful implementation of changes in the organisation.
This study focused on the influence of a transformational leadership style on professionals' willingness to change. This
multiple case study was performed in three project management organisations that had recently implemented a new business
information system. The research data were obtained through both qualitative and quantitative data collection. The qualitative
investigation revealed that through leading by good example a manager has a positive influence on their employees'
willingness to change. However, the quantitative investigation showed that there is no relationship between transformational
leadership and the motivational factors of willingness to change. Finally, the study showed that the most important factors of
employees' willingness to change are timing, involvement, emotions, necessity, and added value