Four rooms of change

We are the best when it comes to change

​Dr. Claes Janssen is the creator of the renowned leadership and change theory, the Four Rooms of Change and is currently a member of the Board of Directors for Janssen’s Model and its Advisory Board.
As of 1 February 2021, the copyright for the theory, the model and its tools operate under the new trademark Janssen’s Model. We are continuously developing the concept in order to meet the challenges and needs of today and the future.
Janssen’s Model trains and certifies leaders who work professionally with all types of development and change initiatives. This can involve everything from large-scale change projects or creating the right culture and structure in organisations using a common language, to helping individuals to both develop and change. The theory, the model and its tools create the platform for sustainable organisations staffed with thriving individuals.
Our vision:
Janssen’s Model is the preferred choice for professional change and development initiatives, both nationwide and worldwide.