This paper addresses the issue of how knowledge workers, here two consultants who work with organi- zational change and development, use knowledge in their professional practice. The focus in this study has been on the use of knowledge developed by researchers, but used by consultants. Knowledge developed by researchers is often seen as hard to use in a practical and professional situation. For a practice oriented subject area such as in- formation systems that concerns itself with the develop- ment and implementation of different types of information systems, the need for practical and usable knowledge is evident. My study is a contribution to dee- pen the understanding about consultants and their use of research-based knowledge.