Health care professionals' enggements in health care development processes have considerable impact on the outcomes of such processes. Particulary doctors' willingness to become involved is central to success from organizational developement projects in health care. The aim is to gain deeper understanding of how health care professionals view their motives and engagement in organizational healthcare developments, an it's importance for collaboration and participation in implementation of lean processes. A conceptual model of physicians' engagement has been described from qualitative interviews. Thereafter an instrument has been developed to be used to assess preconditions for implementation of organizational developments.