What constellations, problems, and developments can restrict or threaten professionalism in social work? Under this question, the contributions of this volume address an aspect of professional research that has rarely been focused on so far. Examples are presented from the broad field of action, illustrating problematic and ultimately disruptive effects on professional practice. Threats and restrictions are depicted and analyzed in various ways in areas such as school social work, family work, adult psychiatry, and youth welfare.