The concept of "coalition" has been prominent in the organizational literature for more than 25 years (March & Simon, 1958; Thompson & McEwen, 1958). However, the concept has been applied inconsistently and frequent! , has been a secondary subject of attention by those with primary interests in studying other organizational phenomena. Furthermore, despite the existence of research on coalitions in social psychology and political science, the organizational context-we contend-makes generalizations from the findings in these other fields tenuous. The focus of the present paper is on: (1) a review and critique of the use of the term coalition in the field of organizational behavior; and (2) an elaboration of the features of the organizational context that strongly affect conclusions regarding the origins, nature and impact of coalitions. (For a more complete version of the first section of this paper that reviews the historical usage of the concept, see Stevenson, Pearce & Porter, 1985.)