Despite the importance that the analysis of the processes of establishment can provide for the understanding of organizational dynamics, the variables inherent in such processes remain unclear. From this perspective, the work reported on in this paper studies the principal enabling conditions which give rise to the creation of organizational coalitions. The paper is organized in two sections. The first offers an analysis of three different theories: those of Organizational, Game and Social Identity. The second is concerned with an attempt to integrate these three different approaches into a coherent conceptual model of analysis which encompasses both economic and social variables. The aim of this work is to overcome the limitations associated with considering each of the three theories individually. By perceiving the organization as a collective of individuals, it is possible to identify the principal elements which can be considered as those general determinants able to influence the processes of establishing coalitions. These determinants are: the activation of privileged relationship networks within the organization; the manifestation and consolidation of relevant communication networks; the impact of leadership on the various groups which make up the organization.