This chapter is the first of three addressing how mobbing develops and its causes. In this chapter, four different theoretical models arising from multiple disciplines are analyzed for their contributions to the understanding of how mobbing and organizational abusiveness develop. Discussed are the conflict model, drawing from sociology; the cybernetic model, drawing from systems theory; the communications flow model, drawing from communications theory; and the antecedents, behavior, consequences (A-B-C) model, drawing from psychology. Additionally, the organizational dynamics of strategy, structure, culture, leadership, members, and the external environment and their interrelatedness are proposed as a means for obtaining a cross-sectional view of an organization to assess its mobbing-proneness.