This paper explores an empirical puzzle, namely, how inter-organizational relationships can be sustained between organizations that draw upon distinctive—and potentially conflicting—institutional logics under conditions of power asymmetry. This research analyses cases of these relationships and suggests some key conditions underlying them. Examining relationships between ‘Fair Trade’ organizations and corporate retailers, a series of contingent factors behind the dynamic persistence of such relationships are proposed, namely: the presence of pre-existing ‘hybrid logics’; the use of boundary-spanning discourses; joint tolerance of conflict; and (...) co-creation of common rules. These four elements are supported by a fifth mediating factor, i.e. the presence and use of a Fair Trade certification system in the collaboration. The latter appears as a central vehicle facilitating cross-logic relationships—it can be seen as a ‘boundary object’ embodying a series of narratives and discourses that are open to multiple interpretations corresponding to the dominant institutional logics of each partner organization. (shrink)