Can integrated confl ict management systems (ICMSs) be fully and successfully integrated in unionized workplacesT he fi eld of workplace confl ict management systems design has evolved almost solely in the nonunion context. Th e initial ideas for Getting Disputes Resolved, Ury, Brett, and Goldberg's (1988) book that introduced the term dispute systems design into the confl ict resolution lexicon, came from research in the heavily unionized coal mining sector, but most of the subsequent work in the subfi eld of systems design has not engaged with unions or unionized workplaces (Bendersky 2007;Costantino and Merchant 1996;Katz and Flynn 2013;Rahim 2011). In 1996 Costantino and Merchant proposed the concept and term confl ict management systems (CMSs), launching a stream of innovation and implementation in the fi eld-all in the nonunion sector. Subsequently, Gosline et al. (2001) introduced the integrated confl ict management system (ICMS) model, which did not even discuss how the model would function in a unionized environment. Since then, the ICMS model has become the gold standard and most comprehensive design in the fi eld, but it too has been implemented primarily in nonunion settings (Lipsky 2014;Lipsky and Avgar 2010).