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An intervention research in the Champagne industry offers key lessons about the operation of a cooperative Union. The question that was in fact raised is the following: “how do member cooperatives perceive the governance of their Union in order to preserve the cooperative model?” To answer this question, the methodology implemented is of a mixed nature with a questionnaire sent in August 2016 to all the cooperatives involved in study and 22 interviews conducted with cooperative presidents. The results show that the member cooperatives are generally satisfied with the governance of the Union. However, the social contract (Sadi and Moulin, 2014) can be weakened because of the social distancing (Barraud-Didier et al., 2012), hence the need to adjust the organization accordingly (Filippi, 2005).