Consumerism is a social movement that seeks to balance the asymmetric re-lationship between buyers ( consumers) and sellers ( companies). Since the 1980 decade the movement has been evolving to discussions more centered around moral and political themes like ethical and sustainable consumption. This evolution brought changes to the relationship between companies and consumers . Despite the growing trend of companies assuming formal commitments to address social questions, this effort is not recognized in the consumerism literature. The present study aims to analyze, through the lens of the neo institutionalism theory, the organizational field composed by two consumerist organizations and one multinational company, its structure and relationships dynamics. The findings indicated that the same company had different motivations and distinct types of responses to the consumerist organizations pressures according to its identity influence and the strength of its intra organizational communities. Also, it was observed that the development stage of the cause and the funding of the consumerists institutions influence their line of action and therefore their results. The pre-sent study fills a gap in the consumerism literature as it adds the perspective of companies. Moreover, it proposes a new approach with the Neo Institutionalist theory and through the analysis of distinct causes as opposed to a generic analysis of the consumer defense cause.