The purpose of this paper is to contribute to the literature on organizational social capital and organizational commitment in collaborative networks context. Firstly, we identified the most important elements that compound these two concepts. In order to do that, we surveyed 193 employees of 74 companies' members of a food network - the Brazilian Wine Industry Cluster. Finally, we sought to better understand the relationship between commitment and social capital. The results show that affective and normative organizational commitments enchance social capital development, specially in relational and cognitive dimensions. These findings revealed that employeed may execute some tasks as a way of reciprocity to the support and trust - as well as, the other social capital elements - that have been places on them. In addition to contributing to the literature, we hope to provide an improved understanding of the determinants of organizational social capital in collaborative network context.