Knowledge integration is one of most critical factors for organizations competiveness, but also a critical factor because the constraints of knowledge nature. Sharing knowledge and effectively integrate it in organization practices and processes seems to be a very powerful strategy and at the same time a very difficult achievement. This research focuses on how knowledge is integrated within the work processes. The purpose is hence to describe and analyze how knowledge is integrated in a Portuguese organization and all the implicit constraints, supported in an intensive case study. A main result of the research is that knowledge integration became part of the strategy of competitiveness of the organization for the last decade and to implement it they have developed a culture of knowledge and mechanisms that facilitate the sharing and the integration of knowledge in day-by-day work practices.