Organizational knowledge represents an organized group of data and information created and maintained by individuals and business through regulations and procedures [1]. It is essentially related to human action and it is part of the company's intangible assets [2]. This continuous and complex interaction works as a reciprocal process based on a psychological contract full of reciprocal expectations which stipulate the terms of trade and engagement between people and organizations. On one hand, organizations offer rewards, while on the other hand, employee provides his contribution, conceptualized as partners willing to invest their resources as they reach their objectives and obtain mutual benefits. When tacit knowledge is shared, it allows the creation ideas that contribute to innovation, the increases of firm value and the development of sustainable competitive advantages among others advantages. This paper is based on a comprehensive literature review, by analyzing scientific papers, whose purpose is to examine the influence of relational psychological contract and affective commitment in the intentions of employee to share tacit knowledge, as factors for the transfer to be successful.