The debate about the meaning of Organizational Commitment and the dimensions of the construct has been raising for the last decades. The individual feels bound to the organization according to an affective feeling, detached like an identification or by a favourable valuation that does not imply the adoption of its system of values. The meaning could be also understood like an obligation feeling, that can be external, and that is feels in debt with the organization, or an internal motor based on the internal coherence between attitude and behaviour, used by Salancik. And the last dimension would be related to the fear of losing the investments done in the organization or to a lack of alternatives. All the dimensions imply intention of permanence in the organization but we have divided as an proactive attitude that would be the desire or as passive permanence like the non intention of leaving. 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