This dissertation is a result of research of the increasing of hiring temporary charater of social workers of Brazilian Air Force during the 2000s, against of the transformation in the world of the work in Brazil, engineered of the logic of the capital in the monopolist stage, considering the new functions assumed by Brazilian State and it s process of conter-reform iniciated in the 1980s and 1990s. It s being deepened in the two decades ahead. So, the empirical clipping of the research object, as well as the theoretical framework, was delimited from our professional experience, when we observe an expressive hiring shows elements of precariousness of work in a segment of workers with especialized training. The development of the reserch, sought characterize the profile of the temporary military social workers that works in GAP and nb sp, identifying the level of professional staff and pointing the way of enlargement of the type of hiring in temporary charater inserts in forms of precarious work in Brazil. It was observed that the effective of social work of (GAP) actually is majority compound for temporary professionals and the main expression of precariousness in work bond, generator of constant instability and uncertainties. In the other side stands out of positive factors the potential development of work, remuneration, work conditions and the possibility of professional training inside the institute in determinated period of work that is realized no later than eight years of hiring.