The purpose of this article is to analyze the feasibility, in Brazil, of re-socializing prisoners through work, objecting to their return to society, as well as analyze the importance of the education actions on prisons that should prepare them for professional life. Furthermore, this article exposes the matter of the productive activities to generate financial support as a means for the inmate to contribute to its own family or, even more, somehow, reimburse the State for the prison costs. Besides that, the prison models adopted worldwide, and their historical evolution, as well as the model used in Brazil, will be presented. Lastly, data about the work of prisoners in Brazilian prisons will be shown, exposing the positives and negatives of the reality of this country; in the same way, this article will analyze projects by private companies and public institutions that aim to reinsert inmates and ex-inmates into society.