The society materializes its protection measures, against those who commit crimes, by isolating them in penitentiaries. Penitentiaries are highly vitiated environments, maintaining the criminal subculture, through the kind of relationships that persons deprived of their liberty establish within the group. The social reintegration program for persons deprived of their liberty, through professional reintegration programs, includes details on a modular program prior to release to be administered by prison staff. It is important to mention that this program is part of a process of social integration of people released from detention, but the whole process is not limited to this program. A program started in the penitentiary cannot aim to solve all the problems faced by persons deprived of their liberty after release. The program should be seen as a very important first step in the process of preparation for release and post-criminal assistance, a step that helps the person deprived of liberty for the purpose of professional reintegration, to collaborate with the probation counselor and other community agencies to develop an adequate post-criminal assistance plan. The vision of the penitentiary service is that it must acquire the status of social partner that the community needs. Given that persons deprived of their liberty belong to the community, the detention institution thus provides an essential service to society. The focus of the research we have proposed is: Studying the process of social reintegration of persons deprived of liberty and analyzing strategies to ensure the socio-professional integration of persons released from detention in Romania. At the beginning of the study, we hypothesized that: the reintegration of persons deprived of their liberty depends on raising the level of professional training of detainees and raising awareness among detainees about its importance in the labor market. Social reintegration is the restructuring of the offender's character in such a way that he or she becomes active in society without committing crimes in the future. The assistance provided to detainees is materialized in the development of intervention programs focused on the criminogenic needs of criminals and in the support of the detainee in order to satisfy social needs (education, housing, employment, employment).