This work studied the presence of women in the legal profession of police chief, a profession that is "traditionally" masculine. The DDM (Police Stations for Women) was evaluated to verify if the "market reserve" established by this agency has contributed to a process of "subordination" of these professionals front of their peers. The study found that, on the one hand, the inauguration of DDM's channeled more women to work in these agencies, on the other, contributed to an "imprisonment" of their career. This is because, for many delegates, working in a DDM is considered an "obstruction" for this career. The research was conducted in Sao Paulo, where we studied these Police Districts and Police Stations for Women (DDM's). The study was conducted from 2007 to 2009.