The Penal system of Japan (including prisons) is part of the criminal justice system of Japan. It is intended to resocialize, reform, and rehabilitate offenders. The penal system is operated by the Correction Bureau of the Ministry of Justice.
On confinement, prisoners are first classified according to gender, nationality, type of penalty, length of sentence, degree of criminality, and state of physical and mental health. They are then placed in special programs designed to treat their individual needs.
Vocational and formal education are emphasized, as is instruction in social values. Most convicts engage in labor, for which a small stipend is set aside for use on release. Under a system stressing incentives, prisoners are initially assigned to community cells, then earn better quarters and additional privileges based on their good behavior.
The Correctional Bureau of the Ministry of Justice administers the adult prison system as well as the juvenile correctional system and three women's guidance homes (to rehabilitate prostitutes). The ministry's Rehabilitation Bureau operates the probation and parole systems. Prison personnel are trained at an institute in Tokyo and in branch training institutes in each of the eight regional correctional headquarters under the Correctional Bureau. Professional probation officers study at the Legal Training and Research Institute of the Ministry.
In 1990 Japan's prison population stood at somewhat less than 47,000; nearly 7,000 were in short-term detention centers, and the remaining 40,000 were in prisons. Approximately 46 percent were repeat offenders. Japanese recidivism was attributed mainly to the discretionary powers of police, prosecutors, and courts and to the tendency to seek alternative sentences for first offenders. By 2001 The overall prison population rose to 61,242 or 48 prisoners per 100,000. By of the end of 2009, the prison population had yet again risen to 75,250, or 59 prisoners per 100,000. One reason for the rise is a large increase in the number of elderly being convicted of crimes, with loneliness being cited as a major factor.