In Japan prisoners are eligible for parole after serving one-third of their sentences or after serving 10 years of a life sentence; about two-fifths of prisoners in Japan are released on parole.

Does Japan have a parole system?

Administration. 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 sex workers). The ministry's Rehabilitation Bureau operates the probation and parole systems.

How does parole work in Japan?

The 'remission of execution of sentence' is available to parolees sentenced to life imprisonment. A life-sentence prisoner will serve at least 30 years in custody before being considered for parole. After release, they will be on probation supervision for the rest of their life.