Japanese Prisons: How the Punishment System Works
Japanese prisons are not one institution but three different ones: 刑務所 for convicted prisoners, 拘置所 for those awaiting trial, and 少年刑務所 for convicted juveniles, all under the Ministry of Justice. At the end of 2024, the country's 73 institutions held 34,268 people against a capacity of 63,923 places — about 54 percent occupancy. Since June 1, 2025, the punishment has been unified as 拘禁刑, and labor is no longer a mandatory part of it.
Let's break down how 刑務所 differs from the detention center 拘置所 and the juvenile prison 少年刑務所, and why a person is held in different buildings before and after sentencing. We'll look at what the 2025 reform changed by merging two types of punishment into 拘禁刑, and what prison labor now means. We'll examine why Japan's prisons are half empty and why their population is aging faster than it is shrinking. Along the way, we'll check the character 刑, with which the word for "prison" begins.
Three institutions of one ministry: 刑務所, 拘置所, 少年刑務所
All places of detention in Japan are under the Ministry of Justice, but this is not one institution but three different types. 刑務所 (keimusho) holds convicted prisoners whose sentence has already taken effect. 拘置所 (kōchisho) is for those awaiting trial (未決拘禁者) or already sentenced to death and awaiting execution. 少年刑務所 (shōnen keimusho) is a separate institution for convicted male juveniles: they are kept apart from adults to prevent bad influence and to provide an enhanced educational program. There is no separate institution for convicted female juveniles — they are held in a regular women's prison together with adults.
Why a pretrial detainee and a convicted prisoner are held in different buildings
| Institution | Japanese name | Who is held |
|---|---|---|
| Prison | 刑務所 (keimusho) | Convicted prisoners under a final sentence |
| Detention center | 拘置所 (kōchisho) | Pretrial detainees and those sentenced to death |
| Juvenile prison | 少年刑務所 (shōnen keimusho) | Convicted male juveniles |
Kokinkei instead of two types of punishment: the 2025 reform
Until June 1, 2025, imprisonment was divided into two types: 懲役 (chōeki) with mandatory labor and 禁錮 (kinko) without it. The law merging them into a single punishment 拘禁刑 (kōkinkei) was passed by the House of Councillors on June 13, 2022, and came into force on June 1, 2025. Labor is no longer part of the sentence as a mandatory component — it remains, but now as part of rehabilitation, not as a condition of punishment.
Why mandatory labor was abandoned
The point of the reform is not to abolish labor but to redistribute time. The hours that used to go to mandatory labor can now be spent on education and individual work with prisoners. This is especially important for two groups: the elderly, who are becoming more numerous in prisons, and the young, who need a rehabilitation program, not just a work shift.
- 刑務作業 (prison labor) has not gone away — part of it still goes to maintaining the institution itself: the kitchen and laundry (経理作業).
- Another part is production work (生産作業): commissioned by the Kōsei Kōkai foundation, prisoners make shoes and furniture that are then sold at Kyapikku Ten exhibitions.
- The difference is that this is now not a mandatory part of the sentence but one of the tools for preparing for release — along with study and vocational training.
刑務所 in parts: punishment, duty, and place
刑 — значение: punishment, sentence, penalty — онъёми: ケイ — 6 штрих(ов). 刑 — "punishment": this character begins the word 刑務所, "prison," and all the vocabulary around the execution of sentences in Japan.
Why "place of punishment service" is not an image but an official phrase
刑務所 is read keimusho and is made up of three characters: 刑 — "punishment," 務 — "duty, service," 所 — "place." Literally it comes out as "place of punishment service" — that is what officials called the institution back in the Meiji era, when modern Japanese legal vocabulary was taking shape, and the word has not changed since.
| Japanese | Reading | Translation |
|---|---|---|
| 刑務所 | keimusho · keimusho | Prison |
| 受刑者 | jukeisha · jukeisha | Prisoner serving a sentence |
| 拘置所 | kōchisho · kōchisho | Detention center |
| 刑務作業 | keimu sagyō · keimu sagyō | Prison labor inside the institution |
| 出所 | shussho · shussho | Release, leaving prison |
Write 刑 along the guides — the character for "punishment," with which the word 刑務所, "prison," begins.
73 institutions for the whole country — and they are half empty
At the end of 2024, Japan had 73 prison institutions in 43 prefectures, holding 34,268 people against a total capacity of 63,923 places — about 54 percent occupancy. The number of prisoners has been declining for years, but the composition inside prisons is aging faster than the total number is shrinking: the share of elderly prisoners is growing year by year.
Why there are more and more elderly among the convicted
The elderly are most often convicted of theft, usually petty shoplifting: they account for the majority of cases involving people over 65, and among women of that age the share is even higher. Therefore, among those convicted of theft, the elderly are noticeably more numerous than among convicted people in general, and repeat sentences for the elderly are the main story of recent years in Japanese prison statistics.
The death penalty is retained in Japan and carried out by hanging, and the Minister of Justice signs the order for each sentence individually. Article 475 of the Code of Criminal Procedure allows six months for this, but the court has recognized the deadline as advisory: in 2014–2023, an average of about nine years passed from the finalization of a sentence to its execution.
FAQ
- How are Japanese prisons organized and who runs them?
- Japan's prison institutions are subordinate to the Ministry of Justice and are divided into three types: 刑務所 — for convicted prisoners serving sentences, 拘置所 — for those awaiting trial or execution, and 少年刑務所 — for convicted male juveniles. At the end of 2024, there were 73 such institutions in 43 prefectures.
- How many prisoners are in Japanese prisons?
- At the end of 2024, Japanese prisons held 34,268 people against a total capacity of 63,923 places — about 54 percent occupancy. The number of prisoners has been declining for years, but their composition is aging faster than the total number is shrinking: the share of elderly prisoners is growing year by year.
- Are prisoners in Japan required to work?
- Until June 1, 2025 — yes, if the sentence was handed down as 懲役 (chōeki), where labor was part of the punishment itself; the type without mandatory labor was called 禁錮 (kinko). From that date, both types were merged into the punishment 拘禁刑, and labor ceased to be a mandatory part of the sentence — it remains, but now as part of rehabilitation.
- How does the kōkinkei punishment differ from the previous two types?
- 拘禁刑 (kōkinkei) replaced the two previous types of imprisonment — 懲役 with mandatory labor and 禁錮 without it. The law was passed by the House of Councillors on June 13, 2022, and came into force on June 1, 2025. The point of the reform is not punishment by labor but more time for study and individual work with elderly and young prisoners.
- Is the death penalty retained in Japan?
- Yes, the death penalty is retained in Japan and carried out by hanging. The Minister of Justice signs the order for each execution individually. Article 475 of the Code of Criminal Procedure allows six months for this, but the deadline is considered advisory and is almost never met: in 2014–2023, the wait averaged about nine years.
- Which kanji are used to write the word "prison"?
- "Prison" in Japanese is 刑務所 (keimusho), literally "place of punishment service": 刑 means "punishment," 務 — "duty," 所 — "place." Other words on the topic are made from the same character 刑: 受刑者 — a prisoner serving a sentence, and 刑務作業 — prison labor inside the institution.
Sources
Updated: 2026-09-22