casual reminder for US readers: this is all pretty common fare in US prisons as well. the 13th amendment to the US constitution does not cover prisoners. As such, most are forced to work, given a token salary to keep up appearances, and punished with solitary confinement if they do not comply.
https://www.themarshallproject.org/2022/05/31/how-the-newest...
https://en.wikipedia.org/wiki/Prison_rape_in_the_United_Stat...