Just as the present-day jail, the laborers were paid for their labor, but part of the wages were mandatorily saved in order to use it later as a funding for their rehabilitation when they were released after serving the three-year term.
現在の刑務所と同様に労働に対する手当を支給したが、手当額の一部を強制貯金し、3年の収容期間を終えて出所する際にはこの貯金を交付し、彼らの更生資金に当てさせるというシステムだった。