Under a law of 1971, teachers at Japanese public schools receive a teaching adjustment allowance, the kyōshoku chōseigaku, equal to 4 percent of their basic pay. They receive no overtime or holiday pay. The allowance is paid instead. Critics call the system teigaku hatarakase hōdai, all-you-can-work for a fixed price.
In 2025, the Diet passed an amendment. It raises the allowance by one point a year, to 10 percent by 2031. It is the first increase since the law took effect in 1972.