Have you checked the minimum wage?

南町田


http://tokyo-roudoukyoku.jsite.mhlw.go.jp/var/rev0/0146/0871/2017925101956.pdf
http://ibaraki-roudoukyoku.jsite.mhlw.go.jp/library/ibaraki-roudoukyoku/chingin/796_eng.pdf

Tokyo’s minimum wage has been changed.
From October 1, 2017
hourly rate \958 +\26
Minimum wage rules apply for both employers and employees.
Employers and employees; be sure to check the minimum wage.