Yes, you can work part time on a Japan student visa. Students with a Japan student visa are allowed to work part-time, generally up to 28 hours each week while classes are in session and up to 40 hours each week during school breaks. To gain legal authorization, students must apply for Permission to Engage in Activity Other Than That Permitted when they arrive at the airport or at a regional immigration office. This work authorization helps students pay for their living costs while they study.