This article provides an overview of Japan's immigration laws, including the types of visas available to foreigners and what to do if you overstay your visa. Visitors can stay in Japan for up to 90 days with a valid tourist visa without needing additional paperwork or permits. Working visas are typically issued for periods of one year and student visas are usually valid for one year but can be extended depending on how long it takes students to complete their studies. Foreign nationals who have lived continuously in Japan for five years or more may be eligible for long-term resident status. If you overstay your visa by more than 90 days, you may face fines or deportation, so it is important to contact an experienced immigration lawyer as soon as possible.