There are about 15 national holidays in Japan. Also, if you stay at the same company (which most people tend to do if they can) you're entitled to an additional

There are about 15 national holidays in Japan. Also, if you stay at the same company (which most people tend to do if they can) you're entitled to an additional vacation day every year up to 20 days. So a person with a 5-year tenure will have 15 + 15 = 30 days a year.