It is hard enough for foreign residents dealing with such issues as visas and taxes for themselves, but it can definitely get trickier when children grow old enough to start earning their keep.

This week's question comes from the parent of a teenage son who wants to start work. Since both parents are foreign nationals, he has been attending school in Japan on a dependent visa as a student until now. S writes:

"My son graduated from a Japanese public high school this year. He wants to get paid work in order to save towards either tertiary or vocational studies. How much is he allowed to earn per month or per year before he gets taxed? (He has already obtained 'permission to engage in a different activity.')"