[patio11]

It is my anecdotal impression that this is common in some European countries.

Japanese leave policies are historically pretty simple: the government says you get X weeks, buuuuut X is an inconvenient number for us, so you probably want to look around the room and conform to the practices of your coworkers, which are closer to Y days. Also, for you ladies: remember that the traditional expectation is that you have unlimited maternity leave when you leave formal employment after marrying or having a child. (Some re-enter when the child goes to school. This is largely not compatible with career advancement, with rare exceptions like e.g. translation/interpretation.)