If you know it for a fact, could you supply some data that would help back this up?

I’m not saying they don’t, but legally Japanese workers have more paid time off than Americans [1]. Japan also has a larger number of public holidays, which while not legally enforced, are generally taken.

I’d be curious to see data about when people actually arrive at and leave work, and how many holidays are taken.

[1] 10+ days versus 0. https://en.m.wikipedia.org/wiki/List_of_minimum_annual_leave...