> In any case 40% of Japanese workers are part-time - It's actually 45% of Japanese women workers. The percentage of men being part time is much lower around 1

> In any case 40% of Japanese workers are part-time - It's actually 45% of Japanese women workers. The percentage of men being part time is much lower around 12%. A big reason why your friend struggles finding anything else is that she's a woman and that Japan is an intensely sexist society.