One question i am asking repeatedly is what is exactly the work they do for 5 extended hours? i have seen people barely work 4 out of 8 hours and being super productive!
Either almost literally nothing, or the work that should have been covered by hiring more staff. It’s either of those extremes and as far as I’ve seen (working in various Japanese offices for almost a decade now) rarely anything between those.
Some were mentioning it is more about sticking around until the boss leaves. Apparently it isn't so important that work is getting done, just the perception that you are working hard (actually working long.)