Differences between working as a Japanese salaryman vs Korean salaryman? On average, which country’s salarymen had more intense work culture/put in more hours?

It seems Japan and Korea both have intense work cultures. For those who have worked as a Japanese and Korean salaryman during similar time periods or at least have heard stories, were there any differences that stuck out?

And on average, which salarymen put in more hours/had a more intense work culture?

https://www.reddit.com/r/japan/comments/z5kqrh/differences_between_working_as_a_japanese/