I'm highly sceptical of this meme online that office workers in Scandinavia, Germany etc quickly get their work done and focus on productivity and leave as early as they can each day instead of waiting till 1730 or whatever. I know better now that this doesn't actually exist anymore these days.
Nope, working in Norway, I can confirm that the office gets very empty very quickly after 16:00, and more than once have I been reminded not to stay all day when I was still at my desk around 17:00.