Even in France, where the base legal hours are only 35 hours a week, intellectual/upper professions in a full-time position work an average of 43 hours a week.
That's the average which includes women, who work 10% less (in terms of number of hours worked) than men. If you only consider men, you reach an average week of 45 hours for those professions.
The US's post-WW2 dominance doesn't explain why layers of lower management from the US stationed abroad insist in scheduling 3 weeks worth of work into 1 week in spite of being fully aware of how long the task takes, and afterwards boast to their leadership that their non-US teams outperformed US-based teams by a long shot while leaving out that team some non-US developers had to pull consecutive all-nighters to pull it off.
Irish lawyers and doctors work well over 40 hours a week on average too. I feel pretty confident the same is true in finance. Tax professionals in Spain do too. That about exhausts my personal knowledge of working hours in Europe but I kind of doubt management work less than 40 hours a week anywhere, even the civil service.
> and typically threatened to fire people pretty much each and every single week if they did not met those unrealistic goals.
The secret to greater American productivity and hence wealth. People just work more hours.
YMMV but the only time I ever experienced the myth that "working over 40 hours a week is the norm" was when I started working at a US-based company.
And the only reason unpaid overtime was the norm was that managers, specially skip-level management, did a piss-poor job establishing sane goals based on realistic time-frames, and typically threatened to fire people pretty much each and every single week if they did not met those unrealistic goals.
Strangely enough, everywhere else people managed to do their job within the 40hours work week.