[stavros]

But, if there exist poorer countries, why is there a five-day work week instead of a seven-day one? Why aren't we all just working 24/7?

[phyzix5761]

In most poor countries workers are doing 10 hours per day 6 days a week. With a significant number of them doing 7 days a week.

[stavros]

The argument (maybe in a sibling comment) was that, if the US switched to a 4-day workweek, companies would simply offshore their work to poorer countries who work 5 days, so my question is, then why isn't the current workweek 7 days?

[amazingamazing]

There are Americans working 24/7, though. Surely you have heard of people working multiple menial full time jobs? Jobs are being offshored and cheaper immigrants are being imported who can be paid less. What more evidence do you need?