Everybody will be happy about this scenario but with so many questions!
An obvious objection might be: “How could we afford this?” But there are serious economic and technological reasons for why governments, political parties, think tanks and social movements should all start to think about advocating for the implementation of three-day weekends.
This complex situation may help to get more relaxation.
It could, and it couldn’t. Our current system is a product of our mindset and a constant reproduction of that mindset. To change that mindset is the hard part. We are used to work 5 days a week and then make a 2 day break. There are jobs and there are people that don’t need that break and people who also like to do those jobs and don’t need a 2 day break. Those people will work every day for a certain period of time and, because of our system, will have a certain amount of time off and they’ll go on vacation for a really long time. Why not, they’ve earned it.
Then there are other people that like to work longer days, say 10h work a day. After 4 days, they’ll have worked 40h while others will have worked 32h in the same amount of time. Why shouldn’t they have three days off? Totally fair.
Now, what happens if everybody decides to work only 4 days a week and not increase the work hours per day? Well, the amount of work done would probably decrease, since there are certain limitations to productivity. But then again, people tend to adapt the amount of work to the time allotted. Some people would procrastinate less at work and get the work done. Others would just work the same way whatsoever and have done less at the end of the week.
There are production lines that work 7 days a week with workers only working 5 days a week, so the workload of a certain production step will be split among several people. If you have people working less hours a week, the work will have to be divided among more people. Less unemployed, but also less wage for each of the workers, since there are not more products being sold. Less purchasing power. Less products being sold. Less products have to be produced. Less workers needed in the industry. More unemployed again. All stays the old way except for the boss who will earn less money.
Still, there are a lot of psychologists that believe it would make the people happier if they would be “working” only 4 days and the other 3 days would be left for them to do something productive. In this view, society wins from more happier people. Experiments have shown that the vast majority of people doesn’t use their newly found time for either something productive that benefits society nor do they do something that makes them happier (which was also believed to benefit society, but in other ways).