I feel like we totally could, and because of politics and lifestyle inflation, we don't. Take for example, doctors. We don't have enough doctors, they're overwo

I feel like we totally could, and because of politics and lifestyle inflation, we don't. Take for example, doctors. We don't have enough doctors, they're overworked, and to incentivize that system, we pay them quite a bit (at least in the US). 15/40 is 37.5%, and that "magic number of salary" that doesn't increase happiness is like $75k (I'd offer a better number here but this is one people tend to cling to), so if anyone makes over $200k/yr (most doctors, some lawyers and engineers), they could choose to work 15 hrs a week, still make a "satisfying" $75k/yr, and by being part-time, allow for more positions for the same work. This would especially be useful for doctors since there is a lack of them and their very nature is around the clock, so it would be useful to have more in the rotation. We have the means and the capital, but our society willfully chooses not to adopt this, and it seems a big part is because there is a stigma against being a part-time worker, as if only working part-time makes you a lower class citizen.