So imagine a UFP society where every adult doesn't have to work more than 39 hrs per week because the government heavily regulates working hours.
According to this Australian University, a healthy work limit per week is 39 hrs.
Based on this study, I would want a government imposed regulation of 39 hrs per person, per week, per job.
Obviously, in the UFP, even the base level job is more than enough to sustain yourself as a individual. You'll only need 1 job. Any excess job is up to you.
But with flexible work hours based on which job you take and how you want to spread that load across each week, you can have a pretty nice schedule based on what you think your body can take and how you want to do it.
Imagine how flexible your work life balance would be if the company is required to offer a reasonable set of "Core Hours" and any other time you chooose to work is how you want to do things based on what your personal life schedule is.
If that means front loading certain days, then so be it.
If that means splitting it up evenly, so be it.
There is 168 hrs per week in the standard 7 day week on Earth.
168 - 39 = 129 hrs left.
8 hrs of sleep a day = 56 hrs.
129 hr - 56 hrs = 73 hrs left
What will you do with all that free time.
73 hrs of free time per week.
If you can live by sleeping less than 8 hrs per day, you get more free time.