The 40 hour workweek is archaic and counterproductive. The extra hour in every day is often not utilized efficiently because there are diminishing returns to work. I believe that we should reduce the workweek to 35 hours so that people have more time to be able to care for their family and pursue other life goals. People who really need to work will be able to benefit from overtime.
Except most jobs where people are absolutely working extra for the money don't allow overtime unless absolutely necessary since it costs their employer too much to pay the overtime rates. All this does it hurt actual working class people, especially those that work for an hourly rate, as it means full time workers get less hours than usual, and part time workers get cut even more so they don't risk accidentally qualifying for full time.