It's not that hard to figure out.
4 jobs at 40 hours equals 5 jobs at 32 hours.
And as an employer, my per-employee loading costs go up by 20%.
Tell you what: Go to a single payer health care system, roll unemployment, disability, and retirement into a Basic Guaranteed Income program, and define away poverty because with a BGI, it doesn't exist, and I'll happily split up jobs into as many pieces as you want, down to 20 hours/week/worker, because it won't cost me extra to hire more people, as long as the same number of hours get worked.
Until then, thank your government unfunded mandates and offshoring for current unemployment levels (26%+, according to World Bank numbers, since DOL unemployment statistics only count people receiving unemployment insurance, and vastly underestimate the number of unemployed).
If you want to fix the offshoring problem, I can help with that, too, but you really need to abandon the TPP, modify NAFTA to eliminate the trans-shipment loophole, and eliminate MFN status for China (for starters; there's other things that will need to happen on top of that, but it's the minimum foundational bedrock necessary to move forward).