[TimPC]

Not all hours are created equal. If you're doing simple enough tasks perhaps your output is relatively stable. When I work on hard problems I've had single hours that can outperform a day or two. Getting rid of most/all of those key creative moments by keeping employees in a constant state of fatigue from large hours is bad. Studies show for typical employees after about 6 weeks of 70h work weeks a 70h week is producing less than a 40h week for a fresh non-overworked employee. So pretty quickly hours become half-hours in terms of production.