Just because Ford had people working shifts and that ended up 40 hours a week a century ago, doesn't mean it's the optimum. Why are other countries able to shorten the work week and the US doesn't?
By the early 1900s, many industries had adopted the eight-hour workday, but most people were still working six days a week. That continued until 1926 when Henry Ford removed one required day of work from his employees’ schedules.
Ford’s employees had been working 48 hours a week: eight-hour days and six-day weeks. Removing one day resulted in eight-hour shifts for five days a week—what we now know as the 40-hour workweek.
https://www.inc.com/john-brandon/finlands-prime-minister-suggests-a-four-day-work-week-six-hour-days-sign-me-up.html
Sweden has tried a six-hour workday and productivity improved. Microsoft recently announced a successful trial in Japan related to working only four days. The research on this topic suggests that working harder over shorter periods is best because we do optimal work; when we work longer hours, our productivity trails off.
https://20somethingfinance.com/american-hours-worked-productivity-vacation/
So there is some evidence that the 40-hour workweek is too long. It’s not enough to come to a definitive conclusion, but it’s certainly enough evidence for HR professionals to consider the potential benefits of reducing the number of hours in the workweek for their companies.
By the early 1900s, many industries had adopted the eight-hour workday, but most people were still working six days a week. That continued until 1926 when Henry Ford removed one required day of work from his employees’ schedules.
Ford’s employees had been working 48 hours a week: eight-hour days and six-day weeks. Removing one day resulted in eight-hour shifts for five days a week—what we now know as the 40-hour workweek.
https://www.inc.com/john-brandon/finlands-prime-minister-suggests-a-four-day-work-week-six-hour-days-sign-me-up.html
Sweden has tried a six-hour workday and productivity improved. Microsoft recently announced a successful trial in Japan related to working only four days. The research on this topic suggests that working harder over shorter periods is best because we do optimal work; when we work longer hours, our productivity trails off.
https://20somethingfinance.com/american-hours-worked-productivity-vacation/
So there is some evidence that the 40-hour workweek is too long. It’s not enough to come to a definitive conclusion, but it’s certainly enough evidence for HR professionals to consider the potential benefits of reducing the number of hours in the workweek for their companies.
We had two people leave 4 months ago and upper management has been taking their sweet time filling the positions.. Been involved in a project that has a deadline of end of January so 50 hours has been a short week , with some Saturday's thrown in.. Yea, me.. 
good one
Working too much is for the birds. 
