How isn't that already the case with 10 x 8 hour days? or 8.5 etc?
Your linked article mentions another interesting idea: that an additional 9 minutes a day is more than 5 days a year.
I used to work for a medium sized company (~500 staff) that made us all work 10 extra minutes each day "off the clock", but then gave it back in the form of a number of whole and half days throughout the year when the company would be closed for business. Usually that meant that we'd get an extra day off before a long weekend or bank holiday, an additional day before christmas, that sort of thing. This was on top of 33 days of paid annual leave, so a sweet deal.