(Undated)  --  One of the world's richest men is proposing a three-day work week.

Mexican billionaire Carlos Slim believes changing to a shorter work week would make sense if people put in eleven hour workdays.  The "Financial Times" quotes Slim, the second richest person on Earth, as suggesting that people would also have to keep working until age 70 or longer.  

Speaking at a recent conference in Paraguay, the CEO of Telmex explained "people are going to have to work for more years" while still being able to relax and enjoy their quality of life.