YOU'RE ONLY PRODUCTIVE TWO HOURS A DAY, WHY STAY AT WORK THREE EXTRA HOURS?:

Carlos Slim, the Mexican telecom tycoon worth over $80 billion, believes life would be better with a three-day work week.

"You should have more time for you during all of your life -- not when you're 65 and retired," Slim told CNNMoney's Christine Romans on Tuesday.

But if Slim had his way, people would also work longer days and much later in life. He suggested 11-hour shifts and pushing the retirement age to 75.

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