A line in BusinessWeek caught my eye, and might provoke some discussion this Labor Day weekend.  “3 hours:  Approximate time that an S&P 500 CEO had to work in 2007 to earn what a minimum-wage worker earned for the full year.”

The S&P 500 is a stock index that includes America’s largest publicly-held corporations.  BusinessWeek tells us that the CEOs at such a companies were paid more than $4,000 per hour.