Professor Robert Daines spoke with the Philadelphia Inquirer's Bob Fernandez about the $29.1 million received by Comcast Corp. CEO Brian Roberts and how the compensation is not uncommon with the competitiveness of the current labor markets. 

Comcast Corp. CEO Brian Roberts was compensated $29.1 million in salary, stock options, bonus, pension contributions, and perks such as use of a corporate jet in 2012.

That's more than 700 times what the typical U.S. worker earned in 2012, and Roberts, who was third on the list of top-paid Philadelphia-area CEOs last year, could top the list this year.

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"Labor markets are competitive," said Robert Daines, a Stanford University law professor and expert in executive compensation, and Comcast and others in the entertainment industry have to match the compensation at peer companies.