Although he [Peter Drucker] helped many corporate executives succeed, he was appalled when the level of Fortune 500 CEO pay in America ballooned to hundreds of times that of the average worker. He argued in a 1984 essay that CEO compensation should be no more than 20 times what the rank and file make — especially at companies where thousands of employees are being laid off. “This is morally and socially unforgivable,” Drucker wrote, “and we will pay a heavy price for it.
http://en.wikipedia.org/wiki/Peter_Drucker