I contend that Robert Benmosche, CEO of AIG, had an incorrect understanding of corporate governance when he told Harvey Golub, then-chairman of the board, on July 14, 2010, “One of us should stay and one of us should go.” He should have, “Please let me know if the board would like me to go.” Put bluntly, the CEO works for the board, not vice versa. The previous May, Benmosche told Golub, “We can’t work together. I need a partner who I can bounce ideas off and give me advice.” However,a CEO and a chairman do not work together as partners. Rather, the chairman—and the board more generally—act on behalf of the stockholders to oversee the management, which the board has hired. In other words, a CEO is an employee whereas a chairman is not. Benmosche’s comment is actually rather presumptuous.
The full essay is at "Corporate Governance at AIG."