The average number of board committees among S&P 1500 companies has remained relatively stable at 4 committees per corporate board over the three-year period from 2008 to 2010, according to executive compensation data firm Equilar.

โ€œAmong S&P 1500 boards, the majority of boards (68 percent) have either three or four committees (2010). The most common committees are, unsurprisingly, the audit, compensation, and governance committees,โ€ it said in the 2011 Board Composition Series Report.