At Berkshire Hathaway, chairman Warren Buffett and his right-hand man Charlie Munger search for specific traits when hiring the company's board of directors and managers.

"At Berkshire for decades, we've given the three factors in addition to integrity for board membership," Buffett said on CNBC's "Squawk Box" on Monday. "We want people who are business-savvy, we want them to have a strong personal interest in Berkshire itself and we've got directors who really represent shareholders at Berkshire."