Following Welch's retirement from General Electric, he became an adviser to private equity firm Clayton, Dubilier & Rice and to the chief executive of IAC, Barry Diller.[27][28] In addition to his consulting and advisory roles, Welch has been active on the public speaking circuit and co-wrote a popular column for BusinessWeek with his wife, Suzy, for four years until November 2009. The column was syndicated by The New York Times.[28][29]