Federal Reserve Chairman Ben S. Bernanke said he’s “spoken to the president a bit” about his future and that he feels no personal responsibility to stay at the helm until the Fed winds down its unprecedented policies to stimulate the economy.

“I don’t think that I’m the only person in the world who can manage the exit,” Bernanke said when asked at a news conference in Washington if he’s discussed his plans with President Barack Obama. His term expires at the end of January…

Chris Rupkey, chief financial economist at Bank of Tokyo- Mitsubishi UFJ Ltd. in New York, disagreed with Bernanke’s statement, saying he has an obligation to stay.

“His knowledge and experience is too valuable to let him go,” Rupkey said today in an e-mail. “The architect of the policy needs to see it through to full completion.”