Washington (CNN) -- Larry Summers has agreed to work two weeks longer than planned as President Barack Obama's top economic adviser, a White House official said Wednesday.
Summers, who officially announced in September he planned to step down as director of the National Economic Council, had previously said his last day would be December 17.
"President Obama has asked Larry Summers to remain at the White House as NEC Director until the end of the year," the White House official said on condition of not being identified by name. "Dr. Summers has agreed to continue to serve through December 31st."
Obama has yet to name his replacement, but investment banker Roger Altman was widely believed to be the top contender.