Ruemmler originally planned to leave the job as one of President Obama's closest advisors by the end of the year. She agreed to delay that move after speaking with the president, the official said.
It's not the first time Obama convinced the former Latham & Watkins partner to stay longer than she intended. She had agreed to stay on as the White House's top lawyer through the November presidential election, but Obama asked her to stay and she agreed.
Ruemmler, the third White House counsel to serve Obama, was among the youngest lawyers ever to take the job. The White House has not publicly said who's being eyed as a possible replacement. Ruemmler succeeded Robert Bauer as White House counsel. Gregory Craig was the president's first top in-house attorney.
The Associated Press first reported on Ruemmler's plans Wednesday.