n announcement is due to be made later this week, the report said, citing an unnamed Ladbrokes executive. "Chris has done the job longer than most chief executives. He has had enough, simple as that," an unnamed source was quoted as saying.
No one at Ladbrokes could be reached immediately for comment.
Bell became chief executive when Ladbrokes was split from the Hilton International hotels group in February 2006. Before that he was chief executive of Ladbrokes Worldwide.
He joined the company in 1991 and became managing director in 1995. He previously worked for drinks company Allied Domecq.
Bell told reporters last October that the recession had had a worse impact on the business than he had expected.
Looking ahead to 2010, Bell said: "Unemployment, in my view, is going to have to peak before things start to get better."