According to MarketWatch: “The head of J.P. Morgan Chase‘s (JPM) retail banking operations said Thursday that the firm plans to trim 12,000 jobs from the headcount of Washington Mutual employees.”
Update (2-26-2009): Updated California WARN listing for J.P. Morgan (PDF document), Jul – Dec 2009 layoffs schedule
Update 2 (2-27-2009): JPMorgan Chase & Co. told investors Thursday that it will cut 14,000 jobs, up from a previously announced 9,200 in December, according to Dayton Business Journal