At least a dozen D.C. finance office workers have been given an ultimatum — resign or be fired — because their names appeared on checks written by the woman who masterminded the $48 million theft from the office, The Examiner has learned.

The employees received money between 2002 and 2007 from Harriette Walters, 51, who is sitting in a federal jail awaiting sentencing after pleading guilty to leading the city’s largest public corruption scam, sources said.