Angela Walton is suing the Department of Agriculture and her former co-worker, Robert Brogden, according to court documents.
Walton said Brogden exposed himself and rubbed his genitals on her neck when they worked together in 2007.
A conference was held in federal court Tuesday. Department of Agriculture officials said they investigated immediately and want the case dismissed.
Neither Walton or Brogden still work for the department.