Employees at Dell Inc.'s call center in Roseburg have sued, claiming Dell violates federal and state wage and hour laws.David Norman and Walter Romas, both of Roseburg, have alleged that Dell denies earned wages and overtime pay to its sales representatives in Roseburg and nationwide, according to a court complaint filed Feb. 8 at the United States District Court in Eugene.Norman is a current employee at Dell's call center in Roseburg, while Romas worked there from December 2003 to July 2006. They are represented by attorneys in Kansas City, Mo., and Eugene. They are seeking to certify the case as …