The World: Chicago - Arc reshuffles senior roles as Landsberg stays on

Marc Landsberg, the worldwide president of Arc, has reversed his decision to leave the agency.

His announcement has led to a reshuffle of executive duties at Arc and its sister agency, Leo Burnett.

Richard Stoddart, the North American co-president, will oversee the Chicago and Detroit offices of both agencies, as well as focusing on account management.

Juan Carlos Ortiz, the second co-president, will control Burnett operations in Toronto and New Mexico and its Hispanic subsidiary, Lapiz, as well as Arc's San Francisco office.

Landsberg said that he had realised Burnett was the best place for him to exercise his entrepreneurial spirit.