CN (TSX: CNR) (NYSE: CNI) announced today that it has negotiated a tentative labour agreement with the Teamsters Canada Rail Conference-Rail Canada Traffic Controllers (TCRC-RCTC) union that represents rail traffic controllers in Canada. The four-year agreement would provide wage increases and benefit improvements to approximately 180 employees. Details of the agreement are being withheld pending ratification by union members. The union is expected to announce the results of the ratification vote before the end of February 2015.