Meetings were held with a mediator throughout the month, but talks were repeatedly broken off. The ATU had requested to send all issues not related to scheduling to arbitration, which the city refused as it requested all issues to be sent to an arbitrator. As the strike entered the 50th day, Ambrose, who had initially refused to table back-to-work legislation, announced that such legislation would be introduced. However, on January 29, the city and the ATU reached a deal that sent every issue to binding arbitration, thus ending the 51-day-long strike. On February 2, 2009, the O-Train Trillium Line started service after being out of service due to the strike. Buses followed the following Monday, February 9, 2009. Not all buses returned at once and OC Transpo said that all buses and routes were due to return by April 6, 2009. OC Transpo offered free transit for a week. December pass holders could either use their December passes until March or could get a refund. December pass holders were also subject to a 60% discount on March passes in order to win back transit users.