Metrolinx is currently negotiating with Amalgamated Transit Union Local 1587, which represents 1,800 GO Transit workers, including the agency’s 800 bus drivers. Although negotiations continue as of this writing, the union has officially brought forward notice of a strike deadline set for the evening of Sunday, June 1st. If GO Bus drivers hit the picket lines, GO Bus service would likely be suspended Monday morning. GO Trains other than the weekend Niagara Falls and Barrie services would not be affected and would continue to roll. Metrolinx has also stated that non-union and management personnel would be used to keep GO stations open.
As negotiations are continuing, there is no guarantee that GO workers will strike, but Metrolinx has warned that commuters should be prepared for disruptions if the Sunday strike deadline passes without an agreement. Further details are available at the Toronto Star.