For the TTC strike: ATU 113 – Contact List

Just in case the strike goes ahead, and you need to tell someone exactly how you feel:

Amalgamated Transit Union, Local 113
812 Wilson Avenue
Downsview, Ontario
M3K 1E5

Phone: (416) 398-5113
Out of Town: 1-800-245-9929
Fax: (416) 398-4978

Note: All correspondence should be addressed to the Secretary-Treasurer.

— from the ATU 113 – Contact List. Bob Kinnear is the president and business agent.

You also might want the TTC Contact Details.