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OTIP HEAD OFFICE
125 Northfield Drive West
PO Box 218 Waterloo, ON N2J 3Z9
NOTE: If you are sending something by courier the postal code is N2L 6K4.
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Benefits Services
1-866-783-6847
Hours of operation: Monday to Friday 8 a.m. to 7 p.m. (ET)
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Benefits Services - Technical Support
1-888-521-0023
Hours of operation: Monday to Friday 8 a.m. to 7 p.m. (ET)
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