Canadian Mental Health Association, Thames Valley Addiction and Mental Health Services / Ontario Public Service Employees Union on behalf of its Local 133
Ontario Ministry of Labour · Labour arbitration (Ontario) · Ontario, Canada · 2026-05-27
Why it matters
A labour arbitration between Canadian Mental Health Association, Thames Valley Addiction and Mental Health Services and Ontario Public Service Employees Union on behalf of its Local 133, on the issue of classification. The arbitrator was N/A N/A. For a student, it is an example of how Ontario's grievance arbitration system resolves disputes under a collective agreement: a neutral arbitrator interprets the agreement and issues a binding award, the everyday machinery of Canadian labour law.
Summary
A labour arbitration between Canadian Mental Health Association, Thames Valley Addiction and Mental Health Services and Ontario Public Service Employees Union on behalf of its Local 133, on the issue of classification. The arbitrator was N/A N/A. For a student, it is an example of how Ontario's grievance arbitration system resolves disputes under a collective agreement: a neutral arbitrator interprets the agreement and issues a binding award, the everyday machinery of Canadian labour law.
The detail
Parties: Canadian Mental Health Association, Thames Valley Addiction and Mental Health Services and Ontario Public Service Employees Union on behalf of its Local 133
Outcome: See the published award for the arbitrator's decision.
Applicable law: Ontario Labour Relations Act; the parties' collective agreement
Issues in play: Collective agreement interpretation
Read the full decision at Ontario Ministry of Labour ↗
Locus Standi links to the source decision and publishes its own plain-language summary. It does not reproduce the text of the award.