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Middlesex Hospital Alliance (Four Counties Health Services) / Ontario Nurses' Association

2025–2027 · Health ? Social Services

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Middlesex Terrace Nursing Home / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Midland Gardens Care Community / Ontario Nurses' Association

2021–2024 · Health ? Social Services

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Miller Concrete, A Division Of Miller Paving Ltd. / International Union of Operating Engineers, Local 793

2024–2028 · Manufacturing

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Miller Northwest Limited / International Union of Operating Engineers, Local 793

2020–2023 · Manufacturing

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Mintech Canada Inc / United Steel, Paper And Forestry, Rubber, Manufacturing, Energy, Allied Industrial And Service Workers International Union, Local 8748

2022–2027 · Trade and Finance

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Minto Counselling Centre / Canadian Office & Professional Employees Union (COPE), Local 523

2022–2024 · Health ? Social Services

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MJ (LCC) Limited Partnership / Labourers' International Union of North America, Local 1059

2026–2030 · Other Services

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Mobilex Terminal Ltd. / International Union of Operating Engineers Local 793

2020–2023 · Trade and Finance

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Mobil Services Inc. / Labourers' International Union of North America, Local 1059

2021–2023 · Construction

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Model Railings Inc. / International Association Of Bridge, Structural, Ornamental And Reinforcing Iron Workers, Local 721

2022–2025 · Construction

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Modern Excavating & Grading / International Union of Operating Engineers, Local 793

2022–2025 · Construction

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Molson Coors Breweries / International Union Of Operating Engineers, Local 772

2023–2025 · Manufacturing

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Momentum Credit Union Ltd / Canadian Office and Professional Employees Union, Local 343

2022–2024 · Trade and Finance

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Mon Sheong Home for the Aged / Ontario Nurses' Association

2022–2024 · Health ? Social Services

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Mon Sheong Stouffville Long Term Care Centre / Service Employees International Union, Local 1 Canada

2022–2024 · Health ? Social Services

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Montebello Packaging, A Division of Great Pacific Enterprises Inc. / United Steel, Paper And Forestry, Rubber, Manufacturing, Energy, Allied Industrial And Service Workers International Union, Local 6565

2021–2025 · Manufacturing

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Mopal Construction Limited / International Union of Operating Engineers, Local 793

2025–2028 · Construction

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Morguard NAR (Ontario) Holdings Limited / Labourers' International Union of North America, Local 183

2021–2023 · Other Services

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Morrow Equipment Co. L.L.C. / International Union of Operating Engineers, Local 793

2025–2028 · Construction

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M. Sullivan & Son Ltd. / International Union of Operating Engineers, Local 793

2022–2025 · Construction

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M.T.C.C. No. 905 / Labourers' International Union of North America, Local 183

2021–2025 · Other Services

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MT Leone Contracting Ltd. / Labourers' International Union of North America, Local 183

2025–2028 · Construction

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MT Maintenace Inc. / Labourers' International Union of North America, Local 183

2020–2023 · Other Services

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Multiseal Waterproofing & Restoration / Labourers' International Union of North America, Local 183

2025–2028 · Construction

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Multi Task Construction Inc. / Labourers' International Union of North America, Local 183

2022–2025 · Construction

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Multy Home LP / Labourers' International Union of North America, Local 183

2026–2028 · Manufacturing

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Municipality of Marmora and Lake / International Union of Operating Engineers, Local 793

2025–2027 · Public Administration

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Murphy Machinery Co. / International Union of Operating Engineers, Local 793

2023–2025 · Construction

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Muskoka Shores Care Community / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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