ONA

Ontario Gaming East Limited Partnership O/A Shorelines Slots at Kawartha Downs / Service Employees International Union, Local 2

2025–2029 · Other Services

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Ontario Provincial Building And Construction Trades Council / Canadian Office and Professional Employees Union, Local 343

2022–2025 · Other Services

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Ontario Secondary School Teachers' Federation (OSSTF District 25) / Canadian Office And Professional Employees Union (COPE), Local 225

2020–2023 · Other Services

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OPS Event Rentals Inc. / Labourers' International Union of North America, Local 506

2025–2026 · Other Services

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Opta Inc / United Steel, Paper And Forestry, Rubber, Manufacturing, Energy, Allied Industrial And Service Workers International Union, Local 8782

2024–2027 · Manufacturing

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Orchard Terrace Care Centre / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Orillia Christian Centre / United Food and Commercial Workers International Union, Local 175

2025–2028 · Health ? Social Services

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Orillia Long Term Care Centre Inc. o/a Leacock Care Centre / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Orillia Soldiers Memorial Hospital / Ontario Nurses' Association Allied Health Professional

2023–2025 · Health ? Social Services

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Orin Enterprises Inc. / International Union of Operating Engineers, Local 793

2025–2028 · Construction

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Ornge Air / Office And Professional Employees International Union

2024–2027 · Health ? Social Services

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Ortec Environment Services Inc. / United Steel, Paper And Forestry, Rubber, Manufacturing, Energy, Allied Industrial And Service Workers International Union, Local 4153-25

2024–2027 · Other Services

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Oshawa Community Credit Union Ltd / International Association Of Machinists And Aerospace Workers

2019–2023 · Trade and Finance

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OSP Contractors Inc. / International Union of Operating Engineers, Local 793

2020–2024 · Construction

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Ottawa Community Housing Corporation / Civic Institute of Professional Personnel

2022–2024 · Other Services

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Ottawa Convention Centre / United Steel, Paper And Forestry, Rubber, Manufacturing, Energy, Allied Industrial And Service Workers International Union

2022–2025 · Other Services

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Ottawa Fertility Centre Inc. / Ontario Nurses' Association

2021–2024 · Health ? Social Services

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Ottawa Flyer Force, A Division of Postmedia Network Inc. / United Food and Commercial Workers International Union, Local 175

2024–2026 · Other Services

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Ottawa River Power Corporation / International Brotherhood Of Electrical Workers, Local 636

2019–2024 · Transport, Communications, ? Utilities

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Ottawa Young Men's and Young Women's Christian Association / International Union Of Operating Engineers, Local 772

2022–2024 · Health ? Social Services

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Outer Construction Inc. / International Union of Operating Engineers, Local 793

2023–2025 · Construction

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Outside Property Maintenance / Labourers' International Union Of North America, Local 1089

2020–2024 · Construction

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Oxford Builders Supplies Inc. / International Union of Operating Engineers, Local 793

2025–2028 · Construction

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Oxford Living, Inspirit Residences / Labourers' International Union of North America, Local 3000

2023–2025 · Health ? Social Services

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Oxford Living, Inspirit Residences / Labourers’ International Union of North America, Local 3000

2020–2023 · Health ? Social Services

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Oxford Living o/a Highland Place Retirement Residence / Labourers' International Union of North America, Local 3000

2023–2025 · Health ? Social Services

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Oxnard Development Inc. o/a Oxnard Homes, Oxnard Development Corporation, Oxnard Potters Gate Inc., Oxnard Group Inc., and 2385667 Ontario Inc. / Carpenters' Regional Council, United Brotherhood of Carpenters and Joiners of America

2022–2025 · Construction

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Pacific Wood Trim Ltd. / Labourers' International Union of North America, Local 183

2025–2028 · Construction

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Palace, Alexandria / Ontario Nurses' Association

2021–2024 · Health ? Social Services

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Palmer Construction Group Inc / International Union of Operating Engineers, Local 793

2021–2024 · Construction

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