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Kwik Lok Ltd / Service Employees International Union, Local 2

2022–2025 · Manufacturing

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Labatt Breweries Ontario Division of Labatt Brewing Company Canada Limited / Service Employees International Union Local 2.ON Branch Local #50

2019–2025 · Manufacturing

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Labdara Lithuanian Nursing Home / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Labdara Lithuanian Nursing Home / Service Employees International Union, Local 1 Canada

2025–2026 · Health ? Social Services

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Labourers' International Union of North America, Local 1089 / Canadian Office and Professional Employees Union, Local 343

2024–2027 · Other Services

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Labourers Union Ontario Provincial Dist Council / Canadian Office and Professional Employees Union, Local 343

2024–2027 · Other Services

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Lacroix Construction Co. (Sudbury) Ltd. / International Union of Operating Engineers, Local 793

2025–2030 · Construction

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Lactalis (Previously Kraft Heinz Canada) / International Union of Operating Engineers, Local 772

2021–2027 · Manufacturing

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Lady Dunn Health Centre / Ontario Nurses' Association

2025–2027 · Health ? Social Services

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Lafarge Canada Inc. / Cement, Lime, Gypsum and Allied Workers Division of International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers, Local D494

2020–2023 · Agriculture and Natural Resources

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Lafarge Canada Inc. / International Union of Operating Engineers, Local 793

2021–2025 · Manufacturing

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Lafarge Canada Inc. / United Steel, Paper And Forestry, Rubber, Manufacturing, Energy, Allied Industrial And Service Workers International Union, Local 343

2022–2025 · Manufacturing

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Lafarge Ready Mix / International Union of Operating Engineers, Local 793

2021–2024 · Manufacturing

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Lakehead Sheet Metal Contractors' Association / Sheet Metal Workers' International Association, Local 397

2020–2023 · Manufacturing

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Lakeshore Area Multi-Service Project (LAMP) Community Health Centre / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Lakeside Long Term Care Centre / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Lakeside Long Term Care Centre / Service Employees International Union, Local 1 Canada

2024–2026 · Health ? Social Services

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Lakeside Retirement at Innisfil / Health, Office and Professional Employees a division of United Food and Commercial Workers' Canada Local 175

2023–2026 · Health ? Social Services

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Lamsar Engineers & Contractors / International Union of Operating Engineers, Local 793

2023–2025 · Construction

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Lanark Heights Ltc / Ontario Nurses' Association

2024–2026 · Health ? Social Services

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Land Construction Co. Ltd. / Labourers' International Union of North America, Local 183

2025–2028 · Construction

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Lange Transportation & Storage Ltd. / Labourers' International Union of North America, Local 506

2022–2024 · Other Services

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Lansdowne Excavation Limited / International Union of Operating Engineers, Local 793

2025–2028 · Construction

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Latcon (2009) Ltd. / Labourers' International Union of North America, Local 527

2025–2028 · Construction

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Laurentis Energy Partners / Society of United Professionals, IFPTE Local 160

2024–2026 · Transport, Communications, ? Utilities

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Lavoro Enterprises Inc / International Union of Operating Engineers, Local 793

2022–2025 · Construction

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

2025–2028 · Construction

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Leeds & Grenville Community Family Health Team (LGCFHT) / Ontario Nurses' Association

2021–2024 · Health ? Social Services

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Lehigh Hanson Materials Limited / International Brotherhood Of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers And Helpers, Local 494

2017–2023 · Manufacturing

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Lehmann Crane Services Ltd / International Union of Operating Engineers, Local 793

2025–2028 · Construction

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