Construction

LTS Build Services Ltd. / Construction Workers Union, CLAC Local 52

2020–2023

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Maple Reinders Constructors Ltd / Construction Workers Local 52 affiliated with CLAC

2021–2024

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Marnoch Electrical Services Inc. operating as Marnoch Facilities Maintenance / Construction Workers Union, CLAC Local 52

2020–2023

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Northec-Fournier G.P. / Construction Workers Union, CLAC Local 52

2020–2023

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Purenvironmental / Labourers' International Union of North America, Ontario Provincial District Council

2021–2023 · ONA

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Reimar Forming / Allied Construction Employees Local 1030, United Brotherhood of Carpenters and Joiners of America

2022–2025

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Selco Elevator Ltd / International Union of Elevator Constructors, Local 50/90/96

2022–2025 · ONA

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Sierra General Contracting Inc.and Sierra Infrastructure Inc. and Sierra Bridge Inc. / Construction Workers Union, CLAC Local 53

2022–2025

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Signatory Employers/Contractors Non-ICI / Ontario Council of the International Union Of Painters And Allied Trades and Glaziers, Local 1795

2022–2025 · ONA

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Tamarack Developments Corporation / Christian Labour Association Of Canada

2022–2025

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Tera North Construction & Engineering Ltd / International Union of Operating Engineers, Local 793

2020–2025 · ONA

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002459854 Ontario Limited o/a Zilli Construction Ltd. / International Union of Operating Engineers, Local 793

2022–2025 · ONA

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002459854 Ontario Limited O/A Zilli Construction Ltd. / International Union of Operating Engineers, Local 793

2025–2028 · ONA

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002841691 Ontario Inc. c.o.b. as Elec-Tegrity Inc. / Construction Workers Union, CLAC Local 52

2022–2025

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1000231043 Ontario Ltd. operating as Maklee Contracting and Frecon Construction Limited / Christian Labour Association Of Canada

2022–2025

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1000235757 Ontario Inc. / International Union of Operating Engineers, Local 793

2025–2028 · ONA

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1000667800 Ontario Inc. c.o.b. as G.S. Sheet Metal / Construction Workers Union, CLAC, Local 6

2023–2026

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1006057 Ontario Limited o/a Niagara Olympia Homes / Allied Construction Employees Local 1030, United Brotherhood of Carpenters and Joiners of America

2021–2025

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10407674 Canada Inc. o/a Smart Trim Group (Formerly 11149172 Ontario Inc. o/a Smart Design) / Labourers' International Union of North America, Local 183

2025–2028 · ONA

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1085511 Ontario Inc. O/A D. Petit Home Improvements / Carpenters and Allied Workers Local 27, United Brotherhood of Carpenters and Joiners of America

2022–2025

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1107436 Ontario Inc./ Carega Property Services/ Tek Cement Flooring Systems Inc. / Labourers' International Union of North America, Local 183

2022–2025 · ONA

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1107436 Ontario Inc./Carega Property Services/Tek Cement Flooring Systems Inc. / Labourers' International Union of North America, Local 183

2025–2028 · ONA

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111008 Canada Inc. o/a ODS Marine / Carpenters' District Council of Ontario, United Brotherhood of Carpenters and Joiners of America

2022–2025

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111008 Canada Inc. o/a ODS Marine / Carpenters' Regional Council, United Brotherhood of Carpenters and Joiners of America (CRC)

2025–2028 · ONA

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11149172 Ontario Inc. o/a Smart Design / Labourers' International Union of North America, Local 183

2022–2025 · ONA

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1177020 Ontario Inc. o/a Acculine Road Markings and Acculine Pavement Markings / Labourers' International Union of North America, Local 1059

2024–2026 · ONA

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119745 Ontario Ltd o/a Sev-Con Trucking & Excavating / International Union of Operating Engineers, Local 793

2020–2024 · ONA

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1206731 Ontario Ltd. o/a Rapid Drainage Ltd. / International Union of Operating Engineers, Local 793

2023–2026 · ONA

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12155966 Canada Inc. / Labourers' International Union of North America, Local 183

2022–2025 · ONA

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1230995 Ontario Inc. o/a Badger Daylighting / International Union of Operating Engineers, Local 793

2023–2026 · ONA

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