OLRB Accredited Employers' Organizations


OLRB Accredited Employers' Organizations

Below is an alphabetical listing of all accreditations granted since 1971 by the Ontario Labour Relations Board to employers' organizations in the construction industry as authorized by section 134 of the Labour Relations Act, 1995 or predecessor legislation. The system of accreditation was established by The Labour Relations Amendment Act, 1970 (No. 2), S.O. 1970, c.85, in force February 15, 1971. For OLRB Accreditation Certificates please contact the library owtl@wsiat.ca for copies.

Some Key Notes:

  1. Decisions - When available, we provide a link to the full-text of the decision. When an electronic copy of the decision is not available / accessible we'll provide you with an OLRB Reports and / or Quicklaw cite. Note that reported versions are often abridged and, if so, are marked as such. Unabridged versions of these decisions and decisions marked "unreported" will be available only from the Library, to obtain access to these please contact us.
  2. Dates - The date shown is the date of the OLRB decision in which the association was accredited. This sometimes differs slightly from the date on the certificate. If there is a discrepancy, then the date of the decision prevails.
  3. Geographic areas are approximate, (except for province-wide accreditations). Consult the decision/certificate for exact descriptions.
  4. Sectors - Section 126 (1) of the Labour Relations Act, 1995 defines "sector" as follows: "sector" means a division of the construction industry as determined by work characteristics and includes the industrial, commercial and institutional sector, the residential sector, the sewers and watermains sector, the roads sector, the heavy engineering sector, the pipeline sector and the electrical power systems sector. In this list "ICI" denotes the industrial, commercial and institutional sector. The sewers and watermains sector was originally referred to as the "sewers, tunnels and watermains sector". The word "tunnels" was removed by The Labour Relations Amendment Act, 1975, S.O. 1975, c.76 which came into force on July 18, 1975 . This amendment appears to have been precipitated by a debate over whether subway tunnels should fall into the heavy engineering sector or the sewers, tunnels and watermains sector (see The Heavy Construction Association of Toronto, [1973] OLRB Rep. May 245).

List of Accreditation Certificates and Decisions

Architectural Glass & Metal Contractors Association

Association Des Constructeurs De Murs Et Plafonds D'Ottawa

Association of Millwrighting Contractors of Ontario

Boilermaker Contractors' Association of Ontario

Canadian Automatic Sprinkler Association

Central Southwest Ontario Heavy Civil Construction Association

Central Southwest Ontario Heavy Civil Construction Association

Construction Builders Association of Durham

Durham Residential Construction Labour Bureau

Electrical Construction Association of Hamilton Inc.

Electrical Contractors Association of Central Ontario

Electrical Contractors Association of London

Electrical Contractors' Association of Ottawa

Electrical Contractors Association, Quinte-St. Lawrence

Electrical Contractors Association of Toronto

Electrical Division of the Construction Association of Thunder Bay

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Electrical Power Systems Construction Association

Frame Carpentry Contractors Association

General Contractors' Section of the Toronto Construction Association

General Contractors' Section of the Toronto Construction Association

General Contractors' Section of the Toronto Construction Association

General Contractors' Section of the Toronto Construction Association

General Contractors' Section of the Toronto Construction Association

Greater Hamilton & Niagara Construction Association

Greater Hamilton & Niagara Construction Association

Greater Toronto Electrical Contractors Association

Greater Toronto Railing Association

Greater Toronto Sewer and Watermain Contractors Association

Greater Toronto Sewer and Watermain Contractors Association

Greater Toronto Sewer and Watermain Contractors Association

Greater Toronto Sewer and Watermain Contractors Association

Greater Toronto Sewer and Watermain Contractors Association

Hamilton and District Sheet Metal Contractors Inc.

Hamilton and District Sheet Metal Contractors Inc.

Heavy Construction Association of Toronto

Heavy Construction Association of Windsor

Heavy Construction Association of Windsor

Independent Plumbing & Heating Contractors Association

Interior Systems Contractors Association of Ontario

Interior Systems Contractors Association of Ontario

Kitchener-Waterloo Construction Association

Kitchener-Waterloo Construction Association

London Sewer and Watermain, Curb, Gutter and Sidewalk Contractors Association

London Sewer and Watermain, Curb, Gutter and Sidewalk Contractors Association

London Sheet Metal Contractors Association

Masonry Contractors' Association of Toronto

Mechanical Contractors Association Hamilton

Mechanical Contractors Association, Kingston

Mechanical Contractors Association, Kingston

Mechanical Contractors Association of London

Mechanical Contractors Association Niagara

Mechanical Contractors Association Niagara

Mechanical Contractors Association Ontario

Mechanical Contractors Association of Ottawa

Mechanical Contractors Association of Ottawa

Mechanical Contractors Association of Ottawa

Mechanical Contractors Association of Ottawa

Mechanical Contractors Association of Thunder Bay

Mechanical Contractors Association of Toronto

Mechanical Contractors Association of Windsor

Mechanical Contractors Association Zone 10

Metropolitan Plumbing and Heating Contractors Association, A Division of the Mechanical Contractors Association Toronto

Metropolitan Toronto Apartment Builders Association

Metropolitan Toronto Residential Painting Contractors Association

Metropolitan Toronto Road Builders Association

Metropolitan Toronto Sewer and Watermain Contractors Association

Metropolitan Toronto Sewer and Watermain Contractors Association

Metropolitan Toronto Sewer and Watermain Contractors Association

National Capital Road Builders Association

National Capital Roadbuilders Association

NDT Management Association
[Note: NDT=Non-Destructive Testing]

Ontario Concrete & Drain Contractors Association

Ontario Concrete and Drain Contractors Association

Ontario Erectors Association

Ontario Erectors Association

Ontario Erectors Association

Ontario Erectors Association

Ontario Erectors Association

Ontario Erectors Association

Ontario Formwork Association

Ontario Precast Concrete Manufacturers' Association, Erectors Division

Ontario Railroad Contractors Association

Ontario Refrigeration and Air Conditioning Contractors Association

Ontario Traffic Control Contractors' Association

Pipe Line Contractors Association of Canada

Pipe Line Contractors Association of Canada

Pipe Line Contractors Association of Canada

Pipe Line Contractors Association of Canada

Residential Framing Contractors Association of Metro Toronto & Vicinity Inc.

Residential Heating Ventilation Contractors Association

Residential Low Rise Forming Contractors Association of Metropolitan Toronto and Vicinity

Residential Low Rise Forming Contractors Association of Metropolitan Toronto and Vicinity

Residential Sheet Metal Contractors Organization

Residential Tile Contractors' Association

Resilient Flooring Contractors' Association of Ontario

Roofing Division of the Toronto Sheet Metal and Air Handling Group

Sudbury Electrical Contractors Association

Terrazzo, Tile & Marble Guild of Ontario, Inc.

Terrazzo, Tile & Marble Guild of Ontario, Inc.

Toronto and Area Road Builders Association

Toronto & Area Road Builders Association

Toronto Residential Construction Labour Bureau

Toronto Sheet Metal and Air Handling Group

Utility Contractors' Association of Ontario Incorporated

Utility Contractors’ Association of Ontario Incorporated

Walls and Ceilings Contractors Association of Ottawa- Association des constructeurs de murs et plafonds d'Ottawa

Walls and Ceilings Contractors Association of Ottawa- Association des constructeurs de murs et plafonds d'Ottawa

Waterloo-Wellington Sheet Metal Contractors Association

Windsor Electrical Contractors Association

Windsor Electrical Contractors Association

Windsor Sheet Metal Contractors Association

Wood Mill & Trim Owners Association of Ontario
(c.o.b. as Trim Association of Ontario)

Wood Mill & Trim Owners Association of Ontario
(c.o.b. as Trim Association of Ontario)