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Progress through agreements

Our request for proposals (RFP) dictate the labour requirements and practices that tradespeople must follow, to maintain the safety and transparency that underpin everything we do.

See how collective labour agreements dictate how OPG operates.

Electrical Power Systems Construction Association (EPSCA)

EPSCA negotiates and administers collective agreements with the Building Trades for OPG and all contractors performing trades work on OPG generating sites.

Current EPSCA collective agreements:

  • Boilermakers
  • Carpenters
  • Cement Masons
  • IBEW – Generation (Electricians)
  • IBEW – Transmission (Electricians)
  • Insulators
  • Iron Workers
  • Labourers
  • Millwrights
  • Operating Engineers
  • Painters
  • Plasterers
  • Rodmen
  • Roofers
  • Sheet Metal Workers
  • Teamsters
  • Tile and Terrazzo
  • United Association (Plumbers & Pipefitters)

Building Trade Unions (BTUs)

In addition to EPSCA, OPG has collective agreements directly with two Building Trade Unions (BTU) which obligate contractors to comply with terms and conditions when working at OPG sites. They are the Canadian Union of Skilled Workers (CUSW) and the Brick and Allied Craft Union (BACU).

OPG also has a collective agreement with the International Association of Machinists and Aerospace Workers.

NOTE: Any company and any of its sub-contractors performing designated trades work on applicable OPG sites, either in accordance with the EPSCA collective agreements or the relevant OPG/Building Trade Union collective agreements, or the Machinists collective agreement, shall be required to conform and adhere to the provisions of those collective agreements.

OPG’s Labour Requirements process ensures contract bidders are aware of these obligations as they prepare their bids.

Labour requirement forms

The process is initiated when a Labour Requirement Form is received by OPG. Decisions are based on the information contained in the Labour Requirement Form as to whether the work should be done under the EPSCA, CUSW, BACU, or Machinists conditions or whether these conditions do not apply. The nature of the work, monetary value of the contract, the hours of work as well as the trades involved and jurisdictional issues are all taken into consideration to make this determination.

There are three possible determinations with respect to labour requirements:

  • Form 1 – collective agreement provisions apply because work is above threshold.
  • Form B – collective agreement provisions do not apply because work is below threshold.
  • No labour requirement – collective agreement provisions do not apply because not trades work or off-property.

Explore all three determinations below.

Different determinations

Learn about the 3 possible determinations that define OPG’s Labour Requirements.

If a labour requirement is determined to be a Form 1, then a tendering package or request for proposal is assembled and sent to the contract administrator responsible for the work.

Through this process, contract bidders are advised via tender/RFP documents of the labour requirements, if any, associated with the work. This includes the labour obligations and associated collective agreements and wage schedule obligations.

It is the contractor’s obligation to determine trades work assignments on a job through the mark-up (PDF) provisions in the collective agreements.

EPSCA collective agreements and wage schedules included in tendering packages are to be used as a guideline and may change after the issuance of tender documents. Please refer to for current EPSCA collective agreements and wage schedules.

See current collective agreements and wage schedules for CUSW and BACU.

In addition, it includes an “Acknowledgement of Labour Requirements (PDF)” that the successful bidder is required to sign as part of the commercial contract.

If the trades work in the Form 1 tendering package requires Boilermakers or Pipe Fitters, the following notice with respect to non-destructive testing (PDF) must be considered.

If the trades work in the tendering package references Operating Engineers, the following notice with respect to crane rentals (PDF) must be considered.

If a labour requirement is determined as a Form B, the contract bidders do not need to perform the work under a collective agreement.

However, the contractor must agree to pay fair wages for the area as outlined in the Labour Requirements Clause – Form B (PDF) notice.

Wages and agreements

Explore the Labour Requirements around wages and collective agreements for OPG Suppliers and Partners.

These matrices identify the wage schedules that apply to each OPG site.

Select the location from the drop-down menu in the left-hand column and the applicable wage schedule for each trade will auto-populate the fields to the right.

OPG Wage Schedule Matrix

EPSCA Wage Schedule Matrix

International Association of Machinists and Aerospace Workers Collective Agreement

International Association of Machinists and Aerospace Workers Wage Schedule

International Association of Machinists and Aerospace Workers Memorandum of Settlement

For more information on the labour requirements for contractors and subcontractors, please email