60th Anniversary!
The association began in 1931 under the name of Ottawa Master Plumbers’ Association.
On May 6th, 1966, association was incorporated under the name the Mechanical Contractors Association of Ottawa
In November 1967, Sheet Metal Contractors of Ottawa joined MCA Ottawa.
Our Mission
MCA Ottawa’s mission is to bridge management and labour. We aim to ensure fair negotiations, foster positive union relationships, and support the mechanical trades. We are dedicated to creating a stable and prosperous environment for our members.
Featured News
Early Bird Sponsorship – MCA Ottawa 2026 Golf Tournament
Early Bird Sponsorship OPEN! Early Bird Sponsorship Opportunities available below! Deadline to register is Tuesday, March 31st. Please send the file to alexa@mcaottawa.com. Sponsorships will be confirmed on a first…
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Remembering Denis Séguin
Remembering Denis Séguin It is with great sadness that we announce the passing of Mr. Denis Séguin on January 8, 2026, at the age of 69. Denis Séguin joined the…
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Merry Christmas and Happy New Years from MCA Ottawa
Holiday Office Hours December 22nd – partial hours December 23rd – partial hours December 24th, 25th, 26th – CLOSED December 29th – partial hours December 30th – partial hours December…
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