I just came across this post http://www.find-mba.com/board/6866 from a user who has left the site. It's useful, but some details will be out of date:

I think its still important to acknowledge that even though some university courses are only going to require 2 years work experience, the average number of years of work experience required by MBA schools in Canada is 2.4 years ranging from no work experience required to 5 years. However, on average, Canadian MBA students have 6.4 years of work experience.

You might find this list useful:

Athabasca University
Applicants with a bachelor degree must have at least 3 years of managerial-level work experience; those with an acceptable professional designation but no degree require at least 5 years of managerial-level work experience. Resume required for application

Brock University
Work experience is not required but is preferred. Resume required for application.

Cape Breton University
A minimum of two years experience in community economic development. Resume required for application.

Carleton University
Resume required for application.

Concordia University
At least two years of meaningful work experience. Resume required for application.

Dalhousie University
At least 3 years. Resume required for application.

First Nations University of Canada
Minimum 3 years work experience. Resume required for application.

HEC Montreal
A minimum of three years of work experience. Resume required for application.

Lakehead University
Resume required for application.

Lansbridge University
Applicants should have at least 1 year of full-time relevant work experience for the MBA program or 5 years of full-time work experience, including 2 years of management level employment, for the eMBA program. Resume required for application.

Laurentian University
Applicants should have at least 2 years of relevant work experience but this requirement may be waived under specific situations. Resume required for application.

Malaspina University-College
No work experience is required. Resume required for application.

McGill University
Applicants must have a minimum of two years of relevant full time work experience after their undergraduate degree. Resume required for application.

McMaster University
Candidates applying for the full-time or part-time options must have a minimum of one year of full-time, continuous managerial, professional or technical work experience. Resume required for application.

Memorial University of Newfoundland
You must complete Employment Experience Information Form. Resume required for application.

Mount Saint Vincent University
A minimum of two years of full-time, relevant work experience. Resume required for application.

Queen's University
A minimum two years of full-time, post-degree, professional experience (excluding internships and/or co-op placements). Resume required for application.

Royal Roads University
Applicants must have at least 5 years of relevant work experience. Resume required for application.

Ryerson University
Ryerson?s MBA:Preference will be given to applicants who have a minimum of two years full-time work experience or equivalent after graduation from undergraduate studies. Resume required for application.

Saint Mary's University
Full-time students should normally have at least two years of relevant post-degree experience. Co-op experience will be given consideration. Resume required for application.

Simon Fraser University
Two years of relevant work experience is the minimum required but the University recommends at least three years. Resume required for application.

University of Alberta
Applicants should possess a minimum of two years, full-time work experience after completion of an undergraduate degree. Resume required for application.

University of British Columbia
2 years of full-time work experience gained after graduation from your bachelor?s degree. Our competitive recommendation is at least 3-5 years of full-time work experience for those applying to the full-time program, and between 5-6 years of full-time work experience for those applying to the part-time program.

University of Calgary
Three years of appropriate employment at increasing levels of responsibility. Resume required for application.

University of Guelph
If the applicant has a 4-year degree then 3 years of industry-related work experience, including managerial responsibilities, are required; otherwise, the applicant will need 5 years of relevant work experience including managerial responsibilities. Resume required for application.

University of Lethbridge
Resume required for application.

University of Manitoba
Three years of professional work experience. Resume required for application.

University of New Brunswick-Fredericton
A minimum of 3 years of relevant work experience is required; preferred experience is that which makes use of your undergraduate degree. Resume required for application.

University of New Brunswick-Saint John
A minimum of 3 years of relevant work experience is required; preferred experience is that which makes use of your undergraduate degree. Resume required for application.

University of Ottawa
2 years of full-time managerial or professional work experience. Resume required for application.

University of Regina
Usually, applicants are required to have a minimum of 2 years of full-time, relevant work experience. Resume required for application.

University of Saskatchewan
Minimum 3 years work experience. Resume required for application.

University of Toronto
Two years of full-time work experience. Resume required for application.

University of Victoria
Resume required for application.

University of Western Ontario
Two years of work experience. Resume required for application.

University of Windsor
No work experience is required. Resume required for application.

Wilfrid Laurier University
Two years of work experience. Resume required for application.

York University
Two years of full-time, relevant work experience. Resume required for application.