| Attività | Descrizione – Sito |
| Architetti | Ontario
Association of Architects |
| Architetti | The Ontario
Association of Landscape Architects |
| Avvocati | The Law Society of
Upper Canada |
| Commercialisti | Chartered
Professional Accountants of Ontario |
| Costruttori di case | The Ontario Home
Builders’ Association (OHBA) |
| Decoratori di interni | Directory
of Occupational Profiles |
| Decoratori di interni | Interior
Designers of Canada |
| Decoratori di interni | National
Council for Interior Design Qualification |
| Decoratori di interni | News,
jobs and resources for Canadian Graphic Designers |
| Decoratori di interni | The Association of
Registered Interior Designers of Ontario |
| Decoratori di interni | The Canadian
Decorators’ Association |
| Elettricisti | Electrical
Contractors Association of Ontario |
| Idraulici | Ontario
Immigration- Plumbers |
| Idraulici | Ontario
Plumbing Inspectors Association |
| Idraulici | United
Association of Journeymen and Apprentices of the Plumbing and Pipe
Fitting Industry of the United States and Canada. |
| Infermieri | Ontario Nurses’
Association |
| Ingegneri | Professional
Engineers Ontario |
| Insegnanti | Ontario College
of Teachers |
| Lavoratori sociali | Ontario
Association of Social Workers |
| Medici | College of
Physicians and Surgeons of Ontario |
