| Government of Ontario, Canada |
33,754 |
| Royal LePage Real Estate Services |
11,486 |
| The University of Western Ontario |
10,413 |
| Health Canada / Canadian Health Network |
10,401 |
| Agriculture and Agri-Food Canada |
7,030 |
| Canadian Imperial Bank of Commerce |
6,632 |
| Natural Resources Canada |
6,572 |
| City of Ottawa |
6,381 |
| Transport Canada |
5,231 |
| McMaster University |
5,120 |
| Government of Canada - Canadian Food Inspection Agency |
4,735 |
| Human Resources and Social Development Canada |
4,606 |
| Humber College |
4,344 |
| University of Toronto |
3,156 |
| Royal Bank of Canada |
3,104 |
| University of Waterloo |
3,039 |
| National Research Council Canada |
2,983 |
| Fisheries and Oceans Canada |
2,868 |
| Nortel Networks Corporation |
2,713 |
| Department of Justice |
2,629 |
| Indian and Northern Affairs Canada |
2,447 |
| Industry Canada |
2,425 |
| Fanshawe College |
2,341 |
| The Toronto-Dominion Bank |
2,318 |
| Statistics Canada |
2,202 |
| York University |
2,109 |
| Algonquin College |
1,797 |
| Environment Canada |
1,780 |
| Bank of Montreal |
1,737 |
| Carleton University |
1,571 |
| Fasken Martineau Dumoulin |
1,498 |
| Wipro Technologies |
1,445 |
| Sun Life Financial Inc. |
1,438 |
| City of Toronto |
1,424 |
| The Bank of Nova Scotia |
1,277 |
| Government of Canada |
1,218 |
| The City of Kingston |
1,188 |
| McCarthy Tetrault |
1,169 |
| Manulife Financial Corporation |
1,104 |
| Foreign Affairs and International Trade Canada |
1,103 |
| Queen's University |
1,009 |
| University of Windsor |
1,000 |
| Canadian Broadcasting Corporation |
953 |
| Cambrian College |
919 |
| Rogers Communications Inc. |
903 |
| Research In Motion |
897 |
| George Brown College |
895 |
| E.T.M. INDUSTRIES INC. |
859 |
| Sheridan College |
804 |
| Canada Research Chairs |
779 |
| University of Ottawa |
766 |
| Canada Border Services Agency |
748 |
| Lakehead University |
742 |
| CBC / Radio-Canada |
726 |
| University of Guelph |
705 |
| Ontario Power Generation Inc. |
695 |
| Ryerson University |
679 |
| Stikeman Elliott LLP |
662 |
| Canadian International Development Agency |
636 |
| CTV Inc. |
613 |
| Canada Mortgage and Housing Corporation |
607 |
| Miller Thomson LLP |
600 |
| Thames Valley District School Board |
597 |
| RBC Capital Markets |
596 |
| Four Seasons Hotels |
578 |
| Softchoice Corporation |
572 |
| Department of National Defense - Canadian Forces |
568 |
| Cognos Incorporated |
565 |
| Confederation College |
564 |
| Mitel Networks Corporation |
540 |
| Citizenship |
538 |
| Canada Public Service Commission |
511 |
| Assante Corporation |
507 |
| Osler Hoskin |
497 |
| Prudential Sadie Moranis Realty Brokerage |
484 |
| Ontario College of Art and Design |
480 |
| Open Text Corporation |
479 |
| London Health Science Center |
471 |
| Fairmont Hotels |
447 |
| Apotex, Inc. |
443 |
| Office of the Superintendent of Financial Institutions Canada |
436 |
| BDO Dunwoody LLP |
422 |
| BMO Nesbitt Burns |
410 |
| DundeeWealth, Inc. |
410 |
| Extendicare Inc. |
408 |
| Seneca College of Applied Arts & Technology |
406 |
| Rogers Cable Inc. |
388 |
| Hamilton Health Sciences |
380 |
| The Globe and Mail |
377 |
| Loon Film |
369 |
| Canada Post Corporation |
365 |
| Scotia Capital |
363 |
| The Toronto Star |
349 |
| Magna International Inc. |
345 |
| Treasury Board Secretariat |
344 |
| DTZ Barnicke Limited |
340 |
| Agricorp |
336 |
| Canadian Medical Association |
333 |
| Canadian Tire Corporation, Limited |
322 |
| University Health Network |
320 |
| University of Ontario Institute of Technology |
316 |
| Brock University |
310 |
| Canada Revenue Agency |
310 |
| Canadian Institutes of Health Research |
300 |
| IDRC-International Development Research Centre, |
295 |
| The Regional Municipality of Halton |
295 |
| Liquor Control Board of Ontario (LCBO) |
293 |
| RCMP - Royal Canadian Mounted Police |
292 |
| Cassels Brock & Blackwell LLP |
290 |
| Government of Canada Privy Council Office |
280 |
| Defence Construction Canada |
279 |
| Royal Military College of Canada |
278 |
| McMillan LLP |
276 |
| TD Securities,LLC. |
274 |
| Export Development Canada |
271 |
| Wilfrid Laurier University |
267 |
| Canoe.ca |
267 |
| Consulting and Audit Canada |
261 |
| Hudson's Bay Company |
259 |
| MDS Inc. |
257 |
| Sysco Canada |
255 |
| Celestica Inc. |
255 |
| Goodmans LLP |
252 |
| Corus Entertainment |
249 |
| Workplace Safety & Insurance Board |
246 |
| University of Guelph-Humber |
245 |
| Canadian Nuclear Safety Commission |
242 |
| Ipsos-Reid Corporation |
239 |
| Canada School of Public Service |
239 |
| Kuehne |
237 |
| Torys LLP |
236 |
| Thales Canada - Optronics Division |
233 |
| Direct Energy Marketing Limited |
233 |
| Sun Media Corporation |
229 |
| Maple Leaf Foods Inc. |
229 |
| Davies Ward Phillips |
229 |
| Geac Computer Corporation Limited |
229 |
| Mount Sinai Hospital |
226 |
| Hospital for Sick Children |
223 |
| Royal LePage Real Estate Services Ltd. |
220 |
| Canada Council for the Arts |
219 |
| Trent University |
217 |
| Toronto Catholic District School Board |
217 |
| Atomic Energy of Canada Limited |
216 |
| Hydro One Inc. |
213 |
| Social Sciences and Humanities Research Council of Canada |
209 |
| Co-operators General Insurance Company |
208 |
| Sunnybrook Health Sciences Centre |
207 |
| Mohawk College |
205 |
| Bruce Power LP |
205 |
| Aon Inc. |
204 |
| Toyota Canada |
202 |
| Loblaw Companies |
201 |
| The Cadillac Fairview Corporation Limited |
191 |
| Algoma University College |
191 |
| Hatch Ltd. |
189 |
| Biovail Corporation |
186 |
| Laurentian University |
184 |
| Vale Inco |
184 |
| Canadian Press |
182 |
| Purolator Courier Ltd |
181 |
| Speaker of the Legislative Assembly |
176 |
| Delta Hotels Limited |
175 |
| Sears Canada Inc. |
172 |
| Dofasco Inc. |
172 |
| Ottawa Hospital |
172 |
| National Post |
171 |
| Berkshire Investment Group, Inc. |
166 |
| Barrick Gold Corporation |
166 |
| Symcor |
164 |
| Collins Barrow |
162 |
| The City of Hamilton, Ontario Canada |
162 |
| Saint Paul University |
162 |
| London Life Insurance Company |
159 |
| CAMH Centre for Addiction and Mental Health |
159 |
| Union Gas Limited |
157 |
| HAZCO |
155 |
| Canadian Blood Services |
154 |
| Ontario Financing Authority |
151 |
| Lang Michener LLP |
150 |
| Maniotba Blue Cross |
149 |
| NAV CANADA |
149 |
| CTVglobemedia Inc. |
148 |
| Region of Peel |
146 |
| Psion Teklogix Inc. |
146 |
| Finance Canada |
145 |
| National Arts Centre |
144 |
| Infrastructure Ontario |
142 |
| Parmalat Group North America |
141 |
| Aird & Berlis LLP |
138 |
| Look Communications Inc. |
135 |
| Shoppers Drug Mart Corporation |
134 |
| INTRIA Items |
133 |
| Oxford Properties Group Inc. |
132 |
| Elections Canada |
131 |
| The Record |
127 |
| Ontario Teachers' Pension Plan |
125 |
| Corel Corporation |
125 |
| Cinram International Inc. |
125 |
| Stresscrete Group |
125 |
