| SQM Janitorial Services Inc. | 21 | $6,955,350 | 11 | ✓ |
| IBISKA Telecom | 22 | $6,830,806 | 3 | |
| Clean Works INC | 3 | $6,406,828 | 1 | |
| Squeaky Clean LTD | 30 | $6,399,512 | 2 | |
| Herb's Industrial | 8 | $6,334,783 | 1 | |
| Turtle Island Staffing | 109 | $6,278,346 | 34 | |
| Sprucegrove Building Cleaners | 33 | $6,266,436 | 4 | |
| MaxSys Staffing and Consulting | 32 | $6,203,470 | 9 | |
| Silver NANO Magic Clean | 15 | $6,170,814 | 1 | |
| Streak FREE Janitorial (1068722 AB Ltd) | 5 | $5,986,972 | 1 | |
| Allen Maintenance Ltd | 4 | $5,970,235 | 2 | ✓ |
| Cooperative DE Travail Sempi | 7 | $5,934,893 | 1 | |
| SBC Facility Services | 17 | $5,911,939 | 2 | |
| Merit Building Cleaning | 16 | $5,889,220 | 3 | |
| Pacific Building Envelope Maintenance LTD | 3 | $5,618,532 | 1 | |
| ACE Cleaning Company | 9 | $5,594,393 | 1 | |
| Clean Earth Industrial Services | 225 | $5,529,781 | 2 | |
| F.d. Maintenance 2011 Inc. | 9 | $5,220,969 | 2 | |
| Modern Niagara Building Services | 138 | $5,220,763 | 5 | |
| Comercial Building Cleaning, 3388646 Canada Inc. | 2 | $5,219,576 | 1 | |
| ROSE & Brody LTD | 21 | $5,160,295 | 1 | |
| Adirondack Information Management | 31 | $5,008,949 | 7 | |
| 1427730 Alberta Ltd | 15 | $4,990,003 | 1 | |
| Beaudry Maintenance INC | 12 | $4,946,588 | 1 | |
| 9160 8737 Quebec Inc | 2 | $4,946,565 | 1 | |
| Dixie Cleaners & Laundry Services | 10 | $4,900,528 | 1 | |
| Diana’s Janitorial Services | 12 | $4,867,723 | 1 | |
| Diana's Janitorial Services | 12 | $4,867,723 | 0 | |
| Asbex LTD | 5 | $4,834,268 | 1 | ✓ |
| S.i. NET | 5 | $4,827,367 | 1 | |
| NewFound Recruiting | 36 | $4,823,705 | 7 | |
| Dynamic Personnel Consultants | 49 | $4,802,272 | 13 | |
| Service D'entretien Lagoa | 18 | $4,800,859 | 3 | |
| Les Entreprises Pierre Picard Inc | 9 | $4,793,125 | 1 | |
| Conciergerie J.l. Inc. | 19 | $4,785,070 | 2 | |
| Commissionaires (kingston) | 62 | $4,701,537 | 1 | |
| A-1 Sanitation | 92 | $4,686,931 | 1 | ✓ |
| Service D'entretien Lagoa / 9034-3476 Québec Inc. | 6 | $4,673,272 | 2 | |
| Valcom Consulting Group | 16 | $4,668,038 | 1 | |
| Eastern REAL Estate Co., Ltd. | 5 | $4,663,925 | 1 | |
| GOOD House Keeping | 10 | $4,585,405 | 1 | |
| C & K Services LTD | 19 | $4,568,397 | 2 | |
| Ontario Clean Water Agency | 17 | $4,557,985 | 3 | |
| M.a. Independent Building | 11 | $4,518,678 | 1 | |
| Prime Building Maintenance LTD | 8 | $4,464,932 | 1 | |
| Climate Works Heating AND Cooling | 2 | $4,309,876 | 1 | ✓ |
| Contract Community | 11 | $4,284,401 | 3 | |
| Procom Consulting Group Ltd. | 2 | $4,267,897 | 2 | |
| CSI Electrical AND Maintenance LTD | 9 | $4,260,552 | 1 | |
| GM Developpement Inc. | 2 | $4,204,485 | 1 | |