| Whitefish River First Nation | Other Public Sector Employers | 2025 | 3 | $109,045 |
| Whitesand First Nation | Other Public Sector Employers | 2025 | 1 | $107,512 |
| Wiigwas Elder and Senior Care | Other Public Sector Employers | 2025 | 17 | $125,883 |
| Wikwemikong Nursing Home | Other Public Sector Employers | 2025 | 3 | $129,573 |
| Wikwemikong Nursing Home Limited | Other Public Sector Employers | 2012 | 1 | $100,432 |
| Wikwemikong Tribal Police Service | Municipalities & Services | 2025 | 8 | $150,673 |
| WIL Counselling & Training for Employment | Other Public Sector Employers | 2013 | 1 | $105,000 |
| WIL Counselling and Training for Employment | Other Public Sector Employers | 2023 | 1 | $106,058 |
| Wildlife Preservation Canada | Other Public Sector Employers | 2025 | 1 | $117,702 |
| Wilfrid Laurier University | Universities | 2025 | 862 | $157,973 |
| Willett Applied Behaviour Analysis Professional Corporation (O/A Behaviour Learning Innovations) | Other Public Sector Employers | 2025 | 1 | $130,183 |
| William Osler Health System | Hospitals & Boards of Public Health | 2025 | 2,220 | $126,013 |
| William W Creighton Youth Services | Other Public Sector Employers | 2025 | 3 | $124,643 |
| Willowbridge Community Services Inc. | Other Public Sector Employers | 2025 | 2 | $142,369 |
| Wilson Memorial General Hosp. | Hospitals & Boards of Public Health | 2004 | 1 | $106,670 |
| Wilson Memorial General Hospital | Hospitals & Boards of Public Health | 2015 | 7 | $115,982 |
| Winchester District Memorial Hosp. | Hospitals & Boards of Public Health | 1998 | 1 | $120,000 |
| Winchester District Memorial Hospital | Hospitals & Boards of Public Health | 2025 | 61 | $122,440 |
| Winchester District Memorial Hospital and Dundas Manor Long-Term Care Home | Hospitals & Boards of Public Health | 2014 | 3 | $165,909 |
| Windigo First Nations Council | Other Public Sector Employers | 2020 | 1 | $111,373 |
| Windmill Microlending | Other Public Sector Employers | 2025 | 6 | $161,249 |
| Windsor Board of Education | School Boards | 1997 | 6 | $119,762 |
| Windsor Essex Community Health Centre | Other Public Sector Employers | 2025 | 29 | $172,641 |
| Windsor Essex Community Housing Corporation | Other Public Sector Employers | 2016 | 1 | $136,679 |
| Windsor Family Health Team | Other Public Sector Employers | 2023 | 10 | $238,284 |
| Windsor Public Library | Other Public Sector Employers | 2002 | 1 | $128,171 |
| Windsor Public Library Board | Other Public Sector Employers | 2024 | 3 | $119,364 |
| Windsor RCSSB | School Boards | 1997 | 6 | $116,034 |
| Windsor Regional Hospital | Hospitals & Boards of Public Health | 2025 | 1,285 | $122,913 |
| Windsor Women Working With Immigrant Women | Other Public Sector Employers | 2023 | 1 | $100,957 |
| Windsor-Essex Catholic District School Board | School Boards | 2025 | 1,083 | $121,868 |
| Windsor-Essex CCAC | Other Public Sector Employers | 1998 | 1 | $108,509 |
| Windsor-Essex Children's Aid Soc. | Other Public Sector Employers | 1999 | 1 | $107,543 |
| Windsor-Essex Children's Aid Society | Other Public Sector Employers | 2025 | 75 | $120,312 |
| Windsor-Essex Comm. Care Access Ctr. | Other Public Sector Employers | 1997 | 1 | $104,768 |
| Windsor-Essex County Development Commission | Other Public Sector Employers | 2007 | 1 | $137,847 |
| Windsor-Essex County Health Unit | Hospitals & Boards of Public Health | 2025 | 31 | $135,988 |
| Windsor-Essex Economic Development Corporation | Other Public Sector Employers | 2019 | 2 | $164,107 |
| Windsor-Essex Health Unit | Hospitals & Boards of Public Health | 2003 | 2 | $165,065 |
| WindsorEssex Development Commission | Municipalities & Services | 2008 | 1 | $125,815 |
| WindsorEssex Development Corporation | Municipalities & Services | 2009 | 1 | $135,180 |
| WindsorEssex Economic Development Corporation | Other Public Sector Employers | 2011 | 2 | $133,500 |
| Wine Council of Ontario | Other Public Sector Employers | 2015 | 1 | $184,600 |
| Wine Marketing Association of Ontario | Other Public Sector Employers | 2025 | 1 | $205,150 |
| Wingham and District Hospital | Hospitals & Boards of Public Health | 2025 | 30 | $118,540 |
| Wise Elephant Family Health Team | Other Public Sector Employers | 2018 | 1 | $106,441 |
| Woman Abuse Council of Toronto | Other Public Sector Employers | 2022 | 1 | $103,600 |
| Women and Children's Shelter (Barrie) | Other Public Sector Employers | 2025 | 1 | $120,115 |
| Women in Crisis (Algoma) Inc | Other Public Sector Employers | 2025 | 2 | $114,370 |
| Women's Centre (Grey and Bruce) Inc | Other Public Sector Employers | 2025 | 1 | $129,293 |
| Women's Centre of York Region | Other Public Sector Employers | 2025 | 1 | $127,363 |
| Women's Christian Assoc. | Other Public Sector Employers | 2005 | 1 | $127,698 |
| Women's Christian Association | Other Public Sector Employers | 2004 | 1 | $123,139 |
| Women's Christian Association (McCormick Home) | Other Public Sector Employers | 2012 | 2 | $130,176 |
| Women's Christian Association of London (McCormick Home) | Other Public Sector Employers | 2016 | 2 | $133,637 |
| Women's Christian Association-Parkwood Hosp. | Hospitals & Boards of Public Health | 1996 | 1 | $147,681 |
| Women's College Hospital | Hospitals & Boards of Public Health | 2025 | 271 | $128,900 |
| Women's Community House | Other Public Sector Employers | 2016 | 1 | $112,220 |
| Women's Crisis Services of Waterloo Region | Other Public Sector Employers | 2025 | 2 | $134,702 |
| Women's Enterprise Skills Training of Windsor Inc | Other Public Sector Employers | 2025 | 2 | $119,174 |
| Women's Habitat of Etobicoke | Other Public Sector Employers | 2025 | 1 | $112,466 |
| Women's Health in Women's Hands Community Health Centre | Other Public Sector Employers | 2016 | 2 | $156,673 |
| Women's Health in Womens Hands | Other Public Sector Employers | 2025 | 6 | $150,436 |
| Women's Hlth in Wmn's Hands CHC | Other Public Sector Employers | 1998 | 1 | $111,965 |
| Women's Hlth in Women's Hands Comm. Ctr | Other Public Sector Employers | 2004 | 2 | $111,439 |
| Women's Hostels Incorporated | Other Public Sector Employers | 2025 | 2 | $111,383 |
| Women's House Serving Bruce and Grey | Other Public Sector Employers | 2025 | 1 | $211,070 |
| Women's Interval Home of Sarnia Lambton Inc | Other Public Sector Employers | 2025 | 1 | $100,331 |
| Women's Place of South Niagara Inc | Other Public Sector Employers | 2025 | 1 | $137,363 |
| Women's Place St Catharines and District Inc | Other Public Sector Employers | 2025 | 3 | $114,221 |
| Women's Resources of Kawartha Lakes | Other Public Sector Employers | 2025 | 1 | $102,255 |
| Women's Rural Resource Centre of Strathroy and Area | Other Public Sector Employers | 2023 | 1 | $103,444 |
| Women’s Multicultural Resource and Counselling Centre of Durham | Other Public Sector Employers | 2022 | 1 | $103,952 |
| Women’s Shelter Second Stage Housing and Counselling Services of Huron | Other Public Sector Employers | 2024 | 1 | $105,709 |
| Wood Manufacturing Council (Wmc Cfb) | Other Public Sector Employers | 2022 | 1 | $124,848 |
| Wood Manufacturing Council / Conseil des fabricants de bois | Other Public Sector Employers | 2016 | 1 | $120,769 |
| Woodbine Entertainment Group | Other Public Sector Employers | 2013 | 36 | $183,726 |
| Woodbine Family Health Team | Other Public Sector Employers | 2023 | 1 | $115,852 |
| Woodbridge Medical Centre Family Health Team | Other Public Sector Employers | 2023 | 2 | $137,528 |
| Woodgreen Community Services | Other Public Sector Employers | 2025 | 27 | $162,181 |
| Woodgreen Red Door Family Shelter | Other Public Sector Employers | 2025 | 5 | $122,733 |
| Woodstock and Area Community Health Centre | Other Public Sector Employers | 2016 | 3 | $203,798 |
| Woodstock and District Developmental Services | Other Public Sector Employers | 2025 | 1 | $110,547 |
| Woodstock City Police Department | Other Public Sector Employers | 1998 | 1 | $101,131 |
| Woodstock City Police Dept | Other Public Sector Employers | 1997 | 1 | $113,683 |
| Woodstock Hospital | Hospitals & Boards of Public Health | 2025 | 252 | $120,955 |
| Woodstock Police Service | Municipalities & Services | 2016 | 1 | $112,442 |
| Woodview Children's Centre | Other Public Sector Employers | 2015 | 1 | $114,481 |
| Woodview Mental Health and Autism Services | Other Public Sector Employers | 2025 | 4 | $122,754 |
| Woolwich Community Health Centre | Other Public Sector Employers | 2025 | 16 | $165,098 |
| Woolwich Counselling Centre | Other Public Sector Employers | 2023 | 1 | $102,812 |
| Workers Comp. Appeals Tribunal | Government of Ontario – Ministries | 1996 | 4 | $113,735 |
| Workers Health and Safety Centre | Other Public Sector Employers | 2025 | 38 | $133,566 |
| Workforce Development Board Windsor Essex | Other Public Sector Employers | 2024 | 1 | $113,380 |
| Working for Change | Other Public Sector Employers | 2025 | 1 | $109,463 |
| Working Skills Centre | Other Public Sector Employers | 2022 | 1 | $103,540 |
| Workplace Health & Safety Agency | Crown Agencies | 1997 | 1 | $105,065 |
| Workplace Safety & Ins. App. Trib. | Crown Agencies | 2002 | 4 | $125,052 |
| Workplace Safety and Insurance Appeals Tribunal | Crown Agencies | 2025 | 91 | $150,081 |
| Workplace Safety and Insurance Board | Crown Agencies | 2025 | 2,010 | $126,456 |