Company lists · Data refreshed September 2026
Top 25 Healthcare worker unions based in Canada
RevenueBase identified 43 healthcare worker unions headquartered in Canada as of September 2026 and tracks 2,857 professional contacts across them, including 1,408 with verified work emails. Toronto is the largest hub.
This list covers healthcare worker unions headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest healthcare worker unions based in Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 596 contacts → | ||||
Partial evidence “The Canadian Union of Public Employees is Canada’s largest union.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 297 contacts → | ||||
Strong evidence “CLAC is an independent Canadian labour union that applies social principles of justice, respect, and dignity to the workplace community.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 274 contacts → | ||||
Indirect evidence “The International Alliance of Theatrical Stage Employees Local 873” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 266 contacts → | ||||
Partial evidence “Our vision is empowered members taking collective action for safe, equitable workplaces and high-quality health care for all Ontarians.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 228 contacts → | ||||
Indirect evidence “La CSQ regroupe du personnel enseignant, professionnel et de soutien des commissions scolaires, des cégeps et des universités, des intervenantes en services de garde, des…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 225 contacts → | ||||
Partial evidence “Unifor is a Canadian union with members in every sector across the country.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 130 contacts → | ||||
Strong evidence “The Alberta Union of Provincial Employees is Alberta's largest union, representing over Albertans who work in government, health care, education, boards and agencies…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 130 contacts → | ||||
Strong evidence “The Hospital Employees' Union is the oldest health care union in British Columbia – representing more than members working for public, non-profit and private employers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 118 contacts → | ||||
Strong evidence “The Healthcare Union representing more than frontline workers in Canada.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 106 contacts → | ||||
Indirect evidence “La FIQ est une organisation syndicale qui compte plus de 80 membres infirmières, infirmières auxiliaires, inhalothérapeutes et perfusionnistes cliniques œuvrant dans les…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 78 contacts → | ||||
Indirect evidence “HSA represents more than health science and community service professionals at over 250 hospitals and agencies in acute care, long-term care and community health, including…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 64 contacts → | ||||
Partial evidence “The Health Sciences Association of Alberta (HSAA) is a union of Alberta health-care professionals members strong!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 56 contacts → | ||||
Indirect evidence “UFCW 1518 serves more than members in the community health, retail food and industrial sectors.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 47 contacts → | ||||
Partial evidence “CUPE is Ontario’s community union, with members providing the quality public services we all rely on, in every part of the province, every day.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 38 contacts → | ||||
Strong evidence “United Nurses of Alberta is the union for more than Registered Nurses, Registered Psychiatric Nurses and allied workers in Alberta.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 29 contacts → | ||||
Indirect evidence “International Brotherhood of Boilermakers Lodge 146 is a company based out of 15220 114 Ave NW, Edmonton, Alberta, Canada.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Partial evidence “The mandate of SEIU-West is to improve the lives of working people and their families, and lead the way to a more just and humane society.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 12 contacts → | ||||
Indirect evidence “La Fédération Indépendante des Syndicats Autonomes (FISA) s’engage à défendre les droits des travailleurs en offrant une représentation professionnelle et des services…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Indirect evidence “The CFNU is Canada’s largest nurses’ organization, representing Canada’s frontline nurses in every sector of health care – from home care, LTC, community and acute care, including…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Partial evidence “UFCW Local 832 represents Manitoban workers in cannabis, retail, food production, warehousing, hospitality, security and support sectors.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Partial evidence “Workers United represents workers across Canada, and more across the United States.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “We are a membership-driven organization with affiliation to the Canadian Labour Congress (CLC) and the Ontario Federation of Labour (OFL) giving us strength in millions, allowing…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Strong evidence “Civic Service Union 52 (CSU 52) represents over technical, professional, administrative and clerical workers within the City of Edmonton, Edmonton Public Library, TELUS World of…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Indirect evidence “Feel the Power.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “L'UES 800 défend activement les droits et conditions de travail de plus de 20 membres en promouvant la solidarité, l’équité et le respect.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: healthcare worker unions. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names healthcare worker unions.
- Partial evidence
- Its own public description names part of healthcare worker unions, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name healthcare worker unions. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 43 healthcare worker unions based in Canada
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Healthcare worker unions based in Canada at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 43 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among healthcare worker unions, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Canada whose own description of what they do matches “healthcare worker unions”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names healthcare worker unions), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among healthcare worker unions, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,408 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names healthcare worker unions, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many healthcare worker unions are there based in Canada?
RevenueBase identified 43 healthcare worker unions headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Canadian Union Of Public Employees, headquartered in Ottawa, tops this list with the largest team on record.
Which city has the most healthcare worker unions?
Toronto leads with 6 headquartered companies, followed by Edmonton (5) and Montreal (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,408 verified decision-maker contacts tracked across these 43 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.