Company lists · Data refreshed September 2026
Top 25 Healthcare worker unions worldwide
RevenueBase identified 302 healthcare worker unions worldwide as of September 2026 and tracks 16,611 professional contacts across them, including 4,851 with verified work emails and 0 with mobile numbers. The United States is the largest market and New York the largest hub.
This list covers healthcare worker unions worldwide, 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. Country and city lists for healthcare worker unions follow the table.
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 worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,406 contacts → | ||||
Strong evidence “We are the Service Employees International Union, an organization of 2-million members united by the belief in the dignity and worth of workers and the services they provide and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,147 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,052 contacts → | ||||
Partial evidence “The Teamsters are one of North America’s largest, most diverse unions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 983 contacts → | ||||
Partial evidence “AFSCME is the nation’s largest and fastest growing public services employees union.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 829 contacts → | ||||
Partial evidence “The mission of 1199SEIU is to advocate for quality healthcare, good jobs and social justice for all.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 610 contacts → | ||||
Strong evidence “32BJ SEIU is the largest property service workers union in the country, representing more than office cleaners, security officers, doormen, porters, maintenance workers, bus…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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. | |||||
| 8 | 595 contacts → | ||||
Partial evidence “CWA represents workers in both private and public sectors.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 577 contacts → | ||||
Strong evidence “The AFT is a union of professionals that champions fairness; democracy; economic opportunity; and high-quality public education, healthcare and public services for our students…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 466 contacts → | ||||
Partial evidence “The American Federation of Government Employees (AFGE) is the largest federal union representing federal government employees.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 420 contacts → | ||||
Partial evidence “The AFL-CIO represents people who work.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 390 contacts → | ||||
Partial evidence “With nearly members in total, the United Federation of Teachers is a powerful advocate for public education and working families in New York City.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 307 contacts → | ||||
Strong evidence “Service Employees International Union-United Healthcare Workers West (SEIU-UHW) is one of the largest unions of hospital workers in the western United States, with more than…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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. | |||||
| 15 | 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. | |||||
| 16 | 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. | |||||
| 17 | 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. | |||||
| 18 | 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. | |||||
| 19 | 198 contacts → | ||||
Partial evidence “SEIU Local 721 is a dynamic, fast-growing organization recognized as one of the largest and strongest unions of publicly-funded employees in the nation.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 193 contacts → | ||||
Partial evidence “SEIU 775 Benefits Group partners with workers, employers and industry stakeholders to collectively solve challenges facing the home care workforce through innovation, creativity…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 163 contacts → | ||||
Strong evidence “SEIU Local 2015 is the largest union in California, representing more than half a million long-term care workers (home care, skilled nursing facility, and assisted living center…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 148 contacts → | ||||
Indirect evidence “Founded in 1903, the California Nurses Association/National Nurses Organizing Committee/AFL-CIO is a premiere organization of registered nurses and one of the nation’s fastest…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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. | |||||
| 24 | 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. | |||||
| 25 | 121 contacts → | ||||
Partial evidence “National Nurses United, with more than members nationwide, is the largest union and professional organization of direct-care registered nurses in the United States and a strong…” 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 302 healthcare worker unions worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,851 reachable decision-makers.
Free signup · no credit card
Healthcare worker unions worldwide at a glance
As of Sep 16, 2026Companies by employee count
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.
- Coverage
- 2 countries, largest first: the United States, Canada. Country and city lists for healthcare worker unions are linked below.
- What qualifies
- Companies worldwide 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.
- 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, 4,851 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.
Healthcare worker unions by location
2 lists · largest firstEvery Healthcare worker unions list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 worldwide?
RevenueBase identified 302 healthcare worker unions worldwide 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?
SEIU, headquartered in Washington, tops this list with the largest team on record.
Which country has the most healthcare worker unions?
The United States leads with 259 companies, followed by Canada (43). Every healthcare worker unions list by country and city is linked on this page.
Which city has the most healthcare worker unions?
New York leads with 14 headquartered companies, followed by Washington (13) and Los Angeles (9).
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 4,851 verified decision-maker contacts tracked across these 302 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.
Ready to reach these companies? Verified emails and direct dials for all 302 healthcare worker unions worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.
More company lists
Company intelligence · public preview
Top 25 healthcare worker unions worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 302 matching company records for healthcare worker unions worldwide, with 16,611 tracked contacts and 4,851 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 healthcare worker unions worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | SEIUseiu.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,406 contacts → |
“We are the Service Employees International Union, an organization of 2-million members united by the belief in the dignity and worth of workers and the services they provide and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | LIUNAliuna.org HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 1,147 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | International Brotherhood Of Teamstersteamster.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,052 contacts → |
“The Teamsters are one of North America’s largest, most diverse unions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Afscmeafscme.orgHQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 983 contacts → |
“AFSCME is the nation’s largest and fastest growing public services employees union.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  1199seiu United Healthcare Workers East1199seiu.orgHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 829 contacts → |
“The mission of 1199SEIU is to advocate for quality healthcare, good jobs and social justice for all.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 32bj Seiuseiu32bj.org HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 610 contacts → |
“32BJ SEIU is the largest property service workers union in the country, representing more than office cleaners, security officers, doormen, porters, maintenance workers, bus…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Ottawa, ON, CanadaReported employees: 501-1,000 | Ottawa, ON, Canada | 501-1,000 | Exact match | 596 contacts → |
“The Canadian Union of Public Employees is Canada’s largest union.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Communications Workers Of Americacwa-union.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 595 contacts → |
“CWA represents workers in both private and public sectors.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  AFTaft.orgHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 577 contacts → |
“The AFT is a union of professionals that champions fairness; democracy; economic opportunity; and high-quality public education, healthcare and public services for our students…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  AFGEafge.orgHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 466 contacts → |
“The American Federation of Government Employees (AFGE) is the largest federal union representing federal government employees.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Afl-Cioaflcio.orgHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 420 contacts → |
“The AFL-CIO represents people who work.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 390 contacts → |
“With nearly members in total, the United Federation of Teachers is a powerful advocate for public education and working families in New York City.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Seiu UHWseiu-uhw.org HQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 307 contacts → |
“Service Employees International Union-United Healthcare Workers West (SEIU-UHW) is one of the largest unions of hospital workers in the western United States, with more than…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | CLACclac.ca HQ: Cambridge, ON, CanadaReported employees: 201-500 | Cambridge, ON, Canada | 201-500 | Exact match | 297 contacts → |
“CLAC is an independent Canadian labour union that applies social principles of justice, respect, and dignity to the workplace community.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Iatse Local 873iatse873.com HQ: Toronto, CanadaReported employees: 501-1,000 | Toronto, Canada | 501-1,000 | Exact match | 274 contacts → |
“The International Alliance of Theatrical Stage Employees Local 873” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ontario Nurses' Associationona.org HQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 266 contacts → |
“Our vision is empowered members taking collective action for safe, equitable workplaces and high-quality health care for all Ontarians.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Centrale DES Syndicats DU Québeclacsq.org HQ: Québec, QC, CanadaReported employees: 201-500 | Québec, QC, Canada | 201-500 | Exact match | 228 contacts → |
“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…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Unifor Nationalunifor.org HQ: Toronto, ON, CanadaReported employees: 10001+ | Toronto, ON, Canada | 10001+ | Exact match | 225 contacts → |
“Unifor is a Canadian union with members in every sector across the country.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Seiu Local 721seiu721.org HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 198 contacts → |
“SEIU Local 721 is a dynamic, fast-growing organization recognized as one of the largest and strongest unions of publicly-funded employees in the nation.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Seiu 775 Benefits Groupmyseiubenefits.orgHQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 193 contacts → |
“SEIU 775 Benefits Group partners with workers, employers and industry stakeholders to collectively solve challenges facing the home care workforce through innovation, creativity…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Seiu Local 2015seiu2015.org HQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 163 contacts → |
“SEIU Local 2015 is the largest union in California, representing more than half a million long-term care workers (home care, skilled nursing facility, and assisted living center…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | California Nurses Associationcalnurses.org HQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 148 contacts → |
“Founded in 1903, the California Nurses Association/National Nurses Organizing Committee/AFL-CIO is a premiere organization of registered nurses and one of the nation’s fastest…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Edmonton, AB, CanadaReported employees: 51-200 | Edmonton, AB, Canada | 51-200 | Exact match | 130 contacts → |
“The Alberta Union of Provincial Employees is Alberta's largest union, representing over Albertans who work in government, health care, education, boards and agencies…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Hospital Employees' Unionheu.org HQ: Burnaby, BC, CanadaReported employees: 201-500 | Burnaby, BC, Canada | 201-500 | Exact match | 130 contacts → |
“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.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | CNA Nnoc NNUnationalnursesunited.org HQ: Silver Spring, MD, United StatesReported employees: 51-200 | Silver Spring, MD, United States | 51-200 | Exact match | 121 contacts → |
“National Nurses United, with more than members nationwide, is the largest union and professional organization of direct-care registered nurses in the United States and a strong…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 302 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Healthcare worker unions: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
298 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Healthcare worker unions by location
2 lists · largest firstEvery Healthcare worker unions list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for healthcare worker unions?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many healthcare worker unions did RevenueBase find worldwide?
The saved snapshot records 302 matching company records, 16,611 tracked contacts and 4,851 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 healthcare worker unions worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/healthcare-worker-unions.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 healthcare worker unions worldwide
RevenueBase records 302 matching company records for healthcare worker unions worldwide, with 16,611 tracked contacts and 4,851 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 healthcare worker unions worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | SEIUseiu.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,406 contacts → |
“We are the Service Employees International Union, an organization of 2-million members united by the belief in the dignity and worth of workers and the services they provide and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | LIUNAliuna.org HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 1,147 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | International Brotherhood Of Teamstersteamster.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 1,052 contacts → |
“The Teamsters are one of North America’s largest, most diverse unions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Afscmeafscme.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 983 contacts → |
“AFSCME is the nation’s largest and fastest growing public services employees union.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 1199seiu United Healthcare Workers East1199seiu.org HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 829 contacts → |
“The mission of 1199SEIU is to advocate for quality healthcare, good jobs and social justice for all.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 32bj Seiuseiu32bj.org HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 610 contacts → |
“32BJ SEIU is the largest property service workers union in the country, representing more than office cleaners, security officers, doormen, porters, maintenance workers, bus…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Ottawa, ON, CanadaReported employees: 501-1,000 | Ottawa, ON, Canada | 501-1,000 | Exact match | 596 contacts → |
“The Canadian Union of Public Employees is Canada’s largest union.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Communications Workers Of Americacwa-union.org HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 595 contacts → |
“CWA represents workers in both private and public sectors.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | AFTaft.org HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 577 contacts → |
“The AFT is a union of professionals that champions fairness; democracy; economic opportunity; and high-quality public education, healthcare and public services for our students…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | AFGEafge.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 466 contacts → |
“The American Federation of Government Employees (AFGE) is the largest federal union representing federal government employees.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Afl-Cioaflcio.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 420 contacts → |
“The AFL-CIO represents people who work.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 390 contacts → |
“With nearly members in total, the United Federation of Teachers is a powerful advocate for public education and working families in New York City.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Seiu UHWseiu-uhw.org HQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 307 contacts → |
“Service Employees International Union-United Healthcare Workers West (SEIU-UHW) is one of the largest unions of hospital workers in the western United States, with more than…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | CLACclac.ca HQ: Cambridge, ON, CanadaReported employees: 201-500 | Cambridge, ON, Canada | 201-500 | Exact match | 297 contacts → |
“CLAC is an independent Canadian labour union that applies social principles of justice, respect, and dignity to the workplace community.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Iatse Local 873iatse873.com HQ: Toronto, CanadaReported employees: 501-1,000 | Toronto, Canada | 501-1,000 | Exact match | 274 contacts → |
“The International Alliance of Theatrical Stage Employees Local 873” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ontario Nurses' Associationona.org HQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 266 contacts → |
“Our vision is empowered members taking collective action for safe, equitable workplaces and high-quality health care for all Ontarians.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Centrale DES Syndicats DU Québeclacsq.org HQ: Québec, QC, CanadaReported employees: 201-500 | Québec, QC, Canada | 201-500 | Exact match | 228 contacts → |
“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…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Unifor Nationalunifor.org HQ: Toronto, ON, CanadaReported employees: 10001+ | Toronto, ON, Canada | 10001+ | Exact match | 225 contacts → |
“Unifor is a Canadian union with members in every sector across the country.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Seiu Local 721seiu721.org HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 198 contacts → |
“SEIU Local 721 is a dynamic, fast-growing organization recognized as one of the largest and strongest unions of publicly-funded employees in the nation.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Seiu 775 Benefits Groupmyseiubenefits.org HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 193 contacts → |
“SEIU 775 Benefits Group partners with workers, employers and industry stakeholders to collectively solve challenges facing the home care workforce through innovation, creativity…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Seiu Local 2015seiu2015.org HQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 163 contacts → |
“SEIU Local 2015 is the largest union in California, representing more than half a million long-term care workers (home care, skilled nursing facility, and assisted living center…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | California Nurses Associationcalnurses.org HQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 148 contacts → |
“Founded in 1903, the California Nurses Association/National Nurses Organizing Committee/AFL-CIO is a premiere organization of registered nurses and one of the nation’s fastest…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Edmonton, AB, CanadaReported employees: 51-200 | Edmonton, AB, Canada | 51-200 | Exact match | 130 contacts → |
“The Alberta Union of Provincial Employees is Alberta's largest union, representing over Albertans who work in government, health care, education, boards and agencies…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Hospital Employees' Unionheu.org HQ: Burnaby, BC, CanadaReported employees: 201-500 | Burnaby, BC, Canada | 201-500 | Exact match | 130 contacts → |
“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.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | CNA Nnoc NNUnationalnursesunited.org HQ: Silver Spring, MD, United StatesReported employees: 51-200 | Silver Spring, MD, United States | 51-200 | Exact match | 121 contacts → |
“National Nurses United, with more than members nationwide, is the largest union and professional organization of direct-care registered nurses in the United States and a strong…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 302 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Healthcare worker unions: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
298 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Healthcare worker unions by location
2 lists · largest firstEvery Healthcare worker unions list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for healthcare worker unions?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many healthcare worker unions did RevenueBase find worldwide?
The saved snapshot records 302 matching company records, 16,611 tracked contacts and 4,851 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 healthcare worker unions worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/healthcare-worker-unions.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗