Company lists · Data refreshed September 2026
Top 25 Unions worldwide
RevenueBase identified 137 unions worldwide as of September 2026 and tracks 13,995 professional contacts across them, including 1,019 with verified work emails and 0 with mobile numbers. The United States is the largest market and Washington the largest hub.
This list covers 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 19, 2026. Country and city lists for 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 unions worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 9,357 contacts → | ||||
Indirect evidence “The IBEW represents 901,831 active.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,147 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,052 contacts → | ||||
Strong evidence “The Teamsters are one of North America’s largest, most diverse unions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 100 contacts → | ||||
Indirect evidence “We are an organization of more than people who, by joining together, are achieving what we cannot accomplish alone.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 81 contacts → | ||||
Indirect evidence “SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 77 contacts → | ||||
Indirect evidence “Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 52 contacts → | ||||
Indirect evidence “UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 25 contacts → | ||||
Strong evidence “SEIU Local 2.on Brewery, General, and Professional Workers’ Union represents more than workers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 25 contacts → | ||||
Indirect evidence “La FTQ-Construction a le mandat de négocier les conventions collectives applicables dans les sous secteurs d’activités (industriel, commercial et institutionnel, génie civil et…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 23 contacts → | ||||
Strong evidence “The United Mine Workers of America is a diverse union with membership that includes coal miners, manufacturing workers, clean coal technicians, health care workers, corrections…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Indirect evidence “Founded in 1885, the Los Angeles County Federation of Labor, AFL-CIO, the second largest central labor body in the nation, has in recent decades been on the cutting edge of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 contacts → | ||||
Strong evidence “OPEIU Local 8 is a progressive, democratically run union representing over members all over Washington who work in many settings including offices, hospitals, clinics, social…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 15 contacts → | ||||
Indirect evidence “Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 contacts → | ||||
Indirect evidence “Local 527 has had a unique heritage in that it is the product of mergers of two other very fine Labourers’ locals.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 9 contacts → | ||||
Indirect evidence “UFCW Local 27 represents more than members in multiple industries across Delaware, Maryland, Pennsylvania, Virginia and West Virginia.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Indirect evidence “We are 7500 members strong and growing.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 9 contacts → | ||||
Indirect evidence “We love our members here at Local 166 and try to provide each one with the personal and united satisfaction of getting the job done right to fight for your rights.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 contacts → | ||||
Indirect evidence “Workers United represents workers across Canada, and more across the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Strong evidence “The middle class is shrinking rapidly and workers, acting through their unions, are the last best defense to stop the destruction of the middle class.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 19, 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: 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 unions.
- Partial evidence
- Its own public description names part of unions, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name 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 137 unions worldwide
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Unions worldwide at a glance
As of Sep 19, 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 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 unions are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “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 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 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, 1,019 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 19, 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.
Unions by location
2 lists · largest firstEvery 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 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 unions are there worldwide?
RevenueBase identified 137 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?
International Brotherhood Of Electrical Workers Ibew, headquartered in Washington, tops this list with the largest team on record.
Which country has the most unions?
The United States leads with 111 companies, followed by Canada (26). Every unions list by country and city is linked on this page.
Which city has the most unions?
Washington leads with 10 headquartered companies, followed by New York (5) and Chicago (3).
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 1,019 verified decision-maker contacts tracked across these 137 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 137 unions worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 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 137 matching company records for unions worldwide, with 13,995 tracked contacts and 1,019 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 19, 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 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 | HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 9,357 contacts → |
“The IBEW represents 901,831 active.” Recorded description excerpt · September 19, 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Seiu Local 503seiu503.org HQ: Salem, OR, United StatesReported employees: 51-200 | Salem, OR, United States | 51-200 | Exact match | 100 contacts → |
“We are an organization of more than people who, by joining together, are achieving what we cannot accomplish alone.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Seiu Local 1seiu1.org HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 81 contacts → |
“SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Unite Here Local 11unitehere11.org HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 77 contacts → |
“Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ufcw 8-Golden Stateufcw8.org HQ: Roseville, CA, United StatesReported employees: 51-200 | Roseville, CA, United States | 51-200 | Exact match | 52 contacts → |
“UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | International Brotherhood Of Boilermakers Lodge 146boilermakers.ca HQ: Edmonton, AB, CanadaReported employees: 1,001-5,000 | Edmonton, AB, Canada | 1,001-5,000 | Exact match | 29 contacts → |
“International Brotherhood of Boilermakers Lodge 146 is a company based out of 15220 114 Ave NW, Edmonton, Alberta, Canada.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Seiu Local 2seiulocal2.ca HQ: Mississasuga, ON, CanadaReported employees: 11-50 | Mississasuga, ON, Canada | 11-50 | Exact match | 25 contacts → |
“SEIU Local 2.on Brewery, General, and Professional Workers’ Union represents more than workers.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ftq-Constructionftqconstruction.org HQ: Anjou, QC, CanadaReported employees: 11-50 | Anjou, QC, Canada | 11-50 | Exact match | 25 contacts → |
“La FTQ-Construction a le mandat de négocier les conventions collectives applicables dans les sous secteurs d’activités (industriel, commercial et institutionnel, génie civil et…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | United Mine Workers Of Americaumwa.org HQ: Triangle, VA, United StatesReported employees: 51-200 | Triangle, VA, United States | 51-200 | Exact match | 23 contacts → |
“The United Mine Workers of America is a diverse union with membership that includes coal miners, manufacturing workers, clean coal technicians, health care workers, corrections…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | LOS Angeles County Federation Of Labor, Afl-Ciothelafed.org HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 17 contacts → |
“Founded in 1885, the Los Angeles County Federation of Labor, AFL-CIO, the second largest central labor body in the nation, has in recent decades been on the cutting edge of…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Opeiu Local 8opeiu8.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 15 contacts → |
“OPEIU Local 8 is a progressive, democratically run union representing over members all over Washington who work in many settings including offices, hospitals, clinics, social…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Teamsters Local 89teamsters89.com HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 15 contacts → |
“Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ufcw Local 1059ufcw1059.com HQ: Columbus, OH, United StatesReported employees: 11-50 | Columbus, OH, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | HQ: Québec, QC, CanadaReported employees: 11-50 | Québec, QC, Canada | 11-50 | Exact match | 12 contacts → |
“La Fédération Indépendante des Syndicats Autonomes (FISA) s’engage à défendre les droits des travailleurs en offrant une représentation professionnelle et des services…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Liuna Local 527&527aliunalocal527.com HQ: Nepean, ON, CanadaReported employees: 11-50 | Nepean, ON, Canada | 11-50 | Exact match | 11 contacts → |
“Local 527 has had a unique heritage in that it is the product of mergers of two other very fine Labourers’ locals.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ufcw Local 27ufcw27.org HQ: Towson, MD, United StatesReported employees: 11-50 | Towson, MD, United States | 11-50 | Exact match | 9 contacts → |
“UFCW Local 27 represents more than members in multiple industries across Delaware, Maryland, Pennsylvania, Virginia and West Virginia.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Ufcw Local 367ufcw367.org HQ: Tacoma, WA, United StatesReported employees: 11-50 | Tacoma, WA, United States | 11-50 | Exact match | 9 contacts → |
“We are 7500 members strong and growing.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Teamsters Local 166teamsters166.com HQ: Bloomington, CA, United StatesReported employees: 11-50 | Bloomington, CA, United States | 11-50 | Exact match | 9 contacts → |
“We love our members here at Local 166 and try to provide each one with the personal and united satisfaction of getting the job done right to fight for your rights.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Workers United Canada Councilworkersunitedunion.ca HQ: Mississauga, ON, CanadaReported employees: 51-200 | Mississauga, ON, Canada | 51-200 | Exact match | 8 contacts → |
“Workers United represents workers across Canada, and more across the United States.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Linear Contracting INClinearcontracting.com HQ: Staten Island, United StatesReported employees: 11-50 | Staten Island, United States | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 | Ufcw Local 227ufcw227.org HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 8 contacts → |
“The middle class is shrinking rapidly and workers, acting through their unions, are the last best defense to stop the destruction of the middle class.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Cope Ontariocopeontario.ca HQ: Toronto, ON, CanadaReported employees: 11-50 | Toronto, ON, Canada | 11-50 | Exact match | 7 contacts → |
“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…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 137 company matches
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Unions: dataset insights
September 19, 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
136 records in the displayed employee bands.
1 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 19, 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 ↗
Unions by location
2 lists · largest firstEvery 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 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 unions did RevenueBase find worldwide?
The saved snapshot records 137 matching company records, 13,995 tracked contacts and 1,019 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 19, 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
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Cite this list
RevenueBase Data Team. Top 25 unions worldwide. Snapshot: September 19, 2026. https://revenuebase.ai/companies/browse/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 unions worldwide
RevenueBase records 137 matching company records for unions worldwide, with 13,995 tracked contacts and 1,019 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 19, 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 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 | HQ: Washington, DC, United StatesReported employees: 10001+ | Washington, DC, United States | 10001+ | Exact match | 9,357 contacts → |
“The IBEW represents 901,831 active.” Recorded description excerpt · September 19, 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Seiu Local 503seiu503.org HQ: Salem, OR, United StatesReported employees: 51-200 | Salem, OR, United States | 51-200 | Exact match | 100 contacts → |
“We are an organization of more than people who, by joining together, are achieving what we cannot accomplish alone.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Seiu Local 1seiu1.org HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 81 contacts → |
“SEIU Local 1 members are working in 11 cities in six states, and our jobs are some of the highest paying in our industries.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Unite Here Local 11unitehere11.org HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 77 contacts → |
“Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ufcw 8-Golden Stateufcw8.org HQ: Roseville, CA, United StatesReported employees: 51-200 | Roseville, CA, United States | 51-200 | Exact match | 52 contacts → |
“UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | International Brotherhood Of Boilermakers Lodge 146boilermakers.ca HQ: Edmonton, AB, CanadaReported employees: 1,001-5,000 | Edmonton, AB, Canada | 1,001-5,000 | Exact match | 29 contacts → |
“International Brotherhood of Boilermakers Lodge 146 is a company based out of 15220 114 Ave NW, Edmonton, Alberta, Canada.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Seiu Local 2seiulocal2.ca HQ: Mississasuga, ON, CanadaReported employees: 11-50 | Mississasuga, ON, Canada | 11-50 | Exact match | 25 contacts → |
“SEIU Local 2.on Brewery, General, and Professional Workers’ Union represents more than workers.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ftq-Constructionftqconstruction.org HQ: Anjou, QC, CanadaReported employees: 11-50 | Anjou, QC, Canada | 11-50 | Exact match | 25 contacts → |
“La FTQ-Construction a le mandat de négocier les conventions collectives applicables dans les sous secteurs d’activités (industriel, commercial et institutionnel, génie civil et…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | United Mine Workers Of Americaumwa.org HQ: Triangle, VA, United StatesReported employees: 51-200 | Triangle, VA, United States | 51-200 | Exact match | 23 contacts → |
“The United Mine Workers of America is a diverse union with membership that includes coal miners, manufacturing workers, clean coal technicians, health care workers, corrections…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | LOS Angeles County Federation Of Labor, Afl-Ciothelafed.org HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 17 contacts → |
“Founded in 1885, the Los Angeles County Federation of Labor, AFL-CIO, the second largest central labor body in the nation, has in recent decades been on the cutting edge of…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Opeiu Local 8opeiu8.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 15 contacts → |
“OPEIU Local 8 is a progressive, democratically run union representing over members all over Washington who work in many settings including offices, hospitals, clinics, social…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Teamsters Local 89teamsters89.com HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 15 contacts → |
“Teamsters Local 89 is hard-working people joined together to defend and preserve the American Dream for generations to come.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ufcw Local 1059ufcw1059.com HQ: Columbus, OH, United StatesReported employees: 11-50 | Columbus, OH, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | HQ: Québec, QC, CanadaReported employees: 11-50 | Québec, QC, Canada | 11-50 | Exact match | 12 contacts → |
“La Fédération Indépendante des Syndicats Autonomes (FISA) s’engage à défendre les droits des travailleurs en offrant une représentation professionnelle et des services…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Liuna Local 527&527aliunalocal527.com HQ: Nepean, ON, CanadaReported employees: 11-50 | Nepean, ON, Canada | 11-50 | Exact match | 11 contacts → |
“Local 527 has had a unique heritage in that it is the product of mergers of two other very fine Labourers’ locals.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ufcw Local 27ufcw27.org HQ: Towson, MD, United StatesReported employees: 11-50 | Towson, MD, United States | 11-50 | Exact match | 9 contacts → |
“UFCW Local 27 represents more than members in multiple industries across Delaware, Maryland, Pennsylvania, Virginia and West Virginia.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Ufcw Local 367ufcw367.org HQ: Tacoma, WA, United StatesReported employees: 11-50 | Tacoma, WA, United States | 11-50 | Exact match | 9 contacts → |
“We are 7500 members strong and growing.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Teamsters Local 166teamsters166.com HQ: Bloomington, CA, United StatesReported employees: 11-50 | Bloomington, CA, United States | 11-50 | Exact match | 9 contacts → |
“We love our members here at Local 166 and try to provide each one with the personal and united satisfaction of getting the job done right to fight for your rights.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Workers United Canada Councilworkersunitedunion.ca HQ: Mississauga, ON, CanadaReported employees: 51-200 | Mississauga, ON, Canada | 51-200 | Exact match | 8 contacts → |
“Workers United represents workers across Canada, and more across the United States.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Linear Contracting INClinearcontracting.com HQ: Staten Island, United StatesReported employees: 11-50 | Staten Island, United States | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 | Ufcw Local 227ufcw227.org HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 8 contacts → |
“The middle class is shrinking rapidly and workers, acting through their unions, are the last best defense to stop the destruction of the middle class.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Cope Ontariocopeontario.ca HQ: Toronto, ON, CanadaReported employees: 11-50 | Toronto, ON, Canada | 11-50 | Exact match | 7 contacts → |
“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…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 137 company matches
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Unions: dataset insights
September 19, 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
136 records in the displayed employee bands.
1 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 19, 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 ↗
Unions by location
2 lists · largest firstEvery 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 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 unions did RevenueBase find worldwide?
The saved snapshot records 137 matching company records, 13,995 tracked contacts and 1,019 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 19, 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
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Cite this list
RevenueBase Data Team. Top 25 unions worldwide. Snapshot: September 19, 2026. https://revenuebase.ai/companies/browse/unions.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗