Company lists · Data refreshed November 2026

Top 25 Union organizing firms worldwide

RevenueBase identified 285 company matches for union organizing firms worldwide as of November 2026 and tracks 5,808 professional contacts across them, including 1,252 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for union organizing firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for union organizing firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
285Companies
5,808Contacts tracked
1,252Verified emails
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The 25 largest union organizing firms worldwide

Ranked by team size
Top 25 of 285 company matches for union organizing firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202610001+1,204 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchUnited KingdomHQ recorded Nov 6, 20261,001-5,0001,142 contacts →

Exact match

“Unite is Britain's biggest union with 1.5 million members in every type of workplace Unite is the union for the 21st century.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWashington, TX, United StatesHQ recorded Nov 6, 2026201-500381 contacts →

Exact match

“Working America unites working people who don’t have a union on the job.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMile End, CanadaHQ recorded Nov 6, 2026501-1,000263 contacts →

Exact match

“Our union is workers across the country from more than 45 industries and all walks of life, standing together to make a difference.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026201-500203 contacts →

Exact match

“The Solidarity Center stands with workers everywhere fighting for fair wages, safe workplaces and fundamental freedoms – when workers have the knowledge and support to advocate…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 202651-200104 contacts →

Exact match

“Conhecer os seus direitos trabalhistas é a melhor maneira de identificar quando forem desrespeitados.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202611-5094 contacts →

Exact match

“Members of UNITE HERE Local 11 join together to fight for improved living standards and working conditions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchConcord, CA, United StatesHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“Our organization has a long history and rich tradition of partnering with the labor community through national and local leaders, advocating for key issues and campaigns, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5068 contacts →

Exact match

“At Jobs With Justice, we are leading the fight for workers’ rights and an economy that benefits everyone.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBrussels, BelgiumHQ recorded Nov 6, 202611-5058 contacts →

Exact match

“Wij zijn Federgon, het netwerk voor werk.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchRoseville, CA, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“UFCW 8-Golden State is dedicated to maintaining, improving and enforcing collective bargaining agreements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHerning, DenmarkHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“HK MidtVest is your local union in the midwestern part of Jutland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPortland, OR, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Oregon AFSCME Council 75 represents over workers statewide in both public and private sector and is one of the fastest growing unions in Oregon.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWashington, PA, United StatesHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“O'Donoghue & O'Donoghue LLP is one of the largest and oldest union-side law firms in the United States, with offices in Washington, D.C, Philadelphia, Pennsylvania, and Annapolis…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAnjou, QC, CanadaHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Workers Defense Project (WDP) is a membership-based organization that works to empower low-wage workers to achieve fair employment through education, direct services, organizing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMonterrey, MexicoHQ recorded Nov 6, 2026201-50034 contacts →

Exact match

“Somos una organización sindical que tiene como objetivo el estudio, el mejoramiento y defensa de los derechos de los trabajadores afiliados y sus familias, ofrecemos servicios…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBogota, ColombiaHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“Somos una organización sindical pro-activa, democrática y participativa, mediante la cual, estamos transformando la cultura laboral, formando trabajadores, que se desempeñan como…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLuxembourgHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Un syndicat pour tous!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Our group of talented lawyers and highly-skilled staff comprise the largest union-side labor law firm in the Pacific Northwest, with roots dating back to the region's labor…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWaukegan, IL, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“We envision thriving, just, and equitable workplaces where empowered workers are paid living wages and work in safe environments with career advancement opportunities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchPorto Alegre, BrazilHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“A excelência na defesa dos direitos dos trabalhadores.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWilmington, MA, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“East Coast Office Installations, LLC is a full-service unionized furniture installation company with more than 30 years experience in the office installation industry, serving the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchUnited StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Organized Power In Numbers works at the intersection of worker power and modern digital and data-driven organizing in multiple states in the South and Southwest to help our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 285 union organizing firms worldwide

See the full list, filter by size, metro and specialty, and access 1,252 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Union organizing firms worldwide at a glance

As of Nov 6, 2026
21.6%Verified-email coverage
20.4Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
140
11-50
80
51-200
25
201-500
11
501-1,000
8
1,001-5,000
5
5,001-10,000
4
10001+
6

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for union organizing firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “union organizing firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,252 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Union organizing firms by location

1 lists · largest first

Every Union organizing firms 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “union organizing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many union organizing firms are there worldwide?

RevenueBase identified 285 company matches for union organizing firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

LIUNA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most union organizing firms?

The United States leads with 102 companies. Every union organizing firms list by country and city is linked on this page.

Which city has the most union organizing firms?

Sao Paulo leads with 5 company records, followed by Chicago (4) and New York (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,252 professional contacts with verified work emails tracked across these 285 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, 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.