Company lists · Data refreshed September 2026

Top 25 Union labor law firms worldwide

Name: Union labor law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 13,254 companies tracked

RevenueBase identified 13,254 union labor law firms worldwide as of September 2026 and tracks 144,609 professional contacts across them, including 67,381 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers union labor law firms 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 29, 2026. Country and city lists for union labor law firms 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

13,254Companies

144,609Contacts tracked

67,381Verified emails

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The 25 largest union labor law firms worldwide

Ranked by team size

Top 25 of 13,254 union labor law firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to union labor law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Gordon Rees Scully Mansukhani, LLP	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,846 contacts →
	Partial evidence “As the only full-service law firm with offices and attorneys in all 50 states, Gordon Rees Scully Mansukhani delivers maximum value to our clients by combining the resources of a…” Source: RevenueBase Database · checked Sep 29, 2026
2	Ogletree Deakins	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,708 contacts →
	Strong evidence “Ogletree Deakins is one of the largest labor and employment law firms representing management in all types of employment-related legal matters.” Source: RevenueBase Database · checked Sep 29, 2026
3	Littler	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,555 contacts →
	Strong evidence “Littler is the largest global employment and labor law practice, representing management in all aspects of employment and labor law and serving as a single-source solution…” Source: RevenueBase Database · checked Sep 29, 2026
4	Jackson Lewis P.C	Strong evidence	New York, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,285 contacts →
	Strong evidence “Focused on employment and labor law since 1958, Jackson Lewis P.C.’s attorneys located in major cities nationwide consistently identify and respond to new ways workplace law…” Source: RevenueBase Database · checked Sep 29, 2026
5	Nelson Mullins Riley & Scarborough	Partial evidence	Columbia, SC, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,012 contacts →
	Partial evidence “Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.” Source: RevenueBase Database · checked Sep 29, 2026
6	Fisher Phillips	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	501-1,000	1,471 contacts →
	Indirect evidence “With hundreds of attorneys across the globe, Fisher Phillips advises and advocates for employers internationally on some of the most complex and high-profile workplace matters.” Source: RevenueBase Database · checked Sep 29, 2026
7	Maurice Blackburn Lawyers	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	1,001-5,000	1,099 contacts →
	Partial evidence “Maurice Blackburn Lawyers is Australia’s leading plaintiff and social justice law firm.” Source: RevenueBase Database · checked Sep 29, 2026
8	Quintairos, Prieto, Wood & Boyer, P.A	Partial evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,068 contacts →
	Partial evidence “Over the past 25 years, QPWB is one of the fastest-growing law firms in the US.” Source: RevenueBase Database · checked Sep 29, 2026
9	Kutak Rock	Indirect evidence	United StatesHQ checked Sep 29, 2026	501-1,000	985 contacts →
	Indirect evidence “We are a U.S.” Source: RevenueBase Database · checked Sep 29, 2026
10	Goldberg Segalla	Indirect evidence	Buffalo, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	958 contacts →
	Indirect evidence “Goldberg Segalla is a national civil litigation firm with a diverse team of 500+ attorneys in 23 offices in major metropolitan markets across the United States, providing…” Source: RevenueBase Database · checked Sep 29, 2026
11	Phelps Dunbar LLP	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 29, 2026	501-1,000	824 contacts →
	Indirect evidence “As an AmLaw 200 firm, Phelps provides strategic legal counsel to businesses across the South, with 17 offices in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026
12	Burr & Forman	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 29, 2026	201-500	823 contacts →
	Indirect evidence “For more than a century, Burr & Forman LLP’s experienced legal team has served clients at the intersection of business and government with local, national, and international…” Source: RevenueBase Database · checked Sep 29, 2026
13	Hall Booth Smith, P.C	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	501-1,000	815 contacts →
	Partial evidence “Established in 1989, Hall Booth Smith, P.C.(HBS) is a full-service law firm with 33 offices across the United States.” Source: RevenueBase Database · checked Sep 29, 2026
14	Chalfin, Goldberg & Vainboim Advogados	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 29, 2026	501-1,000	799 contacts →
	Partial evidence “Through hard work and dedication over the past 15 years, Chalfin, Goldberg & Vainboim Advogados (“CGV“) has achieved a leading position among the biggest and best Brazilian law…” Source: RevenueBase Database · checked Sep 29, 2026
15	Fordharrison LLP	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	201-500	746 contacts →
	Partial evidence “FordHarrison LLP - your partner in employment law.” Source: RevenueBase Database · checked Sep 29, 2026
16	Epstein Becker Green	Strong evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	701 contacts →
	Strong evidence “Clients turn to Epstein Becker Green for strategic counsel in employment and labor law, health care and life sciences, and complex litigation.” Source: RevenueBase Database · checked Sep 29, 2026
17	Thompsons Solicitors	Partial evidence	Great Russell Street, United KingdomHQ checked Sep 29, 2026	501-1,000	668 contacts →
	Partial evidence “Thompsons Solicitors is the UK's most experienced personal injury and employment rights law firm, our commitment to social justice is at the heart of our practice.” Source: RevenueBase Database · checked Sep 29, 2026
18	Wicker Smith	Indirect evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	501-1,000	625 contacts →
	Indirect evidence “Idus Q.” Source: RevenueBase Database · checked Sep 29, 2026
19	Advocacia	Partial evidence	Florianopolis, BrazilHQ checked Sep 29, 2026	n/a	613 contacts →
	Partial evidence “Advocacia is a law practice company based out of Av Rio Branco, 441, Florianopolis, Sc, Brazil.” Source: RevenueBase Database · checked Sep 29, 2026
20	Parker POE Adams & Bernstein LLP	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 29, 2026	501-1,000	584 contacts →
	Indirect evidence “Businesses and local governments turn to Parker Poe to structure transactions, navigate regulations, and resolve disputes.” Source: RevenueBase Database · checked Sep 29, 2026
21	FFA Ferrareze E Freitas	Indirect evidence	São Paulo, BrazilHQ checked Sep 29, 2026	201-500	564 contacts →
	Indirect evidence “SOBRE O FFA O início das atividades remonta ao ano de 1982, na cidade de Passo Fundo, Planalto Médio do Rio Grande do Sul.” Source: RevenueBase Database · checked Sep 29, 2026
22	Amundsen Davis, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	201-500	542 contacts →
	Partial evidence “Amundsen Davis is a law firm comprised of over 250 attorneys headquartered in Chicago.” Source: RevenueBase Database · checked Sep 29, 2026
23	Bowman And Brooke	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 29, 2026	501-1,000	537 contacts →
	Indirect evidence “Bowman and Brooke LLP is a nationally recognized trial firm with one of the largest product liability practices in the country.” Source: RevenueBase Database · checked Sep 29, 2026
24	STBB	Partial evidence	Cape Town, South AfricaHQ checked Sep 29, 2026	501-1,000	531 contacts →
	Partial evidence “STBB is one of the largest law firms in South Africa and offers a wide range of legal services from its 13 offices.” Source: RevenueBase Database · checked Sep 29, 2026
25	Allen Matkins	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	527 contacts →
	Partial evidence “Allen Matkins, a law firm with over 285 attorneys, was founded with deep roots in real estate and has leveraged that foundation to grow and build prominent litigation, corporate…” Source: RevenueBase Database · checked Sep 29, 2026

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: union labor law firms. 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 union labor law firms.
Partial evidence: Its own public description names part of union labor law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name union labor law firms. 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 13,254 union labor law firms worldwide

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Union labor law firms worldwide at a glance

As of Sep 29, 2026

46.6%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

3.7%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

9,030

11-50

3,380

51-200

613

201-500

104

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 union labor law firms, 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: Every country. Country and city lists for union labor law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “union labor law firms”. 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 union labor law firms), 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 union labor law firms, 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, 67,381 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 29, 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.

Union labor law firms by location

78 lists · largest first

Every Union labor law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 union labor law firms, 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 union labor law firms are there worldwide?

RevenueBase identified 13,254 union labor law firms 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?

Gordon Rees Scully Mansukhani, LLP, headquartered in San Francisco, tops this list with the largest team on record.

Which country has the most union labor law firms?

The United States leads with 5,854 companies, followed by Brazil (2,377) and France (448). Every union labor law firms list by country and city is linked on this page.

Which city has the most union labor law firms?

Sao Paulo leads with 489 headquartered companies, followed by New York (318) and Los Angeles (264).

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 67,381 verified decision-maker contacts tracked across these 13,254 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 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.