Company lists · Data refreshed September 2026

Top 25 Union representation law firms based in New York, United States

Name: Union representation law firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 46 companies tracked

RevenueBase identified 46 union representation law firms headquartered in New York, United States as of September 2026 and tracks 743 professional contacts across them, including 428 with verified work emails and 366 with mobile numbers. Los Angeles is the largest hub.

This list covers union representation law firms headquartered in New York, United States, 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 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 13, 2026 86% judged on-target in blind review

46Companies

743Contacts tracked

428Verified emails

366Mobile numbers

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The 25 largest union representation law firms based in New York, United States

Ranked by team size

Top 25 of 46 union representation law firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to union representation 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	Dc37	Indirect evidence	New York, United StatesHQ checked Sep 13, 2026	51-200	194 contacts →
	Indirect evidence “DC 37’s Health and Security benefit package includes the largest prepaid legal services office in the country.” Source: RevenueBase Database · checked Sep 13, 2026
2	Outten & Golden LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	51-200	150 contacts →
	Partial evidence “Outten & Golden is a nationally recognized law firm for employees.” Source: RevenueBase Database · checked Sep 13, 2026
3	Cohen, Weiss And Simon LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	39 contacts →
	Indirect evidence “At Cohen, Weiss and Simon LLP, we are proud of our reputation as one of the nation's leading firms devoted exclusively to the interests of labor and working people.” Source: RevenueBase Database · checked Sep 13, 2026
4	Joseph & Norinsberg	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	38 contacts →
	Indirect evidence “We are New York City employment lawyers with over 20 years of experience and a 90% success rate.” Source: RevenueBase Database · checked Sep 13, 2026
5	Wigdor LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	33 contacts →
	Partial evidence “Wigdor LLP is widely considered one of the leading employment law firms in the country.” Source: RevenueBase Database · checked Sep 13, 2026
6	Virginia & Ambinder, LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	25 contacts →
	Partial evidence “With over 100 years of combined experience, the attorneys of Virginia & Ambinder, LLP are the strong legal representation that you need to protect your rights in the workplace.” Source: RevenueBase Database · checked Sep 13, 2026
7	Gorlick, Kravitz & Listhaus, P.C	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
8	Fine, Olin & Anderman, LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	51-200	23 contacts →
	Indirect evidence “New York Workers' Compensation and Social Security Disability Benefits Attorneys.” Source: RevenueBase Database · checked Sep 13, 2026
9	Levy Ratner	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	20 contacts →
	Partial evidence “Levy Ratner has over 50 years of successfully representing unions and plaintiffs, putting us at the forefront of the workers’ rights movement.” Source: RevenueBase Database · checked Sep 13, 2026
10	Spivak Lipton, LLP	Strong evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	15 contacts →
	Strong evidence “Our Firm represents individual employees, unions and employee benefit funds in all areas of labor and employment law.” Source: RevenueBase Database · checked Sep 13, 2026
11	The Ottinger LAW Firm, P.C	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	14 contacts →
	Indirect evidence “Employment Lawyers * Severance Pay * Non Compete * Executive Compensation * Discrimination We help employees and executives in workplace disputes.” Source: RevenueBase Database · checked Sep 13, 2026
12	Berke-Weiss LAW Pllc	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	11 contacts →
	Partial evidence “Berke-Weiss Law PLLC provides employees and employers with the tools they need to resolve workplace issues.” Source: RevenueBase Database · checked Sep 13, 2026
13	Sanocki Newman & Turret LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	11 contacts →
	Indirect evidence “Sanocki Newman & Turret LLP is a legal services company based out of 225 Broadway FL 8, New York, New York, United States.” Source: RevenueBase Database · checked Sep 13, 2026
14	O'dwyer & Bernstien, LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	10 contacts →
	Indirect evidence “O'Dwyer & Bernstien, LLP has proudly represented workers for over 100 years.” Source: RevenueBase Database · checked Sep 13, 2026
15	Stulberg & Walsh, LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	9 contacts →
	Partial evidence “Stulberg & Walsh, LLP is a New York City-based labor, employment and disability rights law boutique with a vibrant practice in public/private and domestic/cross-border workplace…” Source: RevenueBase Database · checked Sep 13, 2026
16	Eisner Dictor & Lamadrid, P.C	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	7 contacts →
	Partial evidence “Eisner Dictor & Lamadrid provides a broad array of legal services, including court and agency litigation under all federal, state and local labor and employment laws, arbitration…” Source: RevenueBase Database · checked Sep 13, 2026
17	White & Hilferty	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “New York Employment Lawyers Our Goal Is the Protection of Your Rights Most people don't even think about how much their jobs mean to them, until they are at risk of losing it, or…” Source: RevenueBase Database · checked Sep 13, 2026
18	Akin & Salaman	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	6 contacts →
	Partial evidence “AKIN & SALAMAN The labor & employment law attorneys at the Akin & Salaman are dedicated to fighting injustice and protecting New York and New Jersey employees from Sexual…” Source: RevenueBase Database · checked Sep 13, 2026
19	Pechman LAW Group, Pllc	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	5 contacts →
	Partial evidence “Pechman Law Group represents workers and businesses in workplace disputes.” Source: RevenueBase Database · checked Sep 13, 2026
20	Mazzola Mardon, PC	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	4 contacts →
	Indirect evidence “Mazzola Mardon, P.C.” Source: RevenueBase Database · checked Sep 13, 2026
21	Keil & Correa LLP	Strong evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	3 contacts →
	Strong evidence “Keil & Correa LLP is a New York City boutique labor and employment law firm providing advice and legal representation on labor and employment matters to management clients who…” Source: RevenueBase Database · checked Sep 13, 2026
22	Cary Kane LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	3 contacts →
	Partial evidence “At Cary Kane LLP, our attorneys are dedicated to representing employees, labor unions and employee benefit funds.” Source: RevenueBase Database · checked Sep 13, 2026
23	Raff And Becker, LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “With over 40 years of experience, the attorneys of Raff & Becker, LLP are dedicated to serving clients' needs.” Source: RevenueBase Database · checked Sep 13, 2026
24	Friedman & Anspach	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
25	Isaacs Devasia Castro & Wien LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	1-10	2 contacts →
	Indirect evidence “In Richard J.” Source: RevenueBase Database · checked Sep 13, 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 representation 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 representation law firms.
Partial evidence: Its own public description names part of union representation 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 representation 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 46 union representation law firms based in New York, United States

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Union representation law firms based in New York, United States at a glance

As of Sep 13, 2026

57.6%Verified-email coverage

49.3%Mobile-number coverage

16.2Average contacts per company

1-10Median size (employees)

115.2%Largest-city concentration · Los Angeles

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.5d

3430–30

8331–60

161–90

090–180

1180+

Company record updated

Median 76.0d

00–30

30931–60

33461–90

7490–180

26180+

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 representation 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.
What qualifies: Companies headquartered in New York, United States whose own description of what they do matches “union representation 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 representation 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 representation law firms, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 428 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 13, 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 representation law firms by metro in the United States

Union representation law firms in Los Angeles53
Union representation law firms in New York53

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 representation 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 representation law firms are there based in New York, United States?

RevenueBase identified 46 union representation law firms headquartered in New York, United States 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?

Dc37, headquartered in New York, tops this list with the largest team on record.

Which city has the most union representation law firms?

Los Angeles leads with 53 headquartered companies, followed by New York (53) and Washington (24).

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 428 verified decision-maker contacts tracked across these 46 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 13, 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.