Company lists · Data refreshed September 2026

Top 25 Union compliance law firms based in Los Angeles, United States

Name: Union compliance law firms based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 327 companies tracked

RevenueBase identified 327 union compliance law firms headquartered in Los Angeles, United States as of September 2026 and tracks 10,789 professional contacts across them, including 5,799 with verified work emails. Across the United States, New York is the largest hub for this category (447 companies); Los Angeles follows with 327.

This list covers union compliance law firms headquartered in Los Angeles, 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 29, 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 29, 2026 86% judged on-target in blind review

327Companies

10,789Contacts tracked

5,799Verified emails

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The 25 largest union compliance law firms based in Los Angeles, United States

Ranked by team size

Top 25 of 327 union compliance law firms based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to union compliance 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	Lewis Brisbois	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,079 contacts →
	Partial evidence “Established in 1979, Lewis Brisbois Bisgaard & Smith LLP is a national, full-service law firm with more than 1,600 attorneys and 54 offices in 30 states and the District of…” Source: RevenueBase Database · checked Sep 29, 2026
2	Manatt, Phelps & Phillips, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	501-1,000	1,085 contacts →
	Indirect evidence “Forget everything you thought you knew about professional services firms.” Source: RevenueBase Database · checked Sep 29, 2026
3	Wood, Smith, Henning & Berman LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	501-1,000	781 contacts →
	Indirect evidence “Wood, Smith, Henning & Berman offers world-class representation for clients ranging from individuals to Fortune 500 corporations, with an emphasis on small to middle market firms.” Source: RevenueBase Database · checked Sep 29, 2026
4	Munger, Tolles & Olson LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	521 contacts →
	Indirect evidence “Munger, Tolles & Olson is a 200-lawyer firm based in Los Angeles with a national practice representing clients in a broad range of complex and high-profile matters.” Source: RevenueBase Database · checked Sep 29, 2026
5	The United Firm LA Liga Defensora, APC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	518 contacts →
	Indirect evidence “The United Firm \| La Liga Defensora, A.P.C.” Source: RevenueBase Database · checked Sep 29, 2026
6	Wilshire LAW Firm	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	501-1,000	369 contacts →
	Partial evidence “Wilshire Law Firm is excited to be among Southern California’s largest plaintiff personal injury, employee rights, and class action law firms.” Source: RevenueBase Database · checked Sep 29, 2026
7	Burke, Williams & Sorensen, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	296 contacts →
	Indirect evidence “For nearly 100 years, Burke, Williams & Sorensen, LLP has served public agencies and private business entities across California.” Source: RevenueBase Database · checked Sep 29, 2026
8	Manning Kass	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	282 contacts →
	Partial evidence “Founded in 1994 with just 16 attorneys and two practice areas, Manning Kass is today a top-tier full-service national law firm with more than 170 Attorneys, 8 offices, and 35…” Source: RevenueBase Database · checked Sep 29, 2026
9	Irell & Manella LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	258 contacts →
	Partial evidence “Irell & Manella LLP is a law firm focused on complex commercial and IP litigation.” Source: RevenueBase Database · checked Sep 29, 2026
10	Fagen Friedman & Fulfrost LLP F3 LAW	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	194 contacts →
	Partial evidence “Fagen Friedman & Fulfrost, LLP ("F3Law") is a full-service education law firm representing more than 500 educational institutions, including school districts, community college…” Source: RevenueBase Database · checked Sep 29, 2026
11	Liebert Cassidy Whitmore	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	188 contacts →
	Indirect evidence “Liebert Cassidy Whitmore serves as trusted advisors to public agencies, educational institutions, and nonprofits across California.” Source: RevenueBase Database · checked Sep 29, 2026
12	Glaser Weil	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	172 contacts →
	Partial evidence “Glaser Weil is a premier law firm headquartered in Los Angeles with outstanding experience and market-leading successes in litigation, corporate, intellectual property and real…” Source: RevenueBase Database · checked Sep 29, 2026
13	Haight Brown & Bonesteel	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	157 contacts →
	Indirect evidence “From civil litigation to business transactions, Haight Brown & Bonesteel LLP provides practical and effective resolution advice to the most perplexing disputes, ranging from early…” Source: RevenueBase Database · checked Sep 29, 2026
14	Murchison & Cumming, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	137 contacts →
	Indirect evidence “Murchison & Cumming, LLP is a California and Nevada civil litigation firm.” Source: RevenueBase Database · checked Sep 29, 2026
15	Richards Watson Gershon	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	104 contacts →
	Indirect evidence “Richards, Watson & Gershon delivers practical advice and solutions tailored to the unique needs of public entities.” Source: RevenueBase Database · checked Sep 29, 2026
16	Wolf, Rifkin, Shapiro, Schulman & Rabkin, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	72 contacts →
	Indirect evidence “WOLF, RIFKIN, SHAPIRO, SCHULMAN & RABKIN, LLP was founded in 1977 and is comprised of over 45 lawyers, with offices in Los Angeles and Las Vegas.” Source: RevenueBase Database · checked Sep 29, 2026
17	Ellis George LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	71 contacts →
	Indirect evidence “Ellis George LLP is a leader in business litigation that has been providing creative solutions, efficient teamwork and fearless advocacy to its clients for over 40 years.” Source: RevenueBase Database · checked Sep 29, 2026
18	Hill, Farrer & Burrill LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	67 contacts →
	Indirect evidence “Hill Farrer attorneys have successfully handled thousands of transactions and won thousands of cases.” Source: RevenueBase Database · checked Sep 29, 2026
19	King, Holmes, Paterno & Soriano, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	56 contacts →
	Indirect evidence “The attorneys at King, Holmes, Paterno & Soriano, LLP provide innovative thinking, cutting edge deal making and powerful litigation and business strategies to our clients.” Source: RevenueBase Database · checked Sep 29, 2026
20	Sanders Roberts, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	55 contacts →
	Indirect evidence “Sanders Roberts LLP specializes in business litigation, employment litigation, and general liability matters.” Source: RevenueBase Database · checked Sep 29, 2026
21	Laurel Employment LAW	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	53 contacts →
	Partial evidence “Laurel Employment Law was designed to be different.” Source: RevenueBase Database · checked Sep 29, 2026
22	Employee Justice Legal Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	51 contacts →
	Partial evidence “Employee Justice Legal Group, PC is a California based law firm, with headquarters in Los Angeles, CA and offices in Orange County and San Diego as well.” Source: RevenueBase Database · checked Sep 29, 2026
23	Orbach Huff & Henderson LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	41 contacts →
	Indirect evidence “David Orbach and David Huff founded the firm in 1997 and Phil Henderson joined in 2009.” Source: RevenueBase Database · checked Sep 29, 2026
24	Capstone LAW APC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	39 contacts →
	Partial evidence “Capstone Law APC, a California-based plaintiffs’ class action law firm, represents consumers, investors and employees nationwide in complex lawsuits involving securities and…” Source: RevenueBase Database · checked Sep 29, 2026
25	Geklaw	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	36 contacts →
	Partial evidence “Geklaw,(Gordon, Edelstein, Krepack, Grant, Felton & Goldstein, LLP) is a prominent law firm in Southern California specializing in Workers' Compensation.” 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 compliance 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 compliance law firms.
Partial evidence: Its own public description names part of union compliance 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 compliance 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 327 union compliance law firms based in Los Angeles, United States

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Union compliance law firms based in Los Angeles, United States at a glance

As of Sep 29, 2026

53.7%Verified-email coverage

33.0Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

185

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 327 companies.

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 compliance 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 Los Angeles, United States whose own description of what they do matches “union compliance 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 compliance 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 compliance law firms, and records with no verified work email. Companies headquartered outside Los Angeles 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, 5,799 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 compliance law firms by metro in the United States

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 compliance 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 compliance law firms are there based in Los Angeles, United States?

RevenueBase identified 327 union compliance law firms headquartered in Los Angeles, 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?

Lewis Brisbois, headquartered in Los Angeles, tops this list with the largest team on record.

Which city in the United States has the most union compliance law firms?

New York leads the United States with 447 headquartered companies, followed by Los Angeles (327) and Chicago (250).

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 5,799 verified decision-maker contacts tracked across these 327 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.