Company lists · Data refreshed September 2026

Top 25 Union compliance law firms based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 174 companies tracked

RevenueBase identified 174 union compliance law firms headquartered in Houston, United States as of September 2026 and tracks 1,512 professional contacts across them, including 775 with verified work emails. Across the United States, New York is the largest hub for this category (447 companies); Houston has 174.

This list covers union compliance law firms headquartered in Houston, 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

174Companies

1,512Contacts tracked

775Verified emails

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

Ranked by team size

Top 25 of 174 union compliance law firms based in Houston, 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	Johnson LAW Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	208 contacts →
	Partial evidence “For over 25 years, Johnson Law Group has been committed to delivering exceptional legal services with integrity, professionalism, and a client-focused approach.” Source: RevenueBase Database · checked Sep 29, 2026
2	Brown Sims, P.C	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	144 contacts →
	Indirect evidence “About Brown Sims - For over 50 years, Brown Sims has dedicated itself to providing its clients with experienced-based solutions tailored to their specific legal problems.” Source: RevenueBase Database · checked Sep 29, 2026
3	Roberts Markel Weinberg Butler Hailey PC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	82 contacts →
	Indirect evidence “Roberts Markel Weinberg Butler Hailey PC has provided the experience and service our clients require for their transactional and litigation needs for more than 35 years.” Source: RevenueBase Database · checked Sep 29, 2026
4	Thompson & Horton LLP	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	65 contacts →
	Partial evidence “Founded in 2009, Thompson & Horton LLP is a full-service law firm dedicated to providing the highest quality, personalized legal representation to schools, institutions of higher…” Source: RevenueBase Database · checked Sep 29, 2026
5	Crady Jewett Mcculley & Houren LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	52 contacts →
	Indirect evidence “Since the firm’s inception in 1896 and from its offices in Houston, Texas, Crady Jewett McCulley & Houren LLP has provided comprehensive legal counsel to businesses and…” Source: RevenueBase Database · checked Sep 29, 2026
6	Daniels & Tredennick Pllc	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	42 contacts →
	Partial evidence “Daniels & Tredennick handles complex legal matters across both litigation and corporate law.” Source: RevenueBase Database · checked Sep 29, 2026
7	Hanszen Laporte, LLP	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	42 contacts →
	Partial evidence “HANSZEN LAPORTE IS A HOUSTON-BASED, AV “PREEMINENT” RATED LAW FIRM COMPRISED OF THREE PRACTICE GROUPS, LITIGATION, BUSINESS AND REAL ESTATE.” Source: RevenueBase Database · checked Sep 29, 2026
8	GEE & Zhang, LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	33 contacts →
	Indirect evidence “Gee & Zhang, LLP (formerly known as Harry Gee & Associates PLLC) has been a leader in immigration services for more than 50 years.” Source: RevenueBase Database · checked Sep 29, 2026
9	Monty & Ramirez LLP	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	32 contacts →
	Strong evidence “Monty & Ramirez LLP is a law firm focused on the representation of public and private-sector employers in matters involving employment, labor, and immigration compliance issues.” Source: RevenueBase Database · checked Sep 29, 2026
10	Kherkher Garcia, LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	30 contacts →
	Indirect evidence “We are a team of trial lawyers that represent the common person.” Source: RevenueBase Database · checked Sep 29, 2026
11	Diggs & Sadler	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	28 contacts →
	Indirect evidence “We can be of assistance to you with any matter involving your family or your business personnel matters.” Source: RevenueBase Database · checked Sep 29, 2026
12	Coane And Associates, Pllc, Immigration LAW And Employment LAW	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	25 contacts →
	Partial evidence “Coane and Associates, PLLC, was founded in 1983 to deliver the highest quality of legal services in employment and labor law, immigration law, civil and business litigation, and…” Source: RevenueBase Database · checked Sep 29, 2026
13	The Cromeens LAW Firm, Pllc	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “Full-Service Construction Law Firm in Texas \| The Cromeens Law Firm, PLLC.” Source: RevenueBase Database · checked Sep 29, 2026
14	Eggleston & Briscoe, LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	21 contacts →
	Indirect evidence “Eggleston & Briscoe serves a predominantly corporate and institutional client base representing a variety of publicly and privately owned business interests.” Source: RevenueBase Database · checked Sep 29, 2026
15	Doyle, Restrepo, Harvin & Robbins, LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Indirect evidence “DRHR is comprised of an aggressive group of trial lawyers with complementary expertise and advocacy skills who have prevailed in or successfully resolved hundreds of lawsuits…” Source: RevenueBase Database · checked Sep 29, 2026
16	The Carter LAW Firm	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1-10	19 contacts →
	Partial evidence “The Carter Law Firm represents businesses and individuals for their legal needs in the business and corporate sectors.” Source: RevenueBase Database · checked Sep 29, 2026
17	Feldman & Feldman PC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1-10	17 contacts →
	Indirect evidence “With deep roots in Houston and Harris County, Cris and David Feldman have established a firm with a record in complex civil litigation, commercial disputes, personal injury…” Source: RevenueBase Database · checked Sep 29, 2026
18	Smith Parker Elliott, Pllc	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect evidence “A successful business is built upon good relationships.” Source: RevenueBase Database · checked Sep 29, 2026
19	Mcfadden Trachtenberg Pllc	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect evidence “We get it.” Source: RevenueBase Database · checked Sep 29, 2026
20	Pines Federal	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1-10	15 contacts →
	Partial evidence “The Law Offices of Eric L.” Source: RevenueBase Database · checked Sep 29, 2026
21	Adair Myers Stevenson Yagi Pllc	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1-10	14 contacts →
	Partial evidence “At Adair Myers Stevenson Yagi, we understand that most business owners want to work with a law firm with special expertise in business law and related matters.” Source: RevenueBase Database · checked Sep 29, 2026
22	Buck Keenan LLP	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “Buck Keenan is a boutique litigation law firm based in Houston, Texas.” Source: RevenueBase Database · checked Sep 29, 2026
23	Bissinger, Oshman, Williams & Strasburger LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “Bissinger, Oshman, Williams & Strasburger LLP is a business trial and transaction firm in the heart of Houston, Texas.” Source: RevenueBase Database · checked Sep 29, 2026
24	Shellist Lazarz Slobin LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “In May 2010, Todd Slobin became a named partner at Shellist Lazarz, forming Shellist Lazarz Slobin.” Source: RevenueBase Database · checked Sep 29, 2026
25	Effective January 16, 2024, SKV HAS Combined With Steptoe LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	12 contacts →
	Indirect evidence 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 174 union compliance law firms based in Houston, United States

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

As of Sep 29, 2026

51.3%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

124

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 174 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 Houston, 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 Houston 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, 775 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 Houston, United States?

RevenueBase identified 174 union compliance law firms headquartered in Houston, 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?

Johnson LAW Group, headquartered in Houston, 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). Houston has 174.

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 775 verified decision-maker contacts tracked across these 174 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.