Company lists · Data refreshed September 2026

Top 25 HR compliance law firms based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 4,170 companies tracked

RevenueBase identified 4,170 HR compliance law firms headquartered in the United States as of September 2026 and tracks 55,345 professional contacts across them, including 30,555 with verified work emails. New York is the largest hub.

This list covers HR compliance law firms headquartered in the 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 28, 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 28, 2026 86% judged on-target in blind review

4,170Companies

55,345Contacts tracked

30,555Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest HR compliance law firms based in the United States

Ranked by team size

Top 25 of 4,170 HR compliance law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to HR 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	Ogletree Deakins	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,708 contacts →
	Partial 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 28, 2026
2	Littler	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,555 contacts →
	Partial 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 28, 2026
3	Alston & Bird	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,449 contacts →
	Indirect evidence “At Alston & Bird, a leading international firm, our people trust the people they work for, take pride in what they do, enjoy the people they work with and serve the communities in…” Source: RevenueBase Database · checked Sep 28, 2026
4	Jackson Lewis P.C	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,285 contacts →
	Partial 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 28, 2026
5	Fisher Phillips	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 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 28, 2026
6	Clark Hill LAW	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At Clark Hill, our value proposition is simple.” Source: RevenueBase Database · checked Sep 28, 2026
7	Thompson Hine LLP	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 28, 2026	501-1,000	929 contacts →
	Partial evidence “Thompson Hine LLP, a full-service business law firm with over 400 lawyers in 11 offices, was ranked number 1 in the category "Most innovative North American law firms: New working…” Source: RevenueBase Database · checked Sep 28, 2026
8	Buchalter	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	501-1,000	843 contacts →
	Partial evidence “Buchalter is a full-service business law firm with offices in Arizona, California, Colorado, Georgia, Illinois, Oregon, Tennessee, Utah, and Washington.” Source: RevenueBase Database · checked Sep 28, 2026
9	Phelps Dunbar LLP	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 28, 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 28, 2026
10	CT Corporation	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	788 contacts →
	Strong evidence “CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.” Source: RevenueBase Database · checked Sep 28, 2026
11	Wood, Smith, Henning & Berman LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 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 28, 2026
12	Fordharrison LLP	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	201-500	746 contacts →
	Partial evidence “FordHarrison LLP - your partner in employment law.” Source: RevenueBase Database · checked Sep 28, 2026
13	Epstein Becker Green	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	701 contacts →
	Partial 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 28, 2026
14	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	690 contacts →
	Partial evidence “Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…” Source: RevenueBase Database · checked Sep 28, 2026
15	Amundsen Davis, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
16	Chartwell LAW	Partial evidence	King Of Prussia, PA, United StatesHQ checked Sep 28, 2026	501-1,000	475 contacts →
	Partial evidence “Chartwell Law is nationally ranked as a fast-growing civil litigation firm with more than 300 attorneys across nearly 40 offices coast-to-coast.” Source: RevenueBase Database · checked Sep 28, 2026
17	Constangy	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	201-500	429 contacts →
	Indirect evidence “Constangy, Brooks, Smith & Prophete has more than 250 attorneys across 21 states and the District of Columbia, offering services including the defense of single and…” Source: RevenueBase Database · checked Sep 28, 2026
18	HR Personnel Services	Partial evidence	Minnetonka, MN, United StatesHQ checked Sep 28, 2026	n/a	402 contacts →
	Partial evidence “HR Personnel Services is a leading national staffing and executive search firm specializing exclusively in placing HR professionals.” Source: RevenueBase Database · checked Sep 28, 2026
19	Kaufman Dolowich LLP	Partial evidence	Woodbury, NY, United StatesHQ checked Sep 28, 2026	201-500	387 contacts →
	Partial evidence “Kaufman Dolowich LLP is a leading national law firm representing clients across a wide range of industries in key practice areas, including labor and employment, directors and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Post & Schell, P.C	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	201-500	336 contacts →
	Indirect evidence “For over 50 years, Post & Schell’s attorneys have combined the operational knowledge and insight into the industries they represent with creative legal solutions – and helped…” Source: RevenueBase Database · checked Sep 28, 2026
21	Jackson Kelly Pllc	Partial evidence	Charleston, WV, United StatesHQ checked Sep 28, 2026	201-500	330 contacts →
	Partial evidence “Jackson Kelly PLLC is a national law firm representing leading global corporations, national companies, entrepreneurs and individuals in areas of law such as environmental…” Source: RevenueBase Database · checked Sep 28, 2026
22	Miller Johnson	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 28, 2026	201-500	321 contacts →
	Indirect evidence “Miller Johnson was founded in 1959 and is committed to excellence in service to our business, institutional and individual clients.” Source: RevenueBase Database · checked Sep 28, 2026
23	Burns White LLC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	201-500	310 contacts →
	Indirect evidence “At Burns White LLC, we are committed to representing our clients with excellence.” Source: RevenueBase Database · checked Sep 28, 2026
24	Howard & Howard Attorneys Pllc	Partial evidence	Royal Oak, MI, United StatesHQ checked Sep 28, 2026	201-500	307 contacts →
	Partial evidence “From our founding above a blacksmith shop in 1869 to the full-service law practice we’ve become in the 156 years since, we have consistently sought to earn each client’s trust by…” Source: RevenueBase Database · checked Sep 28, 2026
25	Cole Schotz P.C	Indirect evidence	Hackensack, NJ, United StatesHQ checked Sep 28, 2026	201-500	304 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 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: HR 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 HR compliance law firms.
Partial evidence: Its own public description names part of HR 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 HR 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 4,170 HR compliance law firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 30,555 reachable decision-makers.

Free signup · no credit card

View the full list →

HR compliance law firms based in the United States at a glance

As of Sep 28, 2026

55.2%Verified-email coverage

13.3Average contacts per company

1-10Median size (employees)

5.9%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

3,135

11-50

803

51-200

166

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,170 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 HR 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 the United States whose own description of what they do matches “HR 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 HR 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 HR compliance law firms, and records with no verified work email. Companies headquartered outside United States 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, 30,555 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 28, 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.

HR compliance law firms by metro

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 HR 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 HR compliance law firms are there based in the United States?

RevenueBase identified 4,170 HR compliance law firms headquartered in the 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?

Ogletree Deakins, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most HR compliance law firms?

New York leads with 248 headquartered companies, followed by Los Angeles (189) and Houston (90).

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 30,555 verified decision-maker contacts tracked across these 4,170 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,170 HR compliance law firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

HR compliance law firms by geography

Browse the directory

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.