Company lists · Data refreshed September 2026
Top 25 International employment law firms based in Boston, United States
RevenueBase identified 71 international employment law firms headquartered in Boston, United States as of September 2026 and tracks 5,197 professional contacts across them, including 2,882 with verified work emails. Across the United States, New York is the largest hub for this category (404 companies); Boston has 71.
This list covers international employment law firms headquartered in Boston, 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.
The 25 largest international employment law firms based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,776 contacts → | ||||
Partial evidence “Nixon Peabody LLP is an American Lawyer top-100 law firm in the United States and has 15 offices worldwide.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 787 contacts → | ||||
Strong evidence “Foley Hoag is an award-winning, mid-sized, international law firm that focuses on innovative industries and high-stakes litigation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 575 contacts → | ||||
Indirect evidence “Paul, Weiss, Rifkind, Wharton & Garrison LLP is a firm of about lawyers with diverse backgrounds, personalities, ideas and interests who provide innovative and effective solutions…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 496 contacts → | ||||
Indirect evidence “Collaboration is not just a pillar of our strategy; it is the key to our competitive advantage and approach to clients, community, and each other.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 398 contacts → | ||||
Indirect evidence “For 75 years, Morrison Mahoney LLP has been committed to servicing its clients' needs and working with its clients to achieve desired goals and objectives.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 286 contacts → | ||||
Indirect evidence “Decency, honesty, and judgment.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 104 contacts → | ||||
Indirect evidence “The Casner & Edwards Difference In today’s increasingly complex legal environment, companies, organizations and individuals look to Casner & Edwards for attorneys who provide both…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 82 contacts → | ||||
Partial evidence “Conn Kavanaugh is a Boston-based law firm representing individuals, families, and organizations, from Fortune 100 companies to closely held, family businesses and everything in…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 73 contacts → | ||||
Indirect evidence “Since 1973, our full-service firm has identified opportunities, surmounted challenges, and optimized results for our clients at reasonable rates.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 53 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 52 contacts → | ||||
Strong evidence “Morgan, Brown & Joy is among New England's oldest and largest management-side employment law firm.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 48 contacts → | ||||
Indirect evidence “Tentindo, Kendall, Canniff & Keefe LLP (TKCK) concentrates in the representation of insurers, businesses, and employers in Massachusetts, New Hampshire, Connecticut, Rhode Island…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 41 contacts → | ||||
Indirect evidence “Gesmer Updegrove prides itself as being among the most respected, efficient, and bespoke firms in the region.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 36 contacts → | ||||
Partial evidence “HRW’s team of experienced attorneys helps employers remain in compliance with the law and avoid or resolve every manner of workplace dispute.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 30 contacts → | ||||
Indirect evidence “Since 1984, McKenzie & Associates, P.C.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 25 contacts → | ||||
Indirect evidence “Formed in 1991, Tarlow, Breed, Hart & Rodgers, P.C.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 20 contacts → | ||||
Partial evidence “Clark Lau LLC is a national immigration law firm that takes pride in partnering with clients across the world to develop effective and creative solutions to the real-life problems…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 14 contacts → | ||||
Indirect evidence “Since 1977, we have proudly served the men and women of the massachusetts labor movement.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 11 contacts → | ||||
Strong evidence “Hartley Michon Robb Hannon LLP concentrates in employment law, executive advocacy and litigation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Partial evidence “For over 100 years, Rubin and Rudman's attorneys have helped shape the laws of changing times.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Indirect evidence “Strang Scott is a dynamic business transaction and litigation firm, dedicated to serving the needs of business of all sizes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Indirect evidence “With offices in Austin, Boston, New York and London, Thomas H.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Partial evidence “We are pleased to announce that, effective April 1, 2018, the attorneys, paralegals and support staff formerly with Governo Law Firm LLC have moved to Smith Duggan Buell & Rufo…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: international employment 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 international employment law firms.
- Partial evidence
- Its own public description names part of international employment law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name international employment 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 71 international employment law firms based in Boston, United States
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International employment law firms based in Boston, United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 71 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 international employment 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 Boston, United States whose own description of what they do matches “international employment 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 international employment 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 international employment law firms, and records with no verified work email. Companies headquartered outside Boston 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, 2,882 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.
International employment law firms by metro in the United States
- International employment law firms in New York404
- International employment law firms in Los Angeles221
- International employment law firms in Chicago137
- International employment law firms in Washington126
- International employment law firms in Houston112
- International employment law firms in Miami103
- International employment law firms in San Francisco98
- International employment law firms in Atlanta97
- International employment law firms in Dallas82
- International employment law firms in San Diego76
- International employment law firms in Irvine60
- International employment law firms in Seattle50
- International employment law firms in Philadelphia47
- International employment law firms in Tampa44
- International employment law firms in Minneapolis42
- International employment law firms in Denver38
- International employment law firms in Phoenix38
- International employment law firms in Austin37
- International employment law firms in Coral Gables33
- International employment law firms in Pasadena33
- International employment law firms in Cleveland31
- International employment law firms in Columbus30
- International employment law firms in Birmingham27
- International employment law firms in New Orleans27
- International employment law firms in Orlando27
- International employment law firms in Beverly Hills26
- International employment law firms in Portland26
- International employment law firms in Sacramento25
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 international employment 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 international employment law firms are there based in Boston, United States?
RevenueBase identified 71 international employment law firms headquartered in Boston, 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?
Nixon Peabody LLP, headquartered in Boston, tops this list with the largest team on record.
Which city in the United States has the most international employment law firms?
New York leads the United States with 404 headquartered companies, followed by Los Angeles (221) and Chicago (137). Boston has 71.
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 2,882 verified decision-maker contacts tracked across these 71 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.
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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.
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