Company lists · Data refreshed September 2026
Top 25 Labor union consulting firms based in the United States
RevenueBase identified 471 company matches for labor union consulting firms associated with the United States as of September 2026 and tracks 8,678 professional contacts across them, including 5,178 with verified work emails. New York is the largest hub.
This list covers company matches for labor union consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 labor union consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,555 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 2,285 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 429 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 150 contacts → | ||||
Exact match “Outten & Golden is a nationally recognized law firm for employees.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 119 contacts → | ||||
Exact match “Martenson, Hasbrouck & Simon LLP is headquartered in Atlanta, with offices in Carlsbad, Chicago, Dallas, New York, and Sacramento, making us geographically and strategically…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 87 contacts → | ||||
Exact match “People Results is an experienced team of consultants who collaborate, innovate, and anticipate mission-critical challenges and deliver impactful business results.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 80 contacts → | ||||
Exact match “Willig, Williams & Davidson is one of the largest and most respected union-side labor law firms in the United States.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 77 contacts → | ||||
Exact match “D.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 50 contacts → | ||||
Exact match “Ballard Rosenberg Golper & Savitt, LLP is an A-V rated law firm engaged exclusively in the practice of labor and employment law on behalf of employers and management.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 49 contacts → | ||||
Exact match “Bredhoff & Kaiser PLLC is one of the nation’s preeminent law firms devoted to empowering workers and the institutions that advocate for them.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 48 contacts → | ||||
Exact match “Welcome to Union One, a national advisory, brokerage, and technology firm serving labor unions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 47 contacts → | ||||
Exact match “Whether vigorously protecting your business and reputation from wrongful accusations or tackling other complex labor & employment issues nationwide, Kullman brings powerful…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 44 contacts → | ||||
Exact match “The Law Offices of Joseph A.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 42 contacts → | ||||
Exact match “Labor and Employment Law is all we do.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 41 contacts → | ||||
Exact match “LRI Consulting Services, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 40 contacts → | ||||
Exact match “Lindner & Marsack is one of the nation's pre-eminent law firms specializing in labor and employment law.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 40 contacts → | ||||
Exact match “Clemans Nelson is the preeminent public sector labor relations and human resource consulting firm in the state of Ohio.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 40 contacts → | ||||
Exact match “FH Solutions Group (FHSG) is a national human resources and labor relations consulting firm headquartered in Washington, DC.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 39 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 39 contacts → | ||||
Exact match “At Barran Liebman LLP our experienced and dedicated attorneys focus on representing employers and finding solutions for their employment law and labor management needs.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 35 contacts → | ||||
Exact match “O'Donoghue & O'Donoghue LLP is one of the largest and oldest union-side law firms in the United States, with offices in Washington, D.C, Philadelphia, Pennsylvania, and Annapolis…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 31 contacts → | ||||
Exact match “Elarbee Thompson, an award-winning Atlanta based law firm, specializes in matters of employment and labor law and complex litigation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 29 contacts → | ||||
Exact match “A Law Firm For The People Who Keep America Working Weinberg, Roger & Rosenfeld is one of the nation’s leading firms representing unions and working people in all aspects of labor…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 28 contacts → | ||||
Exact match “Union Insurance Group represents over 6,800 labor organizations including international unions, district councils, building trades councils, federations, apprenticeship programs…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 28 contacts → | ||||
Exact match “Law practice representing labor since 1937.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “labor union consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 471 labor union consulting firms based in the United States
See the full list, filter by size, metro and specialty, and access 5,178 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Labor union consulting firms based in the United States at a glance
As of Sep 28, 2026Companies by employee count
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 471 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “labor union consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 5,178 professional contacts with verified work emails across the full matched dataset. 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.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Labor union consulting firms by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “labor union consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many labor union consulting firms are there based in the United States?
RevenueBase identified 471 company matches for labor union consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Littler tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most labor union consulting firms?
New York leads with 33 company records, followed by Los Angeles (23) and Washington (21).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,178 professional contacts with verified work emails tracked across these 471 companies; direct dials are available where recorded.
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 471 labor union consulting firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Labor union consulting firms by geography
- Labor union consulting firms based in Belo Horizonte, Brazil
- Labor union consulting firms based in Curitiba, Brazil
- Labor union consulting firms based in Porto Alegre, Brazil
- Labor union consulting firms based in Rio De Janeiro, Brazil
- Labor union consulting firms based in Sao Paulo, Brazil
- Labor union consulting firms based in Paris, France
- Labor union consulting firms based in Milan, Italy
- Labor union consulting firms based in Rome, Italy
- Labor union consulting firms based in Barcelona, Spain
- Labor union consulting firms based in Madrid, Spain
- Labor union consulting firms based in New York, United States
- Labor union consulting firms based in Brazil
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 SmartSearch, 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Labor union consulting firms based in Belo Horizonte, Brazil
- Labor union consulting firms based in Curitiba, Brazil
- Labor union consulting firms based in Porto Alegre, Brazil
- Labor union consulting firms based in Rio De Janeiro, Brazil
- Labor union consulting firms based in Sao Paulo, Brazil
- Labor union consulting firms based in Paris, France
Company intelligence · public preview
Top 25 labor union consulting firms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 471 matching company records for labor union consulting firms based in the United States, with 8,678 tracked contacts and 5,178 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 labor union consulting firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Littlerlittler.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 2,555 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Jackson Lewis P.Cjacksonlewis.comHQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 2,285 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Constangyconstangy.comHQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 429 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Outten & Golden LLPouttengolden.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 150 contacts → |
“Outten & Golden is a nationally recognized law firm for employees.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Martenson, Hasbrouck & Simon LLPmartensonlaw.comHQ: Brookhaven, GA, United StatesReported employees: 51-200 | Brookhaven, GA, United States | 51-200 | Exact match | 119 contacts → |
“Martenson, Hasbrouck & Simon LLP is headquartered in Atlanta, with offices in Carlsbad, Chicago, Dallas, New York, and Sacramento, making us geographically and strategically…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  People Resultspeopleresults.comHQ: Troy, MI, United StatesReported employees: 51-200 | Troy, MI, United States | 51-200 | Exact match | 87 contacts → |
“People Results is an experienced team of consultants who collaborate, innovate, and anticipate mission-critical challenges and deliver impactful business results.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Willig, Williams & Davidsonwwdlaw.comHQ: Philadelphia, PA, United StatesReported employees: 51-200 | Philadelphia, PA, United States | 51-200 | Exact match | 80 contacts → |
“Willig, Williams & Davidson is one of the largest and most respected union-side labor law firms in the United States.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  D. Hilton Associates, INCdhilton.comHQ: The Woodlands, TX, United StatesReported employees: 11-50 | The Woodlands, TX, United States | 11-50 | Exact match | 77 contacts → |
“D.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Ballard Rosenberg Golper & Savittbrgslaw.comHQ: Encino, CA, United StatesReported employees: 11-50 | Encino, CA, United States | 11-50 | Exact match | 50 contacts → |
“Ballard Rosenberg Golper & Savitt, LLP is an A-V rated law firm engaged exclusively in the practice of labor and employment law on behalf of employers and management.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Bredhoff & Kaiser Pllcbredhoff.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 49 contacts → |
“Bredhoff & Kaiser PLLC is one of the nation’s preeminent law firms devoted to empowering workers and the institutions that advocate for them.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Union ONEunionone.com HQ: Lake Barrington, IL, United StatesReported employees: 51-200 | Lake Barrington, IL, United States | 51-200 | Exact match | 48 contacts → |
“Welcome to Union One, a national advisory, brokerage, and technology firm serving labor unions.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  The Kullman Firmkullmanlaw.comHQ: New Orleans, LA, United StatesReported employees: 51-200 | New Orleans, LA, United States | 51-200 | Exact match | 47 contacts → |
“Whether vigorously protecting your business and reputation from wrongful accusations or tackling other complex labor & employment issues nationwide, Kullman brings powerful…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  LAW Offices Of Joseph A. Romano, P.Cromanoatlaw.comHQ: Yonkers, NY, United StatesReported employees: 51-200 | Yonkers, NY, United States | 51-200 | Exact match | 44 contacts → |
“The Law Offices of Joseph A.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Allen Norton & Blue, P.Aanblaw.comHQ: Coral Gables, FL, United StatesReported employees: 51-200 | Coral Gables, FL, United States | 51-200 | Exact match | 42 contacts → |
“Labor and Employment Law is all we do.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Broken Arrow, OK, United StatesReported employees: 11-50 | Broken Arrow, OK, United States | 11-50 | Exact match | 41 contacts → |
“LRI Consulting Services, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Lindner & Marsack, S.Clindner-marsack.comHQ: Milwaukee, WI, United StatesReported employees: 11-50 | Milwaukee, WI, United States | 11-50 | Exact match | 40 contacts → |
“Lindner & Marsack is one of the nation's pre-eminent law firms specializing in labor and employment law.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Clemans, Nelson & Associates, INCclemansnelson.comHQ: Columbus, OH, United StatesReported employees: 11-50 | Columbus, OH, United States | 11-50 | Exact match | 40 contacts → |
“Clemans Nelson is the preeminent public sector labor relations and human resource consulting firm in the state of Ohio.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  FH Solutions Groupfhsolutionsgroup.comHQ: District Of Columbia, United StatesReported employees: 11-50 | District Of Columbia, United States | 11-50 | Exact match | 40 contacts → |
“FH Solutions Group (FHSG) is a national human resources and labor relations consulting firm headquartered in Washington, DC.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Cohen, Weiss And Simon LLPcwsny.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 39 contacts → |
“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.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Barran Liebman LLPbarran.comHQ: Portland, OR, United StatesReported employees: 11-50 | Portland, OR, United States | 11-50 | Exact match | 39 contacts → |
“At Barran Liebman LLP our experienced and dedicated attorneys focus on representing employers and finding solutions for their employment law and labor management needs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  O'donoghue & O'donoghue LLPodonoghuelaw.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 35 contacts → |
“O'Donoghue & O'Donoghue LLP is one of the largest and oldest union-side law firms in the United States, with offices in Washington, D.C, Philadelphia, Pennsylvania, and Annapolis…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Elarbee Thompsonelarbeethompson.comHQ: Atlanta, GA, United StatesReported employees: 11-50 | Atlanta, GA, United States | 11-50 | Exact match | 31 contacts → |
“Elarbee Thompson, an award-winning Atlanta based law firm, specializes in matters of employment and labor law and complex litigation.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Weinberg, Roger & Rosenfeldunioncounsel.net HQ: Alameda, CA, United StatesReported employees: 51-200 | Alameda, CA, United States | 51-200 | Exact match | 29 contacts → |
“A Law Firm For The People Who Keep America Working Weinberg, Roger & Rosenfeld is one of the nation’s leading firms representing unions and working people in all aspects of labor…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Union Insurance Groupuigins.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 28 contacts → |
“Union Insurance Group represents over 6,800 labor organizations including international unions, district councils, building trades councils, federations, apprenticeship programs…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Spear Wildermanspearwilderman.com HQ: Philadelphia, United StatesReported employees: 11-50 | Philadelphia, United States | 11-50 | Exact match | 28 contacts → |
“Law practice representing labor since 1937.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 471 company matches
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Labor union consulting firms: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
470 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 471 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Labor union consulting firms by metro
Questions about this company list
What does Exact match mean for labor union consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many labor union consulting firms did RevenueBase find based in the United States?
The saved snapshot records 471 matching company records, 8,678 tracked contacts and 5,178 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Labor union consulting firms by geography
- Labor union consulting firms based in Belo Horizonte, Brazil
- Labor union consulting firms based in Curitiba, Brazil
- Labor union consulting firms based in Porto Alegre, Brazil
- Labor union consulting firms based in Rio De Janeiro, Brazil
- Labor union consulting firms based in Sao Paulo, Brazil
- Labor union consulting firms based in Paris, France
- Labor union consulting firms based in Milan, Italy
- Labor union consulting firms based in Rome, Italy
- Labor union consulting firms based in Barcelona, Spain
- Labor union consulting firms based in Madrid, Spain
- Labor union consulting firms based in New York, United States
- Labor union consulting firms based in Brazil
Cite this list
RevenueBase Data Team. Top 25 labor union consulting firms based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/labor-union-consulting-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Labor union consulting firms based in Belo Horizonte, Brazil
- Labor union consulting firms based in Curitiba, Brazil
- Labor union consulting firms based in Porto Alegre, Brazil
- Labor union consulting firms based in Rio De Janeiro, Brazil
- Labor union consulting firms based in Sao Paulo, Brazil
- Labor union consulting firms based in Paris, France
Company intelligence · public preview
Top 25 labor union consulting firms based in the United States
RevenueBase records 471 matching company records for labor union consulting firms based in the United States, with 8,678 tracked contacts and 5,178 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 labor union consulting firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Littlerlittler.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 2,555 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Jackson Lewis P.Cjacksonlewis.com HQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 2,285 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Constangyconstangy.com HQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 429 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Outten & Golden LLPouttengolden.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 150 contacts → |
“Outten & Golden is a nationally recognized law firm for employees.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Martenson, Hasbrouck & Simon LLPmartensonlaw.com HQ: Brookhaven, GA, United StatesReported employees: 51-200 | Brookhaven, GA, United States | 51-200 | Exact match | 119 contacts → |
“Martenson, Hasbrouck & Simon LLP is headquartered in Atlanta, with offices in Carlsbad, Chicago, Dallas, New York, and Sacramento, making us geographically and strategically…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | People Resultspeopleresults.com HQ: Troy, MI, United StatesReported employees: 51-200 | Troy, MI, United States | 51-200 | Exact match | 87 contacts → |
“People Results is an experienced team of consultants who collaborate, innovate, and anticipate mission-critical challenges and deliver impactful business results.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Willig, Williams & Davidsonwwdlaw.com HQ: Philadelphia, PA, United StatesReported employees: 51-200 | Philadelphia, PA, United States | 51-200 | Exact match | 80 contacts → |
“Willig, Williams & Davidson is one of the largest and most respected union-side labor law firms in the United States.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | D. Hilton Associates, INCdhilton.com HQ: The Woodlands, TX, United StatesReported employees: 11-50 | The Woodlands, TX, United States | 11-50 | Exact match | 77 contacts → |
“D.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Ballard Rosenberg Golper & Savittbrgslaw.com HQ: Encino, CA, United StatesReported employees: 11-50 | Encino, CA, United States | 11-50 | Exact match | 50 contacts → |
“Ballard Rosenberg Golper & Savitt, LLP is an A-V rated law firm engaged exclusively in the practice of labor and employment law on behalf of employers and management.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Bredhoff & Kaiser Pllcbredhoff.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 49 contacts → |
“Bredhoff & Kaiser PLLC is one of the nation’s preeminent law firms devoted to empowering workers and the institutions that advocate for them.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Union ONEunionone.com HQ: Lake Barrington, IL, United StatesReported employees: 51-200 | Lake Barrington, IL, United States | 51-200 | Exact match | 48 contacts → |
“Welcome to Union One, a national advisory, brokerage, and technology firm serving labor unions.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | The Kullman Firmkullmanlaw.com HQ: New Orleans, LA, United StatesReported employees: 51-200 | New Orleans, LA, United States | 51-200 | Exact match | 47 contacts → |
“Whether vigorously protecting your business and reputation from wrongful accusations or tackling other complex labor & employment issues nationwide, Kullman brings powerful…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | LAW Offices Of Joseph A. Romano, P.Cromanoatlaw.com HQ: Yonkers, NY, United StatesReported employees: 51-200 | Yonkers, NY, United States | 51-200 | Exact match | 44 contacts → |
“The Law Offices of Joseph A.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Allen Norton & Blue, P.Aanblaw.com HQ: Coral Gables, FL, United StatesReported employees: 51-200 | Coral Gables, FL, United States | 51-200 | Exact match | 42 contacts → |
“Labor and Employment Law is all we do.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Broken Arrow, OK, United StatesReported employees: 11-50 | Broken Arrow, OK, United States | 11-50 | Exact match | 41 contacts → |
“LRI Consulting Services, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Lindner & Marsack, S.Clindner-marsack.com HQ: Milwaukee, WI, United StatesReported employees: 11-50 | Milwaukee, WI, United States | 11-50 | Exact match | 40 contacts → |
“Lindner & Marsack is one of the nation's pre-eminent law firms specializing in labor and employment law.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Clemans, Nelson & Associates, INCclemansnelson.com HQ: Columbus, OH, United StatesReported employees: 11-50 | Columbus, OH, United States | 11-50 | Exact match | 40 contacts → |
“Clemans Nelson is the preeminent public sector labor relations and human resource consulting firm in the state of Ohio.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | FH Solutions Groupfhsolutionsgroup.com HQ: District Of Columbia, United StatesReported employees: 11-50 | District Of Columbia, United States | 11-50 | Exact match | 40 contacts → |
“FH Solutions Group (FHSG) is a national human resources and labor relations consulting firm headquartered in Washington, DC.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Cohen, Weiss And Simon LLPcwsny.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 39 contacts → |
“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.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Barran Liebman LLPbarran.com HQ: Portland, OR, United StatesReported employees: 11-50 | Portland, OR, United States | 11-50 | Exact match | 39 contacts → |
“At Barran Liebman LLP our experienced and dedicated attorneys focus on representing employers and finding solutions for their employment law and labor management needs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | O'donoghue & O'donoghue LLPodonoghuelaw.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 35 contacts → |
“O'Donoghue & O'Donoghue LLP is one of the largest and oldest union-side law firms in the United States, with offices in Washington, D.C, Philadelphia, Pennsylvania, and Annapolis…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Elarbee Thompsonelarbeethompson.com HQ: Atlanta, GA, United StatesReported employees: 11-50 | Atlanta, GA, United States | 11-50 | Exact match | 31 contacts → |
“Elarbee Thompson, an award-winning Atlanta based law firm, specializes in matters of employment and labor law and complex litigation.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Weinberg, Roger & Rosenfeldunioncounsel.net HQ: Alameda, CA, United StatesReported employees: 51-200 | Alameda, CA, United States | 51-200 | Exact match | 29 contacts → |
“A Law Firm For The People Who Keep America Working Weinberg, Roger & Rosenfeld is one of the nation’s leading firms representing unions and working people in all aspects of labor…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Union Insurance Groupuigins.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 28 contacts → |
“Union Insurance Group represents over 6,800 labor organizations including international unions, district councils, building trades councils, federations, apprenticeship programs…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Spear Wildermanspearwilderman.com HQ: Philadelphia, United StatesReported employees: 11-50 | Philadelphia, United States | 11-50 | Exact match | 28 contacts → |
“Law practice representing labor since 1937.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 471 company matches
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Labor union consulting firms: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
470 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 471 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Labor union consulting firms by metro
Questions about this company list
What does Exact match mean for labor union consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many labor union consulting firms did RevenueBase find based in the United States?
The saved snapshot records 471 matching company records, 8,678 tracked contacts and 5,178 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Labor union consulting firms by geography
- Labor union consulting firms based in Belo Horizonte, Brazil
- Labor union consulting firms based in Curitiba, Brazil
- Labor union consulting firms based in Porto Alegre, Brazil
- Labor union consulting firms based in Rio De Janeiro, Brazil
- Labor union consulting firms based in Sao Paulo, Brazil
- Labor union consulting firms based in Paris, France
- Labor union consulting firms based in Milan, Italy
- Labor union consulting firms based in Rome, Italy
- Labor union consulting firms based in Barcelona, Spain
- Labor union consulting firms based in Madrid, Spain
- Labor union consulting firms based in New York, United States
- Labor union consulting firms based in Brazil
Cite this list
RevenueBase Data Team. Top 25 labor union consulting firms based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/labor-union-consulting-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Labor union consulting firms based in Belo Horizonte, Brazil
- Labor union consulting firms based in Curitiba, Brazil
- Labor union consulting firms based in Porto Alegre, Brazil
- Labor union consulting firms based in Rio De Janeiro, Brazil
- Labor union consulting firms based in Sao Paulo, Brazil
- Labor union consulting firms based in Paris, France