Company lists · Data refreshed September 2026
Top 25 Employee relations outsourcing companies worldwide
RevenueBase identified 31,225 employee relations outsourcing companies worldwide as of September 2026 and tracks 569,862 professional contacts across them, including 101,811 with verified work emails. India is the largest market and Sao Paulo the largest hub.
This list covers employee relations outsourcing companies worldwide, 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. Country and city lists for employee relations outsourcing companies follow the table.
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 employee relations outsourcing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 84,166 contacts → | ||||
Indirect evidence “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 20,824 contacts → | ||||
Indirect evidence “Capita is an outsourcer, helping clients across the public and private sectors run complex business processes more efficiently, creating better consumer experiences.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 8,522 contacts → | ||||
Indirect evidence “Randstad North America, Inc.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 5,559 contacts → | ||||
Partial evidence “Global employment runs on Remote.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 4,761 contacts → | ||||
Indirect evidence “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4,504 contacts → | ||||
Indirect evidence “Atuamos nos principais setores de terceirização, e somos pioneiros na implantação de contratos à distância.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 4,056 contacts → | ||||
Indirect evidence “TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3,145 contacts → | ||||
Indirect evidence “Randstad is the world’s largest talent company and a partner of choice to clients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3,083 contacts → | ||||
Indirect evidence “Randstad es la empresa líder en España en soluciones de Recursos Humanos, haciendo posible que cada día personas en nuestro país tengan un empleo.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,866 contacts → | ||||
Indirect evidence “At Allegis Global Solutions (AGS), we’re in the human enterprise business.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,561 contacts → | ||||
Indirect evidence “SD Worx is your HR, Pay and Time partner in Europe.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2,437 contacts → | ||||
Partial evidence “VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,154 contacts → | ||||
Indirect evidence “Neeyamo is a leading technology-enabled global payroll and EOR solutions provider for multinational and micro-multinational corporations worldwide.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2,036 contacts → | ||||
Partial evidence “PT Danamas Insan Kreasi Andalan (DIKA) adalah solusi outsourcing terpercaya untuk membantu bisnis Anda tumbuh lebih cepat dan efisien.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,991 contacts → | ||||
Indirect evidence “Somos una organización con presencia internacional con más de 36 años de exitosa trayectoria.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,895 contacts → | ||||
Indirect evidence “A Nova Rio é uma empresa líder em multiplicidade de serviços, porque oferece um mundo de opções em terceirização para a sua empresa.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,809 contacts → | ||||
Indirect evidence “CIEL HR is the only company in India which provides a comprehensive suite of technology-driven human resources solutions across the entire human resource chain and impacts every…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,725 contacts → | ||||
Indirect evidence “Calibehr is a strategic business solutions provider company that offers end-to-end solutions to organizations for sustainable growth.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,717 contacts → | ||||
Indirect evidence “Gi Group Holding is a global ecosystem of integrated HR Services that aims at evolving the Labour Market by creating sustainable, social and economical value, emphasising the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,695 contacts → | ||||
Indirect evidence “Durante os anos 80, o mundo testemunhou o surgimento de uma nova ordem.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,687 contacts → | ||||
Indirect evidence “FESCO Adecco is a joint-venture human resources services company combining the strengths of FESCO Group (a China 500 Company and the first Chinese company in the human resources…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,591 contacts → | ||||
Partial evidence “We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,545 contacts → | ||||
Indirect evidence “Eurofirms Group is Spain's first talent management multinational.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,504 contacts → | ||||
Indirect evidence “Somos una empresa especializada en entregar servicios integrados en el sector de recursos humanos comprometida con los procesos y necesidades de cada uno de nuestros clientes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,479 contacts → | ||||
Indirect evidence “Acerta specializes in offering advice on all HR-related matters concerning Payroll, Social Security Statute, Legal advice and Talent Management.” 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: employee relations outsourcing companies. 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 employee relations outsourcing companies.
- Partial evidence
- Its own public description names part of employee relations outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name employee relations outsourcing companies. 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 31,225 employee relations outsourcing companies worldwide
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Employee relations outsourcing companies worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 employee relations outsourcing companies, 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.
- Coverage
- Every country. Country and city lists for employee relations outsourcing companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “employee relations outsourcing companies”. 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 employee relations outsourcing companies), 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 employee relations outsourcing companies, and records with no verified work email.
- 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, 101,811 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.
Employee relations outsourcing companies by location
142 lists · largest firstEvery Employee relations outsourcing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Employee relations outsourcing companies based in India4,258
- Employee relations outsourcing companies based in the United States3,857
- Employee relations outsourcing companies based in Brazil2,116
- Employee relations outsourcing companies based in the United Kingdom1,639
- Employee relations outsourcing companies based in France1,296
- Employee relations outsourcing companies based in Italy795
- Employee relations outsourcing companies based in the Netherlands776
- Employee relations outsourcing companies based in Canada709
- Employee relations outsourcing companies based in South Africa697
- Employee relations outsourcing companies based in Australia663
- Employee relations outsourcing companies based in Mexico577
- Employee relations outsourcing companies based in Argentina487
- Employee relations outsourcing companies based in Spain467
- Employee relations outsourcing companies based in Germany459
- Employee relations outsourcing companies based in Poland327
- Employee relations outsourcing companies based in the United Arab Emirates317
- Employee relations outsourcing companies based in Chile308
- Employee relations outsourcing companies based in Pakistan306
- Employee relations outsourcing companies based in Nigeria292
- Employee relations outsourcing companies based in the Philippines281
- Employee relations outsourcing companies based in Indonesia268
- Employee relations outsourcing companies based in Colombia259
- Employee relations outsourcing companies based in Belgium251
- Employee relations outsourcing companies based in Switzerland224
- Employee relations outsourcing companies based in Türkiye216
- Employee relations outsourcing companies based in Peru209
- Employee relations outsourcing companies based in Egypt208
- Employee relations outsourcing companies based in Kenya171
- Employee relations outsourcing companies based in Romania148
- Employee relations outsourcing companies based in Sweden139
- Employee relations outsourcing companies based in Malaysia135
- Employee relations outsourcing companies based in Singapore133
- Employee relations outsourcing companies based in Ireland124
- Employee relations outsourcing companies based in Saudi Arabia110
- Employee relations outsourcing companies based in Japan107
- Employee relations outsourcing companies based in New Zealand102
- Employee relations outsourcing companies based in Portugal101
- Employee relations outsourcing companies based in Guatemala79
- Employee relations outsourcing companies based in Denmark75
- Employee relations outsourcing companies based in Morocco71
- Employee relations outsourcing companies based in Austria69
- Employee relations outsourcing companies based in Ghana66
- Employee relations outsourcing companies based in Israel65
- Employee relations outsourcing companies based in Russia61
- Employee relations outsourcing companies based in Hungary60
- Employee relations outsourcing companies based in Bulgaria59
- Employee relations outsourcing companies based in Hong Kong58
- Employee relations outsourcing companies based in Costa Rica56
- Employee relations outsourcing companies based in Vietnam55
- Employee relations outsourcing companies based in Ukraine50
- Employee relations outsourcing companies based in Finland48
- Employee relations outsourcing companies based in Norway46
- Employee relations outsourcing companies based in Thailand45
- Employee relations outsourcing companies based in Serbia44
- Employee relations outsourcing companies based in Slovakia35
- Employee relations outsourcing companies based in Uruguay34
- Employee relations outsourcing companies based in Panama33
- Employee relations outsourcing companies based in Greece29
- Employee relations outsourcing companies based in Lithuania28
- Employee relations outsourcing companies based in Qatar27
- Employee relations outsourcing companies based in Luxembourg25
Cities
- Employee relations outsourcing companies based in Sao Paulo, Brazil434
- Employee relations outsourcing companies based in Mumbai, India352
- Employee relations outsourcing companies based in London, United Kingdom348
- Employee relations outsourcing companies based in New Delhi, India297
- Employee relations outsourcing companies based in Bangalore, India262
- Employee relations outsourcing companies based in Pune, India229
- Employee relations outsourcing companies based in Chennai, India228
- Employee relations outsourcing companies based in Noida, India228
- Employee relations outsourcing companies based in Paris, France216
- Employee relations outsourcing companies based in Dubai, United Arab Emirates207
- Employee relations outsourcing companies based in Hyderabad, India198
- Employee relations outsourcing companies based in Ahmedabad, India178
- Employee relations outsourcing companies based in Rio De Janeiro, Brazil169
- Employee relations outsourcing companies based in Delhi, India166
- Employee relations outsourcing companies based in Bengaluru, India153
- Employee relations outsourcing companies based in Nairobi, Kenya145
- Employee relations outsourcing companies based in Johannesburg, South Africa141
- Employee relations outsourcing companies based in Gurgaon, India136
- Employee relations outsourcing companies based in Sydney, Australia136
- Employee relations outsourcing companies based in Madrid, Spain126
- Employee relations outsourcing companies based in New York, United States123
- Employee relations outsourcing companies based in Singapore, Singapore117
- Employee relations outsourcing companies based in Kolkata, India112
- Employee relations outsourcing companies based in Santiago, Chile110
- Employee relations outsourcing companies based in Cairo, Egypt109
- Employee relations outsourcing companies based in Melbourne, Australia108
- Employee relations outsourcing companies based in Toronto, Canada104
- Employee relations outsourcing companies based in Curitiba, Brazil95
- Employee relations outsourcing companies based in Istanbul, Türkiye89
- Employee relations outsourcing companies based in Gurugram, India86
- Employee relations outsourcing companies based in Lima, Peru86
- Employee relations outsourcing companies based in Cape Town, South Africa85
- Employee relations outsourcing companies based in Milano, Italy73
- Employee relations outsourcing companies based in Atlanta, United States68
- Employee relations outsourcing companies based in Belo Horizonte, Brazil68
- Employee relations outsourcing companies based in Jaipur, India66
- Employee relations outsourcing companies based in Warszawa, Poland66
- Employee relations outsourcing companies based in Montreal, Canada65
- Employee relations outsourcing companies based in Pretoria, South Africa65
- Employee relations outsourcing companies based in Houston, United States62
- Employee relations outsourcing companies based in Navi Mumbai, India61
- Employee relations outsourcing companies based in Los Angeles, United States57
- Employee relations outsourcing companies based in Riyadh, Saudi Arabia55
- Employee relations outsourcing companies based in Barcelona, Spain54
- Employee relations outsourcing companies based in Bucharest, Romania53
- Employee relations outsourcing companies based in Stockholm, Sweden50
- Employee relations outsourcing companies based in Chicago, United States49
- Employee relations outsourcing companies based in Lyon, France49
- Employee relations outsourcing companies based in Austin, United States47
- Employee relations outsourcing companies based in Miami, United States47
- Employee relations outsourcing companies based in San Diego, United States47
- Employee relations outsourcing companies based in Manchester, United Kingdom46
- Employee relations outsourcing companies based in Porto Alegre, Brazil46
- Employee relations outsourcing companies based in Guatemala, Guatemala45
- Employee relations outsourcing companies based in Auckland, New Zealand44
- Employee relations outsourcing companies based in Brisbane, Australia44
- Employee relations outsourcing companies based in Monterrey, Mexico43
- Employee relations outsourcing companies based in Roma, Italy42
- Employee relations outsourcing companies based in Campinas, Brazil41
- Employee relations outsourcing companies based in Dallas, United States41
- Employee relations outsourcing companies based in Vancouver, Canada41
- Employee relations outsourcing companies based in San Francisco, United States39
- Employee relations outsourcing companies based in Berlin, Germany38
- Employee relations outsourcing companies based in Casablanca, Morocco36
- Employee relations outsourcing companies based in Denver, United States35
- Employee relations outsourcing companies based in Calgary, Canada34
- Employee relations outsourcing companies based in Las Condes, Chile34
- Employee relations outsourcing companies based in Perth, Australia34
- Employee relations outsourcing companies based in Phoenix, United States34
- Employee relations outsourcing companies based in Tampa, United States33
- Employee relations outsourcing companies based in Warsaw, Poland33
- Employee relations outsourcing companies based in Dublin, Ireland32
- Employee relations outsourcing companies based in Charlotte, United States31
- Employee relations outsourcing companies based in Washington, United States31
- Employee relations outsourcing companies based in Lisboa, Portugal30
- Employee relations outsourcing companies based in Montevideo, Uruguay29
- Employee relations outsourcing companies based in Orlando, United States29
- Employee relations outsourcing companies based in Boston, United States28
- Employee relations outsourcing companies based in San Antonio, United States28
- Employee relations outsourcing companies based in Edmonton, Canada27
- Employee relations outsourcing companies based in Budapest, Hungary26
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 employee relations outsourcing companies, 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 employee relations outsourcing companies are there worldwide?
RevenueBase identified 31,225 employee relations outsourcing companies worldwide 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?
ADP, headquartered in Roseland, tops this list with the largest team on record.
Which country has the most employee relations outsourcing companies?
India leads with 4,258 companies, followed by the United States (3,857) and Brazil (2,116). Every employee relations outsourcing companies list by country and city is linked on this page.
Which city has the most employee relations outsourcing companies?
Sao Paulo leads with 435 headquartered companies, followed by London (361) and Mumbai (352).
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 101,811 verified decision-maker contacts tracked across these 31,225 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.