Company lists · Data refreshed September 2026
Top 25 Peo and employer services worldwide
RevenueBase identified 10,756 peo and employer services worldwide as of September 2026 and tracks 279,627 professional contacts across them, including 86,157 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers peo and employer services 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 29, 2026. Country and city lists for peo and employer services 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 peo and employer services 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 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 17,911 contacts → | ||||
Indirect evidence “As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 13,063 contacts → | ||||
Indirect evidence “At Sage, we knock down barriers with information, insights, and tools to help your business flow.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 4,761 contacts → | ||||
Indirect evidence “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,543 contacts → | ||||
Indirect evidence “Gusto has been growing the small business economy for 15+ years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,734 contacts → | ||||
Indirect evidence “At Alight | NGA Human Resources our mission is to make HR work better.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,561 contacts → | ||||
Indirect evidence “SD Worx is your HR, Pay and Time partner in Europe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,057 contacts → | ||||
Indirect evidence “Un software de recursos humanos para atender todas las necesidades de tus colaboradores.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,855 contacts → | ||||
Indirect evidence “Sopra HR Software, leader en solutions et services pour la paie et les RH, répond aux enjeux des Directions des Ressources Humaines des organisations de moyennes et grandes…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,591 contacts → | ||||
Strong 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,554 contacts → | ||||
Indirect evidence “Justworks takes the busyness out of growing a business and alleviates the unknown.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,465 contacts → | ||||
Indirect evidence “Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,275 contacts → | ||||
Indirect evidence “With buzzworks, find the right people with the right skills at the right time.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,075 contacts → | ||||
Partial evidence “Peninsula is the worldwide leader and most trusted provider of employment law, HR and health & safety services, supporting over small businesses in the U.K.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,025 contacts → | ||||
Indirect evidence “TASC Outsourcing is a leading people solutions partner in the GCC, working at the intersection of technology, process, and people to help organisations build agile, compliant, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,012 contacts → | ||||
Indirect evidence “AKAL Information Systems Ltd is a leading software and business services company with over 25 years of experience, dedicated to transform Indian Human Resource landscape through…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 988 contacts → | ||||
Indirect evidence “Simplify work life.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 874 contacts → | ||||
Indirect evidence “At Human Quality, we are known as a leading provider of Human Resources solutions that connect top talent with companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 841 contacts → | ||||
Indirect evidence “Labournet – your strategic partner in simplifying human resource management.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 840 contacts → | ||||
Indirect evidence “Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 828 contacts → | ||||
Strong evidence “Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Source: RevenueBase Database · checked Sep 29, 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: peo and employer services. 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 peo and employer services.
- Partial evidence
- Its own public description names part of peo and employer services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name peo and employer services. 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 10,756 peo and employer services worldwide
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Peo and employer services worldwide at a glance
As of Sep 29, 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 peo and employer services, 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 peo and employer services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “peo and employer services”. 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 peo and employer services), 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 peo and employer services, 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, 86,157 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Peo and employer services by location
55 lists · largest firstEvery Peo and employer services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Peo and employer services based in the United States3,182
- Peo and employer services based in India1,013
- Peo and employer services based in France538
- Peo and employer services based in the United Kingdom502
- Peo and employer services based in Brazil382
- Peo and employer services based in the Netherlands277
- Peo and employer services based in South Africa259
- Peo and employer services based in Canada226
- Peo and employer services based in Italy205
- Peo and employer services based in Mexico199
- Peo and employer services based in Australia195
- Peo and employer services based in Germany106
- Peo and employer services based in Poland91
- Peo and employer services based in Egypt90
- Peo and employer services based in Chile85
- Peo and employer services based in Belgium84
- Peo and employer services based in Colombia84
- Peo and employer services based in Nigeria80
- Peo and employer services based in the United Arab Emirates72
- Peo and employer services based in Switzerland68
- Peo and employer services based in Spain56
- Peo and employer services based in Sweden52
- Peo and employer services based in Malaysia51
- Peo and employer services based in the Philippines50
- Peo and employer services based in Romania45
- Peo and employer services based in Singapore43
- Peo and employer services based in Türkiye39
- Peo and employer services based in Ireland35
Cities
- Peo and employer services based in Sao Paulo, Brazil106
- Peo and employer services based in Mumbai, India90
- Peo and employer services based in London, United Kingdom86
- Peo and employer services based in New Delhi, India75
- Peo and employer services based in Chennai, India65
- Peo and employer services based in Houston, United States59
- Peo and employer services based in Bangalore, India54
- Peo and employer services based in New York, United States54
- Peo and employer services based in Paris, France54
- Peo and employer services based in Johannesburg, South Africa52
- Peo and employer services based in Dubai, United Arab Emirates51
- Peo and employer services based in Atlanta, United States46
- Peo and employer services based in Pune, India44
- Peo and employer services based in Bengaluru, India43
- Peo and employer services based in Tampa, United States42
- Peo and employer services based in Toronto, Canada38
- Peo and employer services based in Miami, United States37
- Peo and employer services based in Singapore, Singapore37
- Peo and employer services based in Los Angeles, United States35
- Peo and employer services based in Melbourne, Australia35
- Peo and employer services based in Denver, United States33
- Peo and employer services based in Gurgaon, India33
- Peo and employer services based in Phoenix, United States33
- Peo and employer services based in San Diego, United States31
- Peo and employer services based in Sydney, Australia31
- Peo and employer services based in Chicago, United States27
- Peo and employer services based in San Antonio, United States27
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 peo and employer services, 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 peo and employer services are there worldwide?
RevenueBase identified 10,756 peo and employer services 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 peo and employer services?
The United States leads with 3,182 companies, followed by India (1,013) and France (538). Every peo and employer services list by country and city is linked on this page.
Which city has the most peo and employer services?
Sao Paulo leads with 106 headquartered companies, followed by London (91) and Mumbai (90).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 86,157 verified decision-maker contacts tracked across these 10,756 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.