These Human Resources Services companies in the United States primarily offer solutions for HR, payroll, benefits, and workforce management. The companies listed are generally large firms, with the largest having 187,000 employees. Many were founded in the late 20th or early 21st century.
ADP focuses on improving workplace experiences through advanced HR products and services. Paychex provides HR, payroll, and benefits solutions for businesses, while Alight Solutions offers cloud-based human capital technology and services. Remote and Deel both provide comprehensive HR and payroll platforms for global workforces, with Remote focusing on hiring, managing, and paying employees worldwide, and Deel offering tools for international workforce management. Insperity provides comprehensive HR solutions for businesses. A common pattern is the concentration of headquarters in California, with San Francisco and Folsom hosting several companies.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 187,000 | ||||
| 2 | 25,394 | ||||
| 3 |
Paychexpaychex.com
Leading provider of HR, payroll, and benefits solutions for businesses in the US and Europe, serving over 740,000 clients and 22M worksite employees |
18,530 | |||
| 4 |
Alight Solutionsalight.com
Leading cloud-based human capital technology and services provider for global organizations, administering employee benefits and empowering workforce decisions and engagement. |
15,000 | |||
| 5 |
Remoteremote.com
Comprehensive HR and payroll platform enabling companies to hire, manage, and pay employees worldwide with compliance and local expertise. |
12,042 | |||
| 6 | 9,873 | ||||
| 7 |
Insperityinsperity.com
A provider of comprehensive HR solutions since 1986, enabling businesses to thrive with reduced liabilities, better benefits, and administrative relief |
5,053 | |||
| 8 |
Government Support Jobsgovernmentsupportjobs.com
Innovative career service specializing in government support jobs, connecting job seekers and employers in the public sector through technology |
4,813 | |||
| 9 |
TriNettrinet.com
A provider of full-service HR solutions tailored for small and medium-size businesses, offering expertise in human capital, benefits, compliance, payroll, and technology |
4,611 | |||
| 10 |
Magnit Globalmagnitglobal.com
Global leader in contingent workforce management, offering an Integrated Workforce Management platform for optimizing talent, diversity, operational, and financial success |
3,927 | |||
| 11 |
Vensure Employer Solutionsvensure.com
A professional employer organization offering comprehensive services in payroll, HR, benefits, risk management, and workers' compensation utilizing industry-leading technology |
3,292 | |||
| 12 |
HireRighthireright.com
Global provider of background checks, drug testing, and employment verification services through an innovative platform, tailored to meet the unique needs of organizations worldwide |
3,283 | |||
| 13 | 3,037 | ||||
| 14 |
State of Idahodhr.idaho.gov
A central human resources agency in Idaho providing consultation on recruitment, compensation, employee relations, classification, and HR management issues |
2,636 | |||
| 15 |
Apec - Association Pour l'Emploi des Cadresapec.fr
Supports professionals, young graduates throughout career paths, offers recruitment optimization services for companies, provides market analysis on cadre employment trends. |
2,482 | |||
| 16 | 2,413 | ||||
| 17 |
Atlas HXMatlashxm.com
Global talent management software and solutions provider for companies expanding internationally, offering Direct Employer of Record services in 160+ countries |
2,161 | |||
| 18 |
DDI | Development Dimensions Internationalddiworld.com
Global leadership consulting firm assisting organizations with hiring, promotion, and development of exceptional leaders from first-time managers to senior C-suite executive levels. |
2,120 | |||
| 19 |
Pride Globalprideglobal.com
An integrated human capital solutions firm with diverse HR services globally and a focus on treating stakeholders exceptionally |
2,019 | |||
| 20 |
USAJOBSusajobs.gov
The company maintains social media accounts to communicate with the public, providing information and guidelines to ensure respectful interaction |
2,010 | |||
| 21 |
BambooHRbamboohr.com
Leading HR software provider catering to small and medium businesses, helping manage employee information and freeing HR to be more strategic |
1,902 | |||
| 22 | 1,899 | ||||
| 23 |
Accurate Backgroundaccurate.com
Global provider of employment background screening and workforce monitoring services, ensuring smarter hiring decisions with comprehensive technology, extensive coverage, and intuitive compliance tools |
1,899 | |||
| 24 |
O.C. Tanneroctanner.com
Provides an employee recognition platform combining software, awards, and experiences to improve workplace culture and employee engagement globally. |
1,765 | |||
| 25 |
Cielo Talentcielotalent.com
Global partner providing innovative talent acquisition strategies and recruitment process outsourcing solutions to help companies secure top talent worldwide. |
1,727 | |||
| 26 |
Safeguard Globalsafeguardglobal.com
Building adaptive solutions for global organizations in workforce management, recruitment, payroll, onboarding, and more to enable smarter and efficient operations |
1,718 | |||
| 27 |
Hospital Pharmacist Jobshospitalpharmacistjobs.com
HPJ specializes in providing top-notch pharmacy professionals, carefully screening and evaluating candidates before referring them to clients Expert recruiters match ideal candidates to specific needs |
1,679 | |||
| 28 |
OptimHireoptimhire.com
Facilitating global collaboration, OptimHire revolutionizes the way professionals, recruiters, and companies work together anytime, anywhere across time zones and countries |
1,673 | |||
| 29 |
Justworksjustworks.com
Platform providing payroll, HR tools, compliance support, and corporate-level benefits with 24/7 customer service for growing businesses. |
1,623 | |||
| 30 |
Servicios Profesionales
Provider of professional services offering a range of solutions to meet clients' needs |
1,600 | |||
| 31 |
Businessolverbusinessolver.com
Technology company providing a personalized platform for benefits administration, enhancing employee experience, informed decisions, and cost control. |
1,572 | |||
| 32 |
Part Time Jobs Baseparttimebase.co
The company helps individuals find part-time jobs and work from home opportunities in the United States |
1,569 | |||
| 33 | 1,567 | ||||
| 34 |
Pontoon Solutionspontoonsolutions.com
Simplify and optimize contingent workforce management using technology and expertise, delivering MSP, procurement, and talent advisory globally. |
1,517 | |||
| 35 |
Wilsonwilsonhr.com
Global leader in total talent solutions with a focus on Recruitment Process Outsourcing, executive search, contingent talent solutions, and technology advisory across 65+ countries |
1,483 | |||
| 36 |
Graebel Companies, Inc.graebel.com
Global talent mobility solutions provider, specializing in relocation services for leading brands in 165 countries Focus on people-first mobility and custom technology solutions |
1,463 | |||
| 37 |
Randstad RiseSmartrandstadrisesmart.com
A leading specialist in worklife coaching and career transitions, offering support for individuals and businesses in optimizing worklife experiences |
1,375 | |||
| 38 |
Arkansas Department of Human Serviceshumanservices.arkansas.gov
Arkansas' largest state agency with 7,400+ employees in 75 counties, dedicated to ensuring citizens of all ages have a high quality of life |
1,288 | |||
| 39 |
Multiplierusemultiplier.com
Global employment platform simplifying international team management by handling compliance, contracts, payroll, benefits, and taxes, allowing companies to focus on their distributed teams effortlessly |
1,266 | |||
| 40 |
Mineral, part of Mitratechtrustmineral.com
Provides proactive HR and compliance solutions, combining data, technology, and human expertise for growing businesses. A leading HR community in the U.S. |
1,224 | |||
| 41 |
Hacking HRhackinghrlab.io
Global learning community for business leaders and practitioners focusing on technology, workplace innovation, and professional collaboration to improve organizational performance and employee experiences. |
1,208 | |||
| 42 |
HUMAN RESOURCESacademyofpublicpolicies.org
Provides human resource management services for organizations, including compliance, employee benefits, talent acquisition, and off-boarding procedures |
1,147 | |||
| 43 | 1,118 | ||||
| 44 |
Empyreangoempyrean.com
A technology SaaS company empowering organizations with innovative technology and a service-first approach to accelerate benefits and employee retention strategies |
1,092 | |||
| 45 |
Oasispaychex.com
Professional Employer Organization providing HR administration, employee benefits, payroll services, workers' comp, and more to small and medium-sized businesses |
1,076 | |||
| 46 |
Talogytalogy.com
Experts in talent management crafting solutions for screening, selecting, developing, and engaging talent worldwide using psychology and technology for data-driven decisions |
1,036 | |||
| 47 |
Workhumanworkhuman.com
This company is dedicated to creating human workplaces by providing HR solutions to help organizations build connections and drive ROI |
1,008 | |||
| 48 | 995 | ||||
| 49 | 967 | ||||
| 50 | 957 | ||||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 51 |
People2.0people20.com
Specializing in global employer and agent of record services for talent procurement, supporting companies in managing their workforce seamlessly |
931 | |||
| 52 |
Benefitfocusbenefitfocus.com
This company improves lives by simplifying benefit programs through innovative technology, focusing on health, engagement, and better outcomes for organizations and individuals |
924 | |||
| 53 |
OneSource Virtualonesourcevirtual.com
OneSource Virtual offers co-sourced HR, Finance, and Accounting solutions for Workday customers across North America and EMEA, with a focus on growth and expertise |
923 | |||
| 54 | 913 | ||||
| 55 |
DISA Global Solutions, Inc.disa.com
Provider of full-service employee screening solutions since 1987 with a focus on workplace safety Services include drug testing, background screening, occupational medicine, safety training, and transportation compliance |
905 | |||
| 56 |
G&A Partnersgnapartners.com
Providing expert HR and administrative services, implementing efficient processes, reducing costs, and supporting businesses with certified professionals. |
867 | |||
| 57 |
HRSG - Innovative Business Solutionshrsgonline.com
Providing global business solutions including leadership selection, team management, HR outsourcing, consulting, and training to optimize clients' workforce and operations. |
862 | |||
| 58 |
Partnaire Francepartnaire.fr
Provides extensive staffing solutions across France with over 238 locations and 59,000 employees in permanent, temporary, and contract roles. |
837 | |||
| 59 |
Freshers jobtheelitejob.com
This company offers HR consultancy, staffing services, business consulting, and freelance jobs to support organizations and individuals in various industries |
818 | |||
| 60 |
Automatic Data Processingadp.com
Global provider of cloud-based HCM solutions including HR, payroll, talent, and benefits administration Specializes in decision support technology customization for companies |
793 | |||
| 61 |
Veterinary Jobs Marketplace®veterinaryjobsmarketplace.com
A veterinary job marketplace that helps clinics and pharmaceutical companies find talented veterinarians, technicians, and nurses through targeted messaging and social media outreach |
784 | |||
| 62 |
Cisivecisive.com
A leader in background screening, monitoring, and talent program optimization for highly regulated industries, prioritizing safety and success with high standards |
775 | |||
| 63 |
Virginia Employment Commissionvec.virginia.gov
The company promotes economic growth by providing workforce services such as policy development, job placement, and training, while collaborating with stakeholders and embracing innovation |
744 | |||
| 64 |
RCI Recruitment Solutionsrciars.com
This company provides talent acquisition and management services, offering consulting and hands-on support to improve recruitment processes for organizations |
740 | |||
| 65 |
Talent Solutions TAPFINtapfin.com
Industry-leading provider of Managed Services, enabling organizations to analyze and manage external talent globally through an integrated approach Visit website for more information |
730 | |||
| 66 |
LifeCarelifecare.com
LifeCare offers employer-sponsored work-life benefits and online discount shopping, serving Fortune 500 companies and federal government branches nationwide |
721 | |||
| 67 |
Marketplace Chaplainsmchapusa.com
Marketplace Chaplains provides personalized mental health care services through a diverse team of chaplains for employees and their families, promoting well-being and productivity in the workplace |
718 | |||
| 68 |
nopelinkedin.com
An RPO and paid-search firm partnering with clients to hire talent committed to making a positive impact, focusing on seamless candidate experience |
706 | |||
| 69 |
BASICbasiconline.com
Provider of integrated HR solutions for employers nationwide since 1989 Specializing in payroll, compliance, benefits administration, and healthcare reform updates |
705 | |||
| 70 |
Job Centerjobcentermichigan.com
A family-owned staffing company serving Metro Detroit and surrounding areas since 1983, specializing in temporary-to-hire placements |
703 | |||
| 71 |
Asure Softwareasuresoftware.com
This company provides Human Capital Management solutions for small and mid-sized businesses to help with payroll, HR, compliance, and time & attendance |
684 | |||
| 72 |
Awardcoawardco.com
This company offers a total rewards platform that boosts productivity, reduces spend, and builds culture through value-driven recognition and rewards |
678 | |||
| 73 |
cFIRST Background Checks LLPcfirst.io
A global background screening service provider with a focus on compliance, verification, and monitoring, offering innovative solutions for efficient hiring processes |
653 | |||
| 74 |
CoAdvantagecoadvantage.com
The company specializes in payroll processing, benefit administration, risk management, and employee development to help small businesses optimize HR practices and foster growth |
641 | |||
| 75 |
Association for Talent Development (ATD)td.org
Global association supporting talent development professionals worldwide through networking, resources, and events in industries across 120+ countries |
621 | |||
| 76 |
Pakistan Jobswebojobs.pk
A job search platform in Pakistan connecting recruiters with qualified candidates for high tech jobs, offering free tools and hiring support |
610 | |||
| 77 |
Idaho Department of Laborlabor.idaho.gov
This organization provides comprehensive services to connect job seekers with employment opportunities and support workers through career transitions while administering state labor laws |
596 | |||
| 78 |
Oyster®oysterhr.com
This company facilitates global hiring, enabling companies to easily recruit talent from anywhere, striving for a more inclusive and equal world |
595 | |||
| 79 |
IMPACT Groupimpactgrouphr.com
Specializing in career transitions, relocation support, and outplacement services, we empower employees with the tools they need to succeed in their careers |
579 | |||
| 80 |
Challenger, Gray & Christmas, Inc.challengergray.com
A global leader in high-quality outplacement services, offering personalized coaching and support to individuals transitioning in various industries worldwide |
578 | |||
| 81 |
NutritionJobsnutritionjobs.com
An online career center connecting Registered Dietitians and nutrition professionals with job opportunities, resume posting, and career courses since 2000 |
568 | |||
| 82 |
USA Work Visa Sponsorship Jobslinktr.ee
A curated job portal specializing in professional and no skills jobs with USA Visa Sponsorship opportunities Email admin@work-visa-usa-jobscom for inquiries |
567 | |||
| 83 |
Department of the Navy Office of Civilian Human Resources (OCHR)secnav.navy.mil
Supporting the Department of the Navy, the Office of Civilian Human Resources ensures proper staffing and development for over 195,000 civilian employees |
566 | |||
| 84 |
Weichert Workforce Mobilityweichertworkforcemobility.com
A global relocation company providing end-to-end mobility solutions with personalized service, deep industry expertise, and comprehensive in-house capabilities since 1969 |
563 | |||
| 85 |
PAE Globalarchlatam.com
A company that provides efficient and professional resources to meet client needs, focusing on customer satisfaction through personalized assistance and service |
559 | |||
| 86 |
Virtual Latinosvirtuallatinos.com
A platform connecting entrepreneurs and agencies in the US and Canada with virtual assistants and professionals from Latin America |
558 | |||
| 87 |
Careermindscareerminds.com
This company offers outplacement, executive coaching, and career development services globally in multiple languages using technology and personalized coaching |
552 | |||
| 88 |
#ONO (Open to New Opportunities)
Provides guidance on leveraging LinkedIn's #ONO and #OpenToWork features to increase search visibility and attract recruiters, emphasizing value demonstration and proper application for optimal results. |
549 | |||
| 89 |
Altair Globalaltairglobal.com
Global relocation management company with sophisticated technology, delivering exceptional mobility experiences worldwide through full-service assignment and relocation services since 1989 |
549 | |||
| 90 |
All jobsalljobs.ai
An AI-driven recruitment marketing platform that efficiently publishes job postings to Google for Jobs and attracts high-quality candidates quickly |
549 | |||
| 91 |
SSPsemistaffing.com
SSP is a dedicated firm specializing in sourcing top talent for industry leaders, both domestically and internationally, driving client growth |
537 | |||
| 92 |
Jewelry and Candlesjewelryincandles.com
This company offers candles with hidden jewelry inside, made from 100% natural soy wax and premium fragrances for a unique scent experience |
534 | |||
| 93 |
Group Management Services, Inc.groupmgmt.com
A comprehensive HR solutions provider offering payroll, HR, risk management, and benefits services to businesses across the US, focusing on compliance and protection |
531 | |||
| 94 |
شركة معين للموارد البشرية | Mueen Human Resources Companymueen.com.sa
A Saudi HR company providing recruitment services in various fields, emphasizing on professionalism, training, and customer satisfaction to meet labor market needs |
531 | |||
| 95 |
Wellness Coachwellnesscoach.live
A digital wellness platform offering personalized preventative care, coaching sessions, diverse content, group sessions, progress tracking tools, and AI solutions for healthier lifestyles |
514 | |||
| 96 |
Actively Seeking Employment.medium.com
A company seeking employment opportunities, offering to share resumes upon request Ready to hear from potential employers Thank you |
511 | |||
| 97 |
TCWGlobaltcwglobal.com
Global provider of solutions for expanding national and global teams, specializing in contingent workforce management, compliance, staffing, and international employment services |
501 | |||
| 98 |
ManpowerGroup Colombiamanpowergroupcolombia.co
Global leader in innovative human capital solutions with over 70 years of experience Providing dignified employment opportunities, training millions of individuals, and advising on labor market policies |
476 | |||
| 99 |
Segal Consultingsegalco.com
A trusted consulting firm with actuarial roots, offering guidance in health benefits, HR, technology, investments, and more for organizations impacting society |
465 | |||
| 100 |
Engage PEOengagepeo.com
A national HR solutions provider offering expert services, insurance products, payroll technology, risk management, and advanced technology for small to medium-sized businesses |
438 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.
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The same list elsewhere in United States
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