> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/industries/human-resources/ # Human resources: companies and the tools they run This group covers firms that provide HR outsourcing, payroll, benefits administration and workforce management services. Browse the organizations, the technology they run and how big they are. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Human resources firms include House of HR, Randstad India, Randstad, The Adecco Group and Senior Living Chaplains. Below are the tools they run most often, how they spread by size and how to reach heads of HR, practice leaders and operations directors. ## What counts as human resources? This group covers firms that provide HR outsourcing, payroll, benefits administration and workforce management services. ## Which human resources firms are listed here? They include House of HR, Randstad India, Randstad, The Adecco Group and Senior Living Chaplains. The table lists a selection of larger ones in alphabetical order; names link to company profiles. | Company | Size | Tools detected | | --- | --- | --- | | Adcorp Group | 2,000 to 5,000 | 18 | | [Alight](https://enrich.chat/company/alight/) | 10,000 to 25,000 | 63 | | AMS | 5,000 to 10,000 | 30 | | Anywr | 2,000 to 5,000 | 23 | | BoydHR | 10,000 to 25,000 | 4 | | Deel | 5,000 to 10,000 | 58 | | Ferchau | 10,000 to 25,000 | 4 | | Groupe actual | 5,000 to 10,000 | 14 | | [House of HR](https://enrich.chat/company/house-of-hr/) | 50,000 to 100,000 | 14 | | [HR Rail](https://enrich.chat/company/hr-rail/) | 10,000 to 25,000 | 5 | | Jovem Aprendiz | 5,000 to 10,000 | 9 | | Lean Human Capital powered by RogueHire | 5,000 to 10,000 | 16 | | Manpower France | 2,000 to 5,000 | 34 | | Mastters.com | 10,000 to 25,000 | 3 | | MINE | 5,000 to 10,000 | 15 | | [Na volné noze](https://enrich.chat/company/na-voln-noze/) | 10,000 to 25,000 | 5 | | Nowa Praca | 5,000 to 10,000 | 11 | | [Paychex](https://enrich.chat/company/paychex/) | 10,000 to 25,000 | 64 | | Persolkelly | 2,000 to 5,000 | 6 | | Persona Service | 5,000 to 10,000 | 5 | | [Randstad](https://enrich.chat/company/randstad/) | 50,000 to 100,000 | 44 | | Randstad Enterprise | 2,000 to 5,000 | 67 | | [Randstad India](https://enrich.chat/company/randstad-india/) | 50,000 to 100,000 | 32 | | [Senior Living Chaplains](https://enrich.chat/company/senior-living-chaplains/) | 25,000 to 50,000 | 7 | | Synergie | 5,000 to 10,000 | 15 | | [The Adecco Group](https://enrich.chat/company/the-adecco-group/) | 25,000 to 50,000 | 36 | | Trinet | 2,000 to 5,000 | 82 | | [Work From Home/ Fresher & Experience Jobs](https://enrich.chat/company/work-from-home-fresher-and-experience-jobs/) | 10,000 to 25,000 | 9 | | Work From Home/Fresher Jobs - Remote Work | 5,000 to 10,000 | 4 | | Workana | 2,000 to 5,000 | 47 | ## What technology do human resources firms use? These tools stand out among human resources firms: each is detected more often here than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools that stand out among human resources firms.** Bars for the share of listed human resources firms where each tool was detected, with a tick for the share across all listed organizations: Pardot (Account Engagement) 20% against 10%, Optimizely 17% against 4%, SendGrid 17% against 9%, Crazy Egg 14% against 7%, Dropbox 14% against 3%, Decibel Insight 12% against 1%. *Share of listed human resources firms where each tool was detected. The tick marks the share across all listed organizations.* ## How big are human resources firms? The columns show how the listed human resources firms spread across six size ranges. **Figure: Size of human resources firms.** Six columns for the share of listed human resources firms in each size range from 2,000 to over 100,000 employees: 2-5K 65%, 5-10K 15%, 10-25K 12%, 25-50K 3%, 50-100K 5%, 100K+ 0%. *Share of listed human resources firms in each size range.* ## Human resources by tool Open a tool to see the human resources firms that use it. [Google Tag Manager](https://enrich.chat/companies-using/google-tag-manager/human-resources/) ## How do you reach heads of HR, practice leaders and operations directors at human resources firms? Pick an organization from the table, then ask your AI agent for the people in the roles you sell to. ```text Use www.enrich.chat to find heads of HR, practice leaders and operations directors at [company], with titles and verified work emails ``` ## Frequently asked questions ### Which human resources firms are there? Human resources firms include House of HR, Randstad India, Randstad, The Adecco Group and Senior Living Chaplains. The page lists a selection of larger ones with links to their profiles. ### What technology do human resources firms use most? Human resources firms are most often detected running Pardot (Account Engagement), Optimizely, SendGrid and Crazy Egg. ### How big are human resources firms? Listed human resources firms range from about 2,000 employees to well over 100,000. The columns on this page show the spread. ### Who do you sell to in human resources? Usually heads of HR, practice leaders and operations directors. Ask your AI agent to use www.enrich.chat to find them with verified work emails. ## Try this prompt Find heads of HR, practice leaders and operations directors ```text Use www.enrich.chat to find heads of HR, practice leaders and operations directors at [company], with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Information technology and services](https://enrich.chat/industries/information-technology-and-services/) - [Hospitals and health care](https://enrich.chat/industries/hospitals-and-health-care/) - [Retail](https://enrich.chat/industries/retail/) - [Higher education](https://enrich.chat/industries/higher-education/) - [Government administration](https://enrich.chat/industries/government-administration/) - [Financial services](https://enrich.chat/industries/financial-services/) - [Banking](https://enrich.chat/industries/banking/) - [Insurance](https://enrich.chat/industries/insurance/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)