Staffing & Recruiting

Employment Services (NAICS 5613) covers temporary-staffing, professional-employer organizations (PEO), executive search, and recruitment-process outsourcing (RPO). Major staffing firms include ManpowerGroup (NYSE: MAN, the largest US staffing company), Adecco (Swiss, the largest globally), Randstad (Dutch), Kelly Services, Robert Half International (NYSE: RHI, the largest professional-staffing firm focusing on accounting and finance), Insperity (PEO), Aerotek (Allegis Group), and the executive-search firms (Heidrick & Struggles, Korn Ferry, Russell Reynolds, Spencer Stuart, Egon Zehnder). The job-boards and recruiting-platform segment is dominated by LinkedIn (Microsoft, ~1 billion users globally), Indeed (Recruit Holdings), ZipRecruiter, Glassdoor, Monster, and the rapidly-growing AI-native platforms — Mercor, Eightfold AI, HireVue, Greenhouse with AI features, Lever with AI, and the YC-backed AI-recruiting startups. Combined US staffing-and-recruiting industry revenue exceeds $200 billion annually with industry employment around 2.5 million (including temp workers placed).

AI is reshaping every layer of recruiting. Candidate sourcing AI (LinkedIn Recruiter with AI-suggested matches, hireEZ, SeekOut, Eightfold) finds candidates from passive-talent databases. Resume-screening AI processes inbound applications against job-description requirements. Interview AI ranges from one-way video interviews (HireVue, Spark Hire) with computer-vision-and-voice analysis to AI-augmented live interviews. Mercor has emerged as a leader in AI-native expert-talent-marketplaces — the company places contractors with AI labs and Big Tech firms via AI-augmented interviewing. Skill-assessment AI (CodeSignal, HackerRank with AI features) tests technical skills. Background-check AI (Checkr, GoodHire) accelerates the verification process. Compensation-benchmarking AI (Pave, Levels.fyi, Salary.com) provides real-time market data. The biggest AI-driven shift is in technical-talent recruiting — engineering and AI-research recruiters increasingly rely on AI-augmented sourcing and Mercor-style AI-marketplace models. Generative AI is also widely used for job-description writing, candidate outreach personalization, and interview-question generation.

Recruiting and staffing employs over 1 million people in the US. Recruiter and sourcing-specialist roles are the most-heavily-AI-augmented role categories — top-performing recruiters now manage 5-10x the candidate volume that pre-AI workflows allowed. Lower-tier sourcing and resume-screening roles face direct AI displacement — the major staffing firms have actively reduced these roles. Account-manager and client-relationship roles are stable due to the relationship-driven nature of staffing-firm-to-client engagement. Background-check and verification roles face direct AI displacement. Executive-search consultant roles remain insulated by the relationship and judgment value at the high end. Generic temp-placement roles are being reshaped by AI-marketplace models. New roles: AI-recruiting platform engineer, candidate-experience-AI designer, recruiting-AI-ethics specialist, prompt-engineering-for-talent-acquisition. The Mercor-style AI-native talent marketplaces represent a structural disruption to traditional staffing — they're currently small in absolute terms but growing rapidly in elite technical-talent niches.