Staffing Agency

A staffing agency is a firm that recruits, vets, and places workers with client firms on temporary or permanent terms. For temp roles it stays the legal employer, so it runs payroll, taxes, benefits, and compliance. Speed and flexibility are the draw.

The model is older than it looks. Manpower opened in Milwaukee in 1948, and the American Staffing Association reports that US staffing firms hire more than 14 million temporary and contract workers each year across its member network.

Clients turn to a staffing agency when the internal HR team is too small, too slow, or too specialised for the role at hand. The agency owns the pipeline, the screening, and the paperwork, so the client just approves the shortlist and starts the work.

Key takeaways

• A staffing agency sources workers and, for temporary placements, stays their legal employer of record.
• Three common tiers: temp, temp-to-hire, and direct-hire, each priced differently.
• Markup on temp workers typically runs 25% to 100% of bill rate; direct-hire fees usually sit at 15% to 25% of first-year salary.
• Best fit for seasonal spikes, hard-to-fill roles, and companies scaling faster than their HR bandwidth allows.

How it works

A staffing agency runs a four-step loop: intake, sourcing, placement, and payroll. The client sends a job order with role, pay band, and start date. The agency sources and screens candidates, then the winning hire starts within days rather than weeks.

For temporary and contract placements, the agency remains the legal employer. It runs payroll, withholds taxes, covers workers’ comp, and administers any benefits.

The client pays a bill rate that bundles the worker’s pay plus the agency’s markup, which the Staffing Industry Analysts tracks at roughly 25% to 100% of the pay rate depending on skill level and geography.

Direct-hire works differently. The agency finds the candidate, the client hires them outright, and the agency invoices a one-time placement fee, typically 15% to 25% of the new hire’s first-year salary.

Temp-to-hire sits in the middle: the worker is on the agency’s payroll for a trial period, then converts to the client’s payroll if both sides agree.

Good agencies specialise. Some run general light-industrial and clerical desks — others target nursing, IT, legal, or executive roles. That specialisation is why one client can juggle three agencies at once for warehouse, developer, and finance hires.

Examples

Manpower Group, Adecco, and Randstad are the three largest staffing firms globally, with combined 2023 revenue above USD 70 billion per Staffing Industry Analysts. They cover clerical, light industrial, and professional roles across more than 60 countries.

In healthcare, AMN Healthcare and Cross Country Healthcare place travel nurses, allied health workers, and locum physicians into US hospitals, a segment that grew sharply during the 2020–2022 nursing shortage and still runs above pre-pandemic volume.

Robert Half is the anchor name in accounting, finance, and legal support. Kforce and Insight Global lead the US IT staffing bracket, feeding developers, project managers, and cyber analysts into enterprise builds.

In the Philippines, firms like ManpowerGroup Philippines and John Clements Consultants place local workers into shared-services and BPO roles.

Then there’s the gig-adjacent tier: Upshift, Instawork, and Wonolo, which use apps to match hourly workers to same-day shifts in warehousing, hospitality, and events. They’re staffing agencies in every legal sense, just running on a mobile stack instead of a phone bank.

Related terms

• Recruitment: the broader hiring function; a staffing agency is one channel a recruiter uses.
• Employer of record (EOR): handles legal employment across borders, similar in structure but built for full-time international hires.
• Staff leasing: a longer-term co-employment model, common in the Philippines BPO scene.
• Talent acquisition: the strategic in-house hiring function that may commission a staffing agency.
• Business process outsourcing (BPO): outsources the whole process, whereas a staffing agency only outsources the people.
• Outsourcing: the umbrella term staffing sits under.
• HR: the internal function a staffing agency plugs into or supplements.
• Knowledge process outsourcing (KPO): outsourced high-skill knowledge work, sometimes staffed via agencies.

FAQ

How is a staffing agency different from a recruiter?

A staffing agency places workers and, for temp roles, employs them. A standalone recruiter usually only sources candidates and hands them off — no payroll, no employment relationship. There’s plenty of overlap, especially for direct-hire work.

What does a staffing agency charge?

For temporary placements, agencies charge a bill rate that includes the worker’s pay plus a markup of roughly 25% to 100%. For direct-hire, expect a one-time fee of 15% to 25% of the new hire’s first-year salary.

Volume and role difficulty push the number.

Is a staffing agency worth it for small businesses?

Often yes, especially if you don’t have a full HR function. You get vetted candidates fast, and for temps the agency handles payroll, workers’ comp, and tax filings — as this Wisestep piece on the advantages of working with a staffing agency lays out.

How long does it take to fill a role?

Light-industrial and clerical temp roles can start same-day. Skilled trades and admin usually fill in three to five business days. Direct-hire searches for specialist roles typically take four to eight weeks, per LinkedIn Global Talent Trends data.

Can I hire the temp worker permanently?

Yes — that’s the temp-to-hire model, and most agencies charge a conversion fee that shrinks the longer the worker has been on assignment, often waived entirely after 90 to 120 days.

Browse the Outsource Accelerator outsourcing hubs to compare staffing partners against full-service outsourcing providers.