When hiring picks up, most companies have three ways to fill roles: build their own recruiting team, call a staffing agency, or bring in a recruitment process outsourcing (RPO) partner. Each one works well in the right situation and costs more than it should in the wrong one.
Here’s how they differ.
- In-house recruiting: your own employees run every search. You have full control, and you carry the full cost of salaries, tools and job boards, whether you’re hiring or not.
- Staffing agency: an outside firm fills individual roles, usually for a fee per placement or an hourly markup on contractors. It’s quick to start and you only pay when someone is hired.
- Recruitment process outsourcing (RPO): a partner takes over all or part of your recruiting process and works as an extension of your team, usually under your brand and inside your systems.
Side by side
| In-house | Staffing agency | RPO | |
|---|---|---|---|
| Cost model | Salaries, benefits, tools and job boards, every month | Fee per placement or markup on contractors | Monthly management fee, per-hire fee, or project price |
| Control over process | Full | Low: the agency runs its own process | High: the partner follows your process and brand |
| Speed to start | Slow: you have to hire the recruiters first | Fast for single roles | Fast once set up, typically a few weeks |
| Industry expertise | Depends on who you hire | Varies widely between agencies | Specialized partners bring recruiters who know your field |
| Scaling up and down | Hard: adding or cutting recruiters takes months | Easy, role by role | Built in: the partner adds or removes recruiters as volume changes |
| Best for | Steady, predictable hiring | A few urgent or one-off roles | Ongoing or high-volume hiring, or a defined hiring project |
The biggest difference is ownership. An agency fills a role and moves on. An RPO partner takes responsibility for how your hiring runs, including the metrics, the candidate experience and the hiring managers’ time.
When each option fits
Choose in-house recruiting when you hire at a steady pace all year, the roles are similar, and you can keep a recruiter busy full time. You keep everything in house, but you carry the cost even in slow months.
Choose a staffing agency when you need a handful of roles filled quickly, or you need contractors for a short assignment. It’s simple and you pay only for results. The trade-off is less control, and costs add up fast if you use agencies for every role.
Choose RPO when you’re hiring at volume, entering a new market, opening a site, or filling specialized roles your team struggles to source. RPO also suits a defined project, such as staffing a clinical trial team or a product launch, where you need a dedicated team for a set period.
You don’t have to pick just one
Many companies combine models. A small in-house team might handle steady hiring while an RPO partner covers a growth spurt or a hard-to-fill department, and a staffing partner supplies contractors for short-term projects. The right mix depends on how much you’re hiring, how specialized the roles are, and how predictable demand will be over the next year.
Not sure which fits?
If RPO looks like the right fit, our guide to what to look for in an RPO partner covers the questions to ask before you sign.
Precision Talent Group provides recruitment process outsourcing and contract and permanent placement for life sciences, technology and healthcare companies. We can help you work out the right mix for your hiring plan. Talk to our team.