Guide. Last reviewed 3 November 2026
Staff augmentation or a recruitment agency?
Choose a recruitment agency when you want to hire someone to join your payroll. Choose staff augmentation when you need skilled people working inside your team now, without taking on a permanent hire. The difference lies in who employs the person, who manages the work and how you pay.
In this guide
- What is staff augmentation?
- What does a recruitment agency do?
- Staff augmentation vs recruitment agency: a comparison
- When is a recruitment agency the better choice?
- When does staff augmentation make more sense?
- How do the costs compare?
- What should you ask either supplier?
- Sources
- Staff augmentation and recruitment questions
What is staff augmentation?
Staff augmentation adds skilled people to your team for as long as you need them. They work on your projects, usually under your direction, while a provider handles finding them.
You decide the tasks and priorities. The provider sources, vets and supports the person. Who employs the person and the contract and notice terms depend on the provider, so ask for them in writing. Zemash agrees terms in writing before work starts.
What does a recruitment agency do?
A recruitment agency finds candidates for a role you want to fill. It usually works in one of two ways.
- Permanent placement. The agency introduces a candidate and you employ them. GOV.UK says an employee works under an employment contract, and the business controls the workload.
- Temporary supply. GOV.UK says you are an agency worker if you have a contract with an agency but work temporarily for a hirer.
Fees follow the model. The agency sets them in its terms of business. GOV.UK explains when an agency can charge a hirer a transfer fee if you later take on a temporary worker permanently.
Comparison
Staff augmentation vs recruitment agency: a comparison
The table sets out the main differences. The recruitment agency column describes a permanent placement unless it says otherwise.
| Question | Staff augmentation | Recruitment agency |
|---|---|---|
| What are you buying? | Skilled people working in your team for a period | A candidate to hire, or a temporary worker supplied for a period |
| Who employs the person? | Depends on the provider's model, so ask for the employer to be named in the contract | You, for a permanent hire. The agency, for a temporary worker. |
| Who manages the daily work? | You set tasks and priorities | You, once the person has started |
| How is it paid? | Usually a recurring fee for the period | A placement fee set in the agency's terms, or a charge for each hour of a temporary worker |
| How fast can it start? | Depends on the provider and the role | Depends on the agency and the market for the role |
| What if it does not work out? | Check the provider's replacement terms before you sign | Check the agency's rebate or replacement terms before you sign |
| Can you turn it into a permanent hire? | Ask about conversion terms at the start | Yes for a permanent placement. For temporary workers, transfer fee rules apply. |
| Best for | Projects, skills gaps, scaling a team up or down | A lasting role you want on your own payroll |
Fill rates and time to hire depend on the role and the market, so ask each supplier for evidence on roles like yours.
When is a recruitment agency the better choice?
A recruitment agency is the better choice when you want a permanent employee who becomes part of your company.
- The role is lasting and central to how you operate.
- You want the person on your payroll, with your benefits and your contract.
- You need someone in a specific place, such as a site or a shop floor.
- The role is senior and you want a search that reaches people who are not looking.
- You have the time to manage onboarding, probation and development.
If you are hiring several permanent staff, our recruitment process outsourcing service is another route.
When does staff augmentation make more sense?
Staff augmentation makes more sense when you need capacity or a skill quickly and want to keep control of the work.
- You have a project with a start and an end.
- You need a skill your team lacks, such as a particular developer role.
- Demand moves up and down, and you want to adjust team size without redundancies.
- You want to test a role before committing to a permanent hire.
- You want to avoid the cost and time of a full recruitment campaign.
If you need developers, see our hire dedicated developers page.
Check employment status in writing
Whatever route you choose, agree the status of the person at the start. GOV.UK warns that if employment status is wrong, the individual and employer may face unpaid tax, penalties or loss of benefits.
GOV.UK also notes that a worker is not the same as an employee. Agency workers have specific rights from the first day at work.
How do the costs compare?
The two routes charge in different ways, so compare the full cost over the same period, not the headline fee.
A recruitment agency usually charges once, when the person starts, or charges for each hour of a temporary worker. With a permanent hire you then carry salary, employer costs, benefits, equipment and management time.
Staff augmentation usually charges a recurring fee while the person works with you. Zemash does not publish prices. Pricing depends on scope, and we confirm it on a call.
- Placement fee. Ask what happens to it if the person leaves early.
- Recurring fee. Ask what it covers, such as equipment, software, supervision and cover for absence.
- Management time. A person you direct each day costs your own time as well as money.
- Exit cost. Ask about notice, replacement and conversion before you sign, not after.
None of these are reasons to prefer one route. They are the lines to put side by side in a spreadsheet.
What should you ask either supplier?
- Who is the employer of the person, and who holds the contract with me?
- What is the notice period on both sides?
- What happens if the person leaves or is not right for the work?
- Who provides equipment, software licences and security controls?
- How do you vet candidates, and can I interview them?
- How is the person’s time reported and invoiced?
- What are the terms if I want to hire the person directly later?
- How do you handle personal data and confidentiality?
If a supplier cannot answer these in writing, treat that as information.
Sources
Every figure or rule on this page comes from a public page we opened and read. Last reviewed 3 November 2026.
- GOV.UK: Employment status, for the definition of an employee, control of the workload and the risk of wrong status.
- GOV.UK: Worker, for who counts as a worker and agency worker rights from day one.
- GOV.UK: Agency workers’ rights, for who counts as an agency worker.
- GOV.UK: Fees to hiring companies and transfer fees, for when an agency can charge a transfer fee.
This guide is general information, not legal advice. For your own contracts, speak to a solicitor or Acas.
FAQ
Staff augmentation and recruitment questions
Is staff augmentation cheaper than using a recruitment agency?
It depends on the role and how long you need the person. Compare the full cost over the same period, including fees, management time and any replacement terms. Zemash does not publish prices: pricing depends on scope, and we confirm it on a call.
Who is the employer in staff augmentation?
It depends on the provider’s model. The person may be employed by the provider or engaged another way. Ask any provider to name the employer in the contract before you sign.
How fast can each route fill a role?
It depends on the role and the market. Ask each supplier how long recent searches for similar roles took. We confirm timings on a call, once we know the role.
What happens if the person does not work out?
Check the replacement or rebate terms of each route before you sign, and ask us about ours on a call.
Can I convert an augmented team member to a permanent hire?
Ask the provider about conversion terms at the start. For temporary workers supplied by an agency, GOV.UK sets rules on transfer fees. Zemash agrees terms in writing before work starts.
Which is better for a short project?
Staff augmentation usually fits a short project, because you add capacity for the period and adjust afterwards. A permanent hire suits a lasting role.
Related service
Staff augmentation from Zemash
Tell us the skills you need and we will explain how we would build the team. Email contact@zemash.com or book a 15 minute call. Read about our staff augmentation service or our recruitment process outsourcing service.
Last reviewed 3 November 2026. Written by Zemash Ltd.
Not sure which route fits?
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