Temp-to-perm is one of the smartest ways for a UK employer to build a permanent team, because you hire on proven performance rather than a single interview. A temporary worker joins to cover a gap or a busy period, settles into the role, and if they are the right fit you convert them to a permanent contract without starting a fresh search. You have already seen how they work and whether they hit the standards the job needs, which is a level of certainty a CV and a two-round interview can rarely give you.

The challenge is getting the timing right. Convert too early and you commit before you have really seen the person under pressure. Leave it too long and you risk losing a strong worker, or triggering costs you did not plan for. This guide sets out how a temp-to-perm arrangement works, when the moment to convert usually arrives, what it costs, and the steps that keep the process clean and compliant.

How a Temp-to-Perm Arrangement Actually Works

A temp-to-perm arrangement starts like any other temporary placement. The worker is engaged and paid through the recruitment agency, which handles their contract, payroll, tax, and the compliance checks that come with agency work. You pay the agency an hourly or daily charge that covers the worker’s pay plus a margin, and the worker fills the role exactly as a permanent employee would, just on a temporary footing. During this period you are assessing fit and they are assessing you.

When you decide to make the role permanent, the worker transfers from the agency’s books onto your own payroll as a direct employee, and depending on your terms a transfer fee may apply, which we cover in the costs section below. They move from temporary status to a permanent contract with your standard benefits and notice. Our temp-to-perm recruitment service is built around this exact pathway, so the conversion is planned from the start rather than negotiated in a hurry at the end.

It is worth being clear with the worker early that the role could become permanent for the right person. That transparency motivates good candidates and means the conversation about converting feels like a natural next step. If you are still building the case for temporary hiring in the first place, our guide to the benefits of temporary staff hire explains where flexible resourcing earns its place before any conversion is on the table.

When Is the Right Time to Convert?

There is no single deadline, but there are clear signals. The best moment to convert is usually when three things are true at once: the worker has proven they can do the role to your standard, the role itself has become a genuine permanent need rather than a temporary one, and you have enough evidence of fit to commit with confidence. Many employers reach that point somewhere between four and twelve weeks, though technical or senior roles can take longer to judge fairly.

There is also a compliance milestone worth planning around. Under the Agency Workers Regulations 2010, agency workers gain equal treatment on pay and basic conditions after twelve weeks in the same role. The gov.uk guide to agency workers’ rights sets out what that entitlement covers. This does not force your hand, but many employers treat the approach of the twelve-week mark as a natural point to decide whether to convert, extend, or end the assignment.

What Temp-to-Perm Costs, and Why It Often Saves Money

During the temporary phase you pay the agency’s charge rate, which covers the worker’s pay, employer costs, and the agency’s margin for handling contracts, payroll, and compliance. When you convert to permanent, a transfer or introduction fee may apply, reflecting the agency’s work in sourcing and vetting the candidate. The fee often reduces the longer the worker has been on assignment, because you have already paid a margin over those weeks.

That headline number can look like an added cost, but it usually compares well against the alternative. A direct permanent hire that goes wrong is expensive once you add lost productivity and a second recruitment round. Temp-to-perm reduces that risk because you have already watched the person perform. The table below sets out where the value tends to sit.

The maths shifts further in your favour in sectors where a mis-hire is disruptive and skills are hard to source. Our warehouse recruitment team regularly converts reliable operatives who have proven their pace and safety record, while in specialist functions a tested hire removes months of uncertainty from a demanding role.

The employers who get temp-to-perm right treat the temporary phase as a working trial. They decide on evidence, agree the terms early, and convert the moment the fit is proven and the role is truly permanent.

NTR employer support team

Getting the Compliance and Contract Right

A conversion is only clean if the paperwork is. When a worker moves to your payroll they become a direct employee, so they need a written statement of employment particulars and a fresh set of terms covering pay, hours, notice, and benefits. The Acas guidance on employment contracts is a useful reference for what a compliant permanent contract must contain, and handling this properly starts the permanent relationship on a professional footing.

Right to Work also carries across. The original check completed by the agency during screening should be reviewed and, where needed, refreshed on your own records so your file is defensible as the direct employer. This is where working with a REC and APSCo accredited agency pays off, because the vetting, references, and eligibility checks are already documented. National Temping Recruitment handles the temporary compliance and guides you through a smooth transfer via our contact page, so the conversion adds a good permanent employee without adding risk.

Frequently Asked Questions

Turn a Proven Temporary Worker into Your Next Permanent Hire

Temp-to-perm removes much of the guesswork from permanent recruitment, because you commit to someone you have already watched do the job well. Agree the terms with your agency at the start, judge the worker on the real demands of the role, and convert when the fit is proven and the need is genuinely permanent. To plan a temp-to-perm route for a role in any sector, speak to our team through our contact page or on 0333 772 9824.