What is a Key Information Document, and when do you need to issue one?

A Key Information Document (KID) is a mandatory document a recruitment agency must give a work-seeker before agreeing terms with them, under the Conduct Regulations. It sets out, in one place, the essentials of how they'll actually be paid and engaged — rather than leaving that detail scattered across a contract, an email thread and a verbal conversation.

The idea behind it is simple: a work-seeker should be able to look at one document and understand, before they say yes to anything, roughly what will land in their bank account and why. In practice, that simplicity is exactly what gets lost once umbrella companies, holiday pay treatment and variable rates enter the picture.

What has to be in it

• –Whether the worker is engaged directly or via an intermediary such as an umbrella company
• –The minimum rate of pay they can expect
• –Any deductions or fees that will come out of that pay, and roughly how much
• –How they'll actually be paid — frequency and method

How the KID changes depending on how someone's engaged

A worker paid directly through the agency's own PAYE has a relatively short list of deductions — tax, National Insurance, and not much else. A worker engaged through an umbrella company is a different document entirely: the KID needs to show the umbrella's margin, employer's National Insurance and apprenticeship levy where these affect the rate the worker actually receives, and holiday pay treatment, so the worker isn't surprised later by a headline rate that never resembled their take-home pay.

A limited company contractor sits differently again — off-payroll working rules may apply depending on the engagement, and the KID needs to reflect that basis rather than being copied from a PAYE template with the numbers changed. The three scenarios genuinely need three different documents, not one document with a variable swapped out.

A worked example

Two candidates are offered the same role at the same advertised rate. One is engaged directly through the agency's PAYE; the other goes through an umbrella company the agency has an arrangement with. Both KIDs can quote an identical headline rate and still describe two very different take-home outcomes once the umbrella's margin and employer's costs are accounted for. If the KID for the umbrella worker doesn't spell that out clearly, the first time they'll discover the gap is on their first payslip — which is precisely the scenario the regulation is designed to prevent.

Where this goes wrong in practice

The most common gap isn't refusing to issue a KID — it's issuing a generic one that doesn't reflect the actual engagement, particularly around umbrella company deductions, which have drawn increasing regulatory attention. A KID that understates deductions, even unintentionally, undermines the entire point of the document. This is exactly the kind of thing worth building into a standard onboarding checklist rather than handling case by case.

Multi-client and multi-role workers need more than one KID

A worker taking a second assignment through the same agency, with a different hirer or at a different rate, needs a fresh KID for that new engagement — the original document only describes the pay and deductions for the assignment it was issued against. Reusing the first KID on the assumption that the worker "already knows how this works" is a common shortcut, and it leaves the worker without an accurate picture of a genuinely different pay arrangement if the rate, the intermediary, or the deduction structure has changed at all between the two placements.

The same applies where a worker moves from one role to another with the same hirer — a promotion, a rate change, or a shift from days to nights with a different premium all justify a new KID reflecting the actual new terms, rather than treating the original document as evergreen for as long as the worker stays with that agency.

What happens if it's issued late, or not at all

Issuing a KID after terms have already been agreed defeats its purpose — the document exists to inform a decision, not to document one that's already been made. Beyond the direct compliance exposure under the Conduct Regulations, a late or missing KID tends to surface as a pay dispute later: a worker who never saw a clear breakdown of deductions has every reason to query their first payslip, and by then the conversation is defensive rather than informative.

Making KID issuance a hard gate, not a courtesy

The agencies that get this consistently right treat KID issuance as a blocking step — terms simply aren't agreed until the KID has gone out and, ideally, been acknowledged. That's a small process change with an outsized effect on both compliance exposure and the number of awkward pay conversations a desk has to have three weeks into an assignment.

Questions worth asking your own KID process

• –Does the template actually change based on engagement type, or is it one document with the numbers edited each time?
• –Is there a record of when each KID was issued, separate from when terms were signed?
• –Does a new assignment or a rate change automatically trigger a fresh KID, or does that depend on someone remembering to do it?
• –If a worker queried their payslip tomorrow, could the KID that led to it be produced within minutes?

How a worked example plays out over a full assignment

Take a worker starting an eight-week assignment through an umbrella arrangement. Week one's KID sets out the umbrella margin and the rate breakdown clearly. Four weeks in, the hirer extends the assignment and, separately, agrees a small rate uplift with the agency. If that uplift isn't reflected in an updated KID, the worker's next payslip won't match the document they were originally shown, and the mismatch — however small — is exactly the kind of thing that erodes trust in the agency's paperwork generally, not just in that one figure. A KID that's treated as a living document, updated whenever the underlying terms genuinely change, avoids this entirely.