Sep 21, 2026

By Artem Pravda · CPO & CDO, Execue

Backdoor Hires: How Recruitment Agencies Catch and Recover Lost Fees

Sep 21, 2026

By Artem Pravda · CPO & CDO, Execue

Ribbed white wireframe torus on near-black, a single orange segment on the inner rim - the hire that slipped out

You introduced the candidate. The client passed. Eight months later they work there — and nobody sent an invoice. This is the most expensive leak most agencies never measure: what a backdoor hire is, how common it really is, how disputes get decided, and a four-stage playbook to prevent, detect, and recover the fees you’ve already earned.

Quick answer

A backdoor hire is when a client hires a candidate your agency introduced without paying your fee — usually months after the introduction, by approaching the candidate directly. Variants include hiring the person into a different role than the one you submitted them for, hiring through a subsidiary, converting a temp to permanent without the transfer fee, or passing your candidate’s CV to another company that hires them.

It’s far more common than most agency owners assume, because most backdoor hires are never discovered. One specialist UK recruitment law firm reports recovering £13.3 million across 3,432 fee disputes over five years — and those are only the cases agencies caught and chose to pursue. A 2026 audit found at least one missed fee in 89% of the agency databases it examined, at a rate of roughly one per 2,139 CVs sent.

Most backdoor disputes never reach court: they settle, once the client understands the contractual position and the evidence. Whether you get paid depends on four things — whether your terms were binding on the client, whether your introduction was the effective cause of the hire, how much time passed, and how good your evidence is.

The fix is a process, not a clause: prevent before you submit (binding terms, right-to-represent, timestamped submissions), detect after the client says no (track every candidate you’ve introduced), respond well when you find one (evidence first, calm first message, escalation ladder), and decide which claims are worth pursuing. The agencies that recover fees are the ones that notice — early.

If you read one section, read the four-stage playbook.

The numbers that matter

£13.3M recovered by one UK recruitment law firm across 3,432 fee disputes in five years — only the cases agencies caught
89% of agency databases in a 2026 audit held at least one missed fee
~1 in 2,139 CVs sent turned into a missed fee in that audit — four or five a year for an agency sending 10,000 CVs
6-12 months — the typical ownership period in agency terms of business
Most backdoor disputes settle before court — firm, well-evidenced correspondence is usually enough
£175,000 — one published settlement, offered the same day a client received a seven-day final demand

How to read this guide

How it actually happens → The eight-month surprise
What counts → What a backdoor hire is — and isn’t
The scale → How big the problem really is
Why it happens → Client, candidate, and agency causes
How disputes are decided → Terms, effective cause, and evidence
What to do → The four-stage playbook
The contract side → The clauses that protect you
Where Execue fits → Noticing the hires you’d otherwise miss

Scope note: this guide is general information for recruitment and staffing agencies, written mainly from UK and US practice. It is not legal advice — have your terms of business and any live dispute reviewed by a recruitment solicitor in your jurisdiction.

The eight-month surprise

February. You send a strong candidate to a client for a senior engineering role — a good introduction, a proper write-up, a phone call to the hiring manager to walk through why she fits. Two interviews later, the client passes: they’ve gone with an internal move.

You move on. There are other roles.

October. Scrolling LinkedIn on a Sunday evening, you see her name in a “welcome to the team” post. Same company. Different job title — a slightly junior version of the role you put her forward for. Started six weeks ago.

Nobody called. Nobody invoiced. And you only know because you happened to scroll at the right moment. The version of this story that happens far more often is the one where you never scroll past that post at all — and the fee simply doesn’t exist.

That’s what makes backdoor hires the most expensive leak in agency recruitment: not that they happen, but that they’re invisible by default.

What a backdoor hire is — and isn’t

A backdoor hire (also called going direct, candidate bypass, or client poaching) is when a client engages a candidate your agency validly introduced, without going through you or paying the agreed fee. Your introduction did the work; someone else banked the result.

The common forms:

The delayed direct hire. The client passes at the time, then contacts the candidate directly months later and hires them.
The different-role hire. You introduce someone for one role; they’re hired into a different one — often lower-paid — and the client argues no fee applies because “it’s a different job.”
The subsidiary or group hire. A sister company or parent entity makes the hire instead of the client you introduced to.
The onward introduction. The client passes your candidate’s CV to another business, which hires them.
The silent temp-to-perm. A temporary worker is taken on permanently without the agency being told, sidestepping the transfer fee.
The fee fight. Two agencies introduce the same candidate. One gets paid; the other finds out later and claims too.

And what it isn’t: a candidate the client genuinely already knew, had already received through another channel before your introduction, or sourced independently. That distinction is exactly what most disputes argue about — which is why evidence and timing matter so much.

How big the problem really is

Almost every agency underestimates backdoor losses, for a simple reason: the losses you don’t detect don’t appear anywhere. There’s no line on the P&L for fees you never knew you’d earned.

The best available evidence points one way:

One specialist UK recruitment law firm reports recovering £13.3 million across 3,432 fee disputes over five years — and that figure only counts cases agencies discovered and decided to pursue.
A 2026 audit by a detection vendor found at least one missed fee in 89% of the 56 agency databases it examined, at roughly one missed fee per 2,139 CVs sent. The sample was mid-sized agencies — more than 50 staff, typically sending over 10,000 CVs a year — so treat the rate as indicative rather than universal.

Run the arithmetic for an agency at that volume. Ten thousand CVs a year at one missed fee per ~2,100 is four or five missed fees annually. At an average fee of £15,000, that’s £60,000-75,000 of earned revenue walking out uncounted — every year, and compounding for every year nobody looks.

Smaller agencies send fewer CVs, so the absolute number is smaller — but the proportional hit to a boutique’s revenue can be larger, because every single fee matters more.

Why it happens: client, candidate, and agency causes

It’s tempting to treat every backdoor hire as client bad faith. The reality is more mixed — and understanding the causes changes how you respond.

On the client side:

Deliberate fee avoidance. Some clients do consciously decide not to pay, and coordinate with the candidate to hire quietly. It happens, and it’s what your terms exist for.
Genuine ignorance. Far more often than agencies assume, the person who made the hire didn’t know an agency had introduced the candidate. The HR contact changed, the CV was forwarded between teams, or the hiring manager found the candidate again on LinkedIn months later and didn’t connect the dots.
“We found them ourselves.” The client believes — sometimes honestly — that its own sourcing or an employee referral caused the hire, not your introduction.

On the candidate side:

Candidates are tempted to go direct too, and it’s worth knowing how they think about it. In one discussion on the professional forum Blind, a candidate asked whether it was acceptable to email the hiring manager directly after a headhunter sent a link to the role. The replies split: some warned that the recruiter would almost certainly find out and it could cost the candidate the opportunity; others argued the agency would get paid anyway under its contract. That split is precisely why written right-to-represent matters — you can’t assume a candidate understands, or respects, what your introduction means.

On the agency side:

Weak or unaccepted terms. Terms that were never clearly agreed by the client are the first thing a dispute attacks.
Thin introductions. A CV forwarded with no real involvement is a much weaker claim than a managed process with calls, interviews, and feedback.
No tracking. The single biggest agency-side cause: nobody is watching what happens to candidates after the client says no.

How disputes are decided: terms, effective cause, and evidence

Backdoor disputes turn on a small number of questions, and knowing them tells you how strong any claim really is.

1. Were your terms binding on the client? Terms that were signed or clearly accepted before the introduction are strong. Terms sent after the fact, buried in an email footer, or never acknowledged are weak — and it’s usually the first thing a client’s lawyer tests.

2. Was your introduction the “effective cause” of the hire? This is the central legal concept in most backdoor cases: whether your introduction genuinely led to the engagement. The legal position is less settled than most agencies assume — there are few recruitment-specific cases, and much of the reasoning is borrowed from estate-agency commission disputes. Clients typically defend by pointing to something that happened in between: an employee referral, a CV already in their database, another agency’s introduction.

3. How much time passed, and how involved were you? A hire one month after your introduction is a strong claim. A hire eleven months later, after another agency got involved and when you only forwarded a CV, is a much harder one — even with a 12-month ownership clause, which helps but doesn’t guarantee protection.

4. What does the evidence show? The email trail, attachments, timeline of introduction, interviews, salary conversations, and offer often decide the outcome. Agencies that document introductions properly win arguments that agencies relying on memory lose.

Most cases never get that far. Backdoor disputes rarely reach court — which is exactly why there are so few reported cases. The purpose of firm correspondence is usually to make litigation look risky enough for the client that it makes a settlement offer. And settlement is often the right outcome: backdoor claims tend to take longer and cost more than a straightforward unpaid invoice, so a negotiated fee now frequently beats a drawn-out fight.

The four-stage playbook

Backdoor protection isn’t one clause — it’s a process that runs from before you send the CV to after you’ve found the hire. Most agencies only think about stage three — the angry letter — which is why most lose.

Stage 1 — Prevent, before you submit

Get your terms accepted before the first CV. Whether your terms were actually binding on the client is one of the first things a dispute turns on. Terms emailed after the fact, or buried in a footer, are weak. A signed or clearly acknowledged agreement before any introduction is strong.
Ask the candidate point-blank. Have you applied to this company directly, or been put forward by anyone else, in the last twelve months? One agency learned this the hard way: a strong candidate hadn’t mentioned applying through the client’s own site two days earlier — the client hired her and owed nothing, because it already owned her candidacy. Their recruiters now ask the question in every screen.
Get written right-to-represent. A short confirmation from the candidate, for this specific company and role, before you submit. In a two-agency fight, the first documented introduction with consent is your strongest card.
Timestamp every submission. Send introductions in a way that leaves a clean record — the CV, the role, the date, the recipient. The email trail is often what decides the case.
Consider redacting on first submission. Remove contact details and identifying employer names until the client commits to interview, so a direct approach can’t be made from your document alone.

Stage 2 — Detect, after “no”

The single most practical control is noticing. A backdoor hire you never discover isn’t a dispute — it’s just gone. Most are found by accident, months later, scrolling LinkedIn.

Keep a watchlist of every candidate you’ve introduced, by client, for the length of your ownership period.
Check it on a schedule — monthly for recent introductions, quarterly for older ones — rather than hoping you’ll stumble across a move.
Automate it if you can. Dedicated detection services now exist that import your submission records and scan job sites and social profiles for employment changes; agent platforms can do the same inside your normal workflow. Mercury Hampton, a UK agency, discovered that candidates it had formally introduced to clients were later hired directly by those same companies; once it started monitoring job changes across the candidates it had introduced, it caught the movements, verified them, and recovered £25,000 in fees it would otherwise never have known about.
Catch it early. A hire one month after your introduction is a strong claim; the same hire discovered at month eleven, after another agency got involved, is a much harder one. Detection speed is claim strength.

Stage 3 — Respond, when you find one

Gather the evidence first. The introduction email and attachment, the role, the date, any interview arrangements, and the candidate’s current role and start date. Build the timeline before you make contact.
Open calmly and assume good faith. Often the person who made the hire genuinely didn’t know an agency had introduced the candidate — HR changed, or the CV was passed between teams. A factual, non-accusatory first message resolves more of these than a legal threat:

Hi [name] — congratulations on bringing [candidate] into the team. For your records, we introduced [candidate] to you on [date] for the [role] position — the original submission is attached. Under our terms of business, the introduction fee applies to engagements within twelve months of introduction, so I’ve attached our invoice. Very happy to talk it through if there’s context I’m not seeing.

Escalate on a ladder if needed: a firmer letter setting out the contractual position, then a final demand with a clear deadline (commonly seven days), then a solicitor’s letter. Most backdoor cases settle before reaching court — the purpose of firm correspondence is to make litigation look risky enough that the client makes an offer. In one published case, a financial institution that had resisted for months made a settlement offer the same day it received a final seven-day demand, eventually settling at £175,000. In another, a client claimed a second agency had introduced the candidate; the disclosure process exposed the claim as fabricated and the agency recovered its full fee plus legal costs.
Use specialists for the hard ones. Several recruitment-specific recovery firms work on a no-win-no-fee basis and add statutory interest, late-payment fees, and recovery costs to the debt — often meaning the client ends up covering the cost of collection.
Be willing to settle. Backdoor claims rarely resolve quickly and usually cost more than a straightforward unpaid invoice. A partial fee now — or a split with an intervening agency, galling as that is — is often better business than a long legal fight.

Stage 4 — Decide whether to pursue at all

Not every backdoor hire is worth fighting. Weigh four things: how long since the introduction (months, not a year), how involved you were (a full managed process versus a forwarded CV), how strong your evidence is, and what the relationship is worth going forward. A client who backdoored one hire but gives you six roles a year may be worth a firm conversation and a negotiated fee rather than a solicitor’s letter. A client who does it repeatedly isn’t a client.

The mistake that loses everyone the placement

Timing matters. If a dispute erupts while the candidate’s offer is still pending, the client may simply hire someone else to avoid the argument — one candidate described exactly this: a recruiter fought hard for a fee after the candidate was re-referred by a friend six months later, and the company chose its second-choice candidate instead. The agency lost the fee, the candidate lost the job, and the client lost its first choice. Where you can, settle the question of whose introduction it was before the offer stage, not after.

And the relationship point underneath all of it: the agencies that rarely suffer backdoor hires tend to be the ones embedded enough in their market that cutting them out isn’t worth the client’s reputation. Terms protect you; being genuinely valuable protects you more.

The clauses that protect you

Every dispute above is won or lost on wording written months earlier. These are the terms-of-business clauses that matter most for backdoor hires and fee fights.

Clause	What it should say	What it closes
Acceptance	Terms signed or clearly acknowledged before the first introduction	“We never agreed to those terms”
Introduction and ownership period	A fee is due on engagement within a defined period — commonly 6 or 12 months — of the most recent introduction	The delayed direct hire
Engagement definition	Engagement “in any capacity” — permanent, temporary, contract, self-employed, or through associated companies	The different-role and subsidiary dodges
Onward introductions	The client is liable if it passes the candidate’s details to a third party who hires them	CVs forwarded to other businesses
Prior and later introductions	The fee applies notwithstanding a later introduction by another agency or a later direct application — but not if the candidate had genuinely been introduced earlier	Fee fights, handled fairly
Temp-to-perm transfer	A transfer fee, or an extended hire period, if a temporary worker is taken on permanently	Silent conversions
Fee basis for these cases	Which salary the fee is calculated on if the candidate is hired into a different role	“The role paid less, so the fee is less”

Two principles apply to all of them. Clarity beats cleverness: vague or overly complex wording is one of the main reasons agency terms fail when tested, so plain, specific language wins. And enforceability varies by jurisdiction, so treat this as a checklist to review with a recruitment solicitor, not a template to copy.

For the full terms-of-business checklist — fee base, payment terms, rebates, and discount protection — see recruitment fees and terms.

Where Execue fits: noticing the hires you’d otherwise miss

The legal side of a backdoor hire — whether a fee is owed, how to pursue it — stays with you and your solicitor. The part software genuinely changes is stage two: noticing.

Execue can track the candidates you’ve submitted and flag when one appears at a company you introduced them to — the job change surfaces while the introduction is recent and the evidence fresh, rather than eight months later on a Sunday scroll. It works from your own ATS, so the watchlist is simply the candidates you’ve already put forward, and it runs continuously in the background rather than depending on someone remembering to check.

The same monitoring does double duty. A submitted candidate who moves to a different company isn’t a backdoor hire — but it may be a new relationship, or a signal that their old seat just opened. See job change tracking for recruiters for that side of the motion.

The boundary is the same as everywhere else: the agent surfaces the movement and the context; you decide whether there’s a claim, and how to raise it.

Where to start

This week: look back through the last twelve months of submissions for your five biggest clients and check where those candidates work now. Most agencies find at least one they didn’t know about. That single sweep usually makes the case for everything else in this guide.

This month: tighten the front end — make sure terms are accepted before the first CV, add the “have you already applied or been submitted anywhere?” question to every screen, and confirm right-to-represent in writing. Draft your calm first-contact message so it’s ready when you need it.

This quarter: have your terms reviewed for the clauses above, and turn detection from an occasional sweep into a standing process — a watchlist of every introduced candidate for the length of your ownership period, checked on a schedule or monitored automatically.

If you’d rather not rely on remembering to check, that’s the part Execue automates: tracking the candidates you’ve submitted and flagging when one turns up at a client you introduced them to. See how it works or start at execue.io.

The one-line version: a backdoor hire you catch early is a fee; one you never notice is simply gone.

FAQ

Q: What is a backdoor hire in recruitment?

A: When a client hires a candidate your agency introduced without paying your fee — usually months later, by approaching the candidate directly. Common variants include hiring into a different role than the one you submitted for, hiring through a subsidiary, silently converting a temp to permanent, or passing the CV to another company that hires them. It’s distinct from a candidate the client genuinely already had or sourced independently.

Q: How common are backdoor hires?

A: More common than most agencies think, because most are never discovered. One UK recruitment law firm reports recovering £13.3M across 3,432 fee disputes in five years — only the cases agencies caught and pursued. A 2026 audit found at least one missed fee in 89% of 56 agency databases examined, at roughly one per 2,139 CVs sent. For an agency sending 10,000 CVs a year, that’s four or five missed fees annually.

Q: How long does a recruitment agency “own” a candidate?

A: As long as the agency’s terms of business say, provided those terms were binding on the client — commonly six or twelve months from the most recent introduction. But an ownership clause helps rather than guarantees: a hire one month after your introduction is a strong claim, while one eleven months later, after another agency got involved, is much harder, especially if you only forwarded a CV.

Q: What does “effective cause” mean in a backdoor dispute?

A: Whether your introduction genuinely led to the candidate being hired. It’s the central question in most backdoor cases, and the legal position is less settled than agencies assume — there are few recruitment-specific cases, and much of the reasoning comes from estate-agency commission disputes. Clients usually defend by pointing to something in between: an employee referral, a CV already in their database, or another agency’s introduction.

Q: What should I do when I discover a client hired my candidate directly?

A: Gather the evidence first — the introduction email and attachment, the role, the date, and the candidate’s start date. Open calmly and assume good faith: the person who hired often didn’t know an agency was involved, and a factual message with the original submission and your invoice resolves many cases. If not, escalate: a firm letter, a final demand with a deadline (commonly seven days), then a solicitor or a no-win-no-fee recruitment recovery specialist.

Q: Do backdoor hire disputes go to court?

A: Rarely. Most settle before court, which is why there are so few reported cases. Firm, well-evidenced correspondence is usually aimed at making litigation look risky enough that the client makes an offer. In one published case, a client made a settlement offer the same day it received a seven-day final demand, eventually settling at £175,000.

Q: How do I stop backdoor hires before they happen?

A: Get your terms accepted before the first CV, ask every candidate whether they’ve already applied or been submitted by anyone else in the last twelve months, confirm right-to-represent in writing, timestamp every submission, and consider redacting contact details until the client commits to interview. Then keep watching the candidates you’ve introduced for the length of your ownership period.

Q: What happens when two agencies submit the same candidate?

A: That’s a fee fight. Typically the agency whose introduction led to the hire gets paid, and the other claims when it finds out. Clients often have some sympathy on their side, having already paid one substantial fee. The strongest position belongs to the agency with the first documented introduction made with the candidate’s consent — which is why written right-to-represent and timestamped submissions matter.

Q: Should I always pursue a backdoor hire?

A: No. Weigh how long ago you made the introduction, how involved you were, how strong your evidence is, and what the relationship is worth. A client who backdoored one hire but gives you regular work may be worth a firm conversation and a negotiated fee rather than a solicitor’s letter. A client who does it repeatedly isn’t a client worth keeping.

Q: Can I track whether candidates I submitted were hired later?

A: Yes — and it’s the single most practical control. Keep a watchlist of every candidate introduced to each client for the length of your ownership period and check it on a schedule, or use a detection service or agent that monitors job changes automatically. The earlier you catch a hire, the stronger the claim.