What Is a Backdoor Hire? Why Agencies Lose Fees They Have Already Earned

A backdoor hire happens when a client employs a candidate an agency introduced, without paying the agreed fee. The sourcing was done, the introduction is on record, the placement went ahead, and the agency never found out.

What makes it unusual as a revenue problem is that the work is already finished. There is no candidate left to source and no client left to win. The fee was earned and it is sitting in somebody else's payroll.

Six ways a fee goes missing

Not all of these are deliberate. Most missed fees fall into one of the following.

1. The direct backdoor hire. A client hires an introduced candidate and says nothing about it. Occasionally deliberate, more often the result of an internal recruiter and a hiring manager not comparing notes.

2. The delayed hire. A candidate is rejected, then hired four or nine months later when a budget frees up or a different role opens. Most terms cover this through an introduction validity period. Very few agencies ever check.

3. The second candidate. The client hires someone else off the same shortlist, or off a longlist shared verbally on a call. Whether that is chargeable depends entirely on how introduction is defined in the terms.

4. The group hire. The candidate joins a subsidiary, a sister company, or a different office within the same group. This one turns on the definition of Client and nothing else.

5. The contract conversion. A contractor goes permanent and the transfer fee is never invoiced, usually because the original placement predates whoever now owns the account.

6. The referral chain. The introduced candidate is not hired but recommends someone who is. Rarely covered in terms, and worth a deliberate decision either way.

Why backdoor hires stay invisible

Nobody is looking for them. Detection is usually accidental, a consultant noticing a profile update or spotting a former candidate on a client's team page.

Underneath that is a structural problem. The CRM knows who was introduced, to whom, and on what date. It has no idea where any of those people work now. The fee sits in the gap between those two facts.

The gap widens as an agency grows. A firm making three hundred introductions a month across forty accounts has no realistic way to audit outcomes by hand, so the leak scales with the business while staying below the threshold where anyone would notice it.

What your terms of business need to cover

A backdoor hire is a contractual matter rather than a criminal one. Where terms have been accepted and the hire falls inside the introduction validity period, the agency ordinarily has a claim to its fee, which means recovery depends entirely on what the contract says. The clauses that decide it are worth reviewing properly with a solicitor rather than assumed.

Start with the definition of an introduction. A CV sent by email is the straightforward case. A name disclosed on a call is the one that gets argued about, and it should be dealt with explicitly.

Then the introduction validity period, with a start point that cannot be disputed. Six or twelve months from the date of introduction is common, though it varies by firm and by sector.

The definition of Client matters as much as anything in the document, and should name group companies, subsidiaries and associated entities rather than leaving the point open to interpretation.

Beyond those: cover for the introduction of a candidate to any role rather than only the one briefed, an obligation on the client to tell you when an offer is made, and a provision for contract to permanent transfer with the calculation set out.

Most agencies discover where their terms are weak at the moment they first try to enforce them.

How systematic detection works

Manual detection means a consultant checking profiles when they happen to remember. The systematic version is a scheduled comparison:

1. Take every candidate introduced in the past twelve to twenty-four months, with the introduction date and the client attached.

2. Compare each one against current employer information.

3. Flag anyone now working at the company they were introduced to.

4. Check the introduction date against the validity period in the terms that applied at the time.

5. Rank what is left by likely fee value, so the largest cases get looked at first.

What comes out of that is a shortlist to verify rather than a set of conclusions. The evidence trail matters more than the flag itself: a dated CV submission, accepted terms, and a start date falling inside the validity window.

Recovering the fee without losing the account

Most agencies have no appetite for litigating against a live client, and in the majority of cases they should not need to. A good share of missed fees are administrative failures rather than bad faith, particularly in organisations where the internal talent team and the hiring managers operate at arm's length.

The commercial route tends to work better than the legal one. A factual, dated, unemotional note to the account contact, setting out the introduction, the terms and the placement, will resolve a fair number of these on its own. Where the relationship is worth more than the full fee, a reduced settlement or a credit against future business keeps both intact. Formal escalation belongs at the end of that sequence rather than the start of it.

The harder problem is that most of these conversations never happen at all.

Treating it as a revenue line

Every agency with a CRM has some leakage. What differs between firms is whether anyone measures it.

Left as an occasional annoyance it stays anecdotal, and the number in the founder's head is almost always lower than the real one. Monitored properly it becomes recoverable margin that costs nothing in new sourcing or marketing to collect.