Why 1 in 3 new sales reps leave within 6 months
Your new sales rep is gone after six months. Again. You spent three months searching, met six candidates, and finally found someone who "clicked". Smooth conversation, strong CV, positive references. Contract signed, onboarding started, first deals closing.
And then, somewhere between month four and six: a conversation. He has "another opportunity". Or she "feels it isn't quite the right fit". Or: nothing, just a resignation in your inbox on a Friday afternoon.
You start over. And the worst part? You feel like you have no idea what to do differently next time.
In this blog, I explain why a salesperson leaves so quickly after being hired, what a sales mishire really costs you, and which three mistakes in commercial recruitment cause this pattern. And most importantly: what you could have seen in advance if you had looked objectively at behaviour instead of relying only on gut feeling.
Why does a salesperson leave so quickly after being hired?
Early departure in sales is no coincidence. A salesperson who's out within six months isn't a matter of a "tight labour market". It isn't "that generation that doesn't stay anywhere long". Those are the easy explanations.
The honest explanation is almost always the same: there was a mismatch between the role and the profile that could have been visible on day one. This is the pattern behind most failed sales hires.
What I see in practice with SMEs and commercial teams:
- A salesperson who looked perfect on paper turns out, after three months, to be stuck on cold calling because their drive for prospecting is far lower than expected.
- An account manager who was excellent at their previous employer fails in your company because they suddenly had to open a new market autonomously.
- A junior seen as talented breaks under the stress of a quota-driven environment without anyone having measured their stress resilience in advance.
In each of these cases, the behaviour was predictable. Nobody simply looked at it in time.
What does a mishire cost when hiring a salesperson?
Before we look at the causes, the cost picture. Because as long as you don't make this number concrete for yourself, "we just have turnover" remains an acceptable answer.
The numbers aren't gentle, and they are well documented:
- Securex calculated that a failed external hire of an office employee in Belgium costs at least 35,250 euros. For executives, this rises to 51,850 euros.
- Belgian sales recruiter Vendetium arrives at at least 50,000 euros for a medior sales profile when the hire fails within six months.
- Wiggli puts the total cost of a failed hire between 20,000 and 150,000 euros, depending on the profile and seniority.
- Archetype calculated specifically for sales 30,000 to 200,000 euros per mishire.
Where does that cost concretely sit? Run the numbers for one salesperson who leaves after six months:
- Recruitment cost: ads, HR time, possibly a sales recruiter or agency. External agencies typically charge 15 to 25 percent of the gross annual salary.
- Salary cost during the collaboration: gross salary plus 25 to 30 percent employer contributions, plus extralegal benefits. For a medior sales profile, this quickly adds up to 90,000 euros per year.
- Onboarding and ramp-up time: a commercial profile takes on average six to nine months to become fully productive. During that period, they cost full price but don't yet deliver fully.
- Missed pipeline: a salesperson who isn't fully up to speed doesn't close the deals that a seasoned colleague would have. That's not a cost on your P&L, but it is real lost revenue.
- Lost customer relationships: prospects and customers who were just starting to build trust have to start over with a new contact. Some walk away.
- Lost momentum: the rest of your team feels it. Targets shift, territories get redistributed, and doubt creeps in: "is it us, or is it here?"
Hiring a salesperson who leaves within six months isn't a small slip-up. It's a bill of tens of thousands of euros that nobody wants to put on the CEO's desk
Which 3 mistakes do companies make when hiring a salesperson?
After hundreds of conversations with sales managers and business owners, I see the same three mistakes in commercial recruitment come back over and over. None of the three is exotic. All three are avoidable.
Mistake 1: Hiring a hunter for a role that actually needs a farmer
This is the most common mistake. You have a commercial role open. The job description says "sales profile with drive and perseverance". You're looking for a hunter. You find a hunter. And six months later, he's gone.
What happened? In reality, 80 percent of the job consisted of following up with existing clients, managing longer sales cycles, and building trust over multiple quarters. That's farmer work, not hunter work. A hunter gets bored in that job. He wants to score, stay sharp, close the deal, next. Give him six months of existing accounts to "develop" and he'll go looking for something that gives him more of a kick. With you or with the competition.
The reverse is just as true. Put a farmer in a pure hunter role where cold prospecting is the main task and you get the same effect: he avoids the work he doesn't enjoy, misses his targets, gets feedback, feels incompetent, and leaves.
The solution isn't in a better job description. The solution is in objectively measuring in advance whether the candidate's profile fits what the role demands in practice. Hunter, farmer, deal maker, solution seller, technical sales and executor are different sales archetypes with different behaviour. Anyone who mixes them up in sales recruitment pays the price every time.
Mistake 2: Not measuring stress resilience and autonomy for a hunter role
Opening new business is mentally tough. You hear no more often than yes. You often work alone. You don't get warm leads handed to you. Feedback comes slowly: a prospect who says no today may say yes in six months, but you don't know that today.
For someone with average or low stress resilience, this is a grinding job. For someone with low autonomy, who likes clear structure and direction from a manager, it's a lonely project.
You won't see this in interviews. Everyone says they "enjoy working autonomously" and "handle pressure well". In a one-hour conversation, you simply can't disprove that. Only after three months in practice do you notice that the candidate comes in every day waiting for input, or that he sleeps badly after two weeks because his pipeline is empty. That's the moment your sales hire fails without anyone naming it out loud.
There's no mystery here. Stress resilience and autonomy are measurable behaviour. A solid assessment shows that before you sign.
Mistake 3: Making assumptions based on a smooth conversation
This is the subtlest mistake, and the most expensive. Good salespeople are by definition people who can sell themselves well. A job interview is literally their home game.
So what do you do? You interview a candidate. He's likeable, he asks good questions, he has self-confidence, he has a story for every situation you raise. You feel a "click". You choose him.
What you measured: whether he can talk well in a one-hour conversation. What you didn't measure: whether he persists in practice when a prospect doesn't call back three times. Whether he takes ownership of his numbers or quietly waits for someone to correct him. Whether he's analytical enough to read his own pipeline critically. Whether he has enough structure to keep a CRM up to date even in week ten.
An interview measures charm and intelligence. It doesn't measure work behaviour over weeks and months. For that you need a different instrument.
Example: how a strong account executive burns out as a business developer
A client of mine, a software company in Antwerp, had a strong account executive. Three years with the company, solid figures on his existing portfolio, clients who liked him. When the company decided to open a new market in the Netherlands, he was the logical candidate: "he's a great seller, so he'll figure this out".
Five months later: burnt out. He struggled with cold prospecting, couldn't find a rhythm, his numbers were lagging, and his motivation was gone. Three weeks later, his resignation. Another salesperson leaving after a decision made too quickly.
What a sales assessment would have shown in advance: high scores on relationship orientation, EQ, closing skills and ownership. But low scores on prospecting and on the drive specifically needed to build up an empty territory week after week. His profile was clearly a farmer with strong closing skills, not a hunter.
The company would never have moved him if they had seen those scores in advance. They would have hired someone else for the Netherlands and kept him in his strong role. Instead, they lost their best account executive and the Netherlands sat still for six months.
This isn't an exception. This is the pattern.
How do you hire a salesperson without a mishire?
A sales assessment before the hire isn't a luxury. It's an investment that pays for itself after a single avoided mishire. What you concretely see:
- Which behavioural factors (drive, assertiveness, relationship orientation, stress resilience, structure, autonomy, analytical ability, EQ, prospecting, closing skills, ownership, technical affinity) are strongly present and which are not.
- Which sales archetype the profile leans towards: hunter, farmer, deal maker, solution seller, technical sales or executor.
- Whether the profile fits the specific role you have open. For example, whether this candidate is more suited as an account manager than as a business developer, or vice versa.
It's not an oracle. It doesn't rule out all risk. But it takes the biggest mismatches out before they walk around your company unproductively for six months. That changes your sales recruitment from guessing to grounding.
What you can do now before you hire your next salesperson
If this blog hits close to home, do these three things before your next hire:
- Write out honestly what the role actually demands in practice. Not the job title, not the wishes, but the real work. What percentage of prospecting, what percentage of follow-up, how much autonomy, how much top-down structure, how much pressure on numbers, how much space to build relationships. The sharper this picture, the easier it is to know which archetype you need.
- Have candidates take a solid assessment before you decide. It costs a fraction of what a failed hire costs, and it produces an honest conversation with the candidate. No surprises after three months.
- Dare to say no to a likeable candidate with the wrong scores. This is the hardest part. The click is there, the conversation was smooth, but the numbers show the role doesn't fit. Believe the numbers. Seeing a mismatch in the assessment costs you nothing. Discovering a mismatch after six months costs you tens of thousands of euros.
Hiring a salesperson doesn't have to be a gamble. A departure is rarely a surprise. It's almost always a pattern that was already visible at the hiring stage.