Most agency founders know the salary of a bad hire down to the euro. And yet they almost always underestimate what they really pay in the end. Because the salary is the smallest and most harmless item on this bill.
Here's my claim: a single bad hire can quickly cost a small agency 20,000 to 50,000 euros. Not as an abstract study figure, but as a concrete calculation I'll lay out for you in a moment. And the most expensive part of it appears on no payslip.
Why the True Costs Stay Invisible
When you think of a bad hire, you probably think of the salary you paid and maybe a severance. That's the visible part. The rest happens out of sight, spread over months, and shows up on no report as its own line.
That's exactly why a bad hire is so treacherous. It bleeds you slowly instead of sending you a clear invoice. You notice that a project is stalling, that a client is unhappy, that you're stepping in more than planned again. But you rarely connect it to the one hire that went wrong four months ago.
The Calculation, Broken Down
Let's run it through honestly. I deliberately avoid a wishful number and lean on what serious research supports.
The Direct Costs
These are the items you could write on a note yourself. Recruiting and ads. The time you and your team put into interviews. The salary up to the separation. Possibly a severance. The US Department of Labor sets a conservative lower bound of at least 30 percent of the first-year salary for this visible block alone. At an annual salary of 50,000 euros you're already at 15,000 euros before a single hidden item is added.
The Hidden Costs
This is where it gets expensive. Lost project time, because the work was half done or faulty and someone else had to redo it. Mistakes in front of the client that cost trust and, in the worst case, a follow-up project. Your own leadership time, which disappears into correcting, talking and steering instead of flowing into growth. And the effect on the team, which carries a weak hire and slowly loses its drive.
For exactly this hidden block, the Oxford Economics research provides one of the most solid figures. In their 2014 study, a replacement hire in the UK costs around 30,000 GBP, and the largest single item in it is the productivity loss during onboarding. Over a good half a year, until the new person even reaches full performance. That's not a penalty fee, it's simply the time in which you pay and get nothing back yet. And with a bad hire, in the end you get nothing back at all.
Why Small Agencies Get Hit Harder
In a corporation, damage like this spreads across hundreds of shoulders. Not with you. When you have five to thirty people, every single person is a noticeable share of your striking power. If one hire fails, you're not missing one percent, you're missing a visible chunk of your ability to deliver.
On top of that, too much already hangs on you as the founder. If you then also shoulder the correction of a bad hire, that slows down your own role and you as the bottleneck along with it. The damage multiplies, because it runs through the whole company.
That's why the range of 20,000 to 50,000 euros isn't a scare tactic for a small agency, it's a sober estimate. It emerges when you add the direct costs to the productivity loss and the tied-up leadership time. Industry bodies like SHRM put a bad hire in a mid-level or leadership role at 100 to 150 percent of the annual salary, and at the leadership level, consultancies like Kienbaum in the German-speaking market even observe costs up to three times the annual salary. Against that backdrop, the range named here is cautious rather than exaggerated.
The Most Common Cause Is the Wrong Seat, Not the Wrong Person
Now comes the part that surprises most people. A large share of what gets booked as a bad hire is no bad person at all. It's a strong person in the wrong place.
You may know the feeling. Someone with a good résumé, likeable, technically sharp, and it still doesn't work. That often isn't about ability, but about the role. A person who comes alive building systems withers in a job that demands acquisition every day. And the other way around. The person isn't the problem. The seat is.
The bitter part: this kind of bad hire is created before the first day of work, in the moment you don't know exactly which role your team actually needs. You then fill a position that feels loud instead of the gap that's really open. And you pay the full bill for it.
How to Flip the Bet
A hire is always a bet. The only question is how good your information is before you place it. From the gut, you bet on sympathy and résumé and hope the role fits somehow. That's the expensive version.
The other version costs you a little clarity up front and spares you the five-figure damage afterward. Before you post the role, you clear up two things. Which role actually belongs to you, so you know what you're handing off. And which type profile closes the gap that creates. That's the difference between a bet on blind luck and a bet with a solid foundation.
This is exactly where an assessment pays off. A structured look at your Best Seat and your Next-Hire profile costs a small three-figure sum. Against it stands a five-figure risk you take on every time you hire without that clarity. That's not a hard calculation.
A bad hire costs an agency with five to thirty employees roughly 20,000 to 50,000 euros depending on the role, once you add recruiting, onboarding, lost project time and the founder's tied-up time. The largest item is never the salary, but the productivity loss until the wrong person even delivers.
FAQ
How much does a bad hire really cost? In an agency with five to thirty people, direct and hidden costs quickly add up to 20,000 to 50,000 euros per case. This range is not a single study figure, but a calculation from several solid sources: the productivity loss of around 30,000 GBP per replacement hire from Oxford Economics, the SHRM rule of thumb of 100 to 150 percent of the annual salary for mid-level roles, and the US Department of Labor's lower bound of at least 30 percent.
What is the largest cost block? Not the salary, but the hidden costs. Lost project time, mistakes in front of the client and the tied-up time of leadership make up the largest part. These are exactly the items that appear on no invoice and are therefore regularly underestimated.
How do I avoid a bad hire? By clearing up before the hire which type profile closes your real gap, instead of deciding by sympathy or résumé. A large share of bad hires are actually role errors: a strong person in the wrong place. Whoever knows the right seat in advance spares themselves the most expensive mistake.
Weigh your own risk against a three-figure sum. The free QuickCheck shows you in about 20 minutes your Best Seat and a first indication of your next hire. Want a solid Next-Hire profile before you post the next role, you'll find it in the premium report.
About the Author
Founder
Joram Hoefs is the founder of CORE-Navigator. With over a decade of experience in business consulting and personality diagnostics, he has made it his mission to develop data-driven tools that help entrepreneurs understand and leverage their unique DNA.
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