The real cost of a bad hire

In the interviews they looked perfect. Good answers, the experience you asked for, and the team liked them from the first coffee. Four months later, in a meeting behind a closed door, someone finally says out loud what everyone has been thinking: this is not working.

Nearly every company we talk to has been there at some point. And when that moment comes, the discussion usually centres on the salary already paid. That makes sense, because it is the number everyone can see. But it is rarely the biggest one.

We are not going to give you a magic figure. The impact depends enormously on the role, the stage the company is at and how long it takes you to notice the problem. What we can give you is a way of working it out for your own case, and what we have seen actually lower the risk.

Not every departure is a hiring mistake

Before you start adding things up, be honest about the diagnosis. Sometimes strategy shifts, the role stops making sense, or the person gets a personal opportunity nobody could have predicted. That is not a bad hire.

For us, a bad hire is one where the mismatch could have been spotted during the process. Skills were missing and nobody checked. Expectations about the role or the culture were not aligned. Or the motivation turned out to be different from what it seemed. Drawing that line is not a matter of semantics. It is what lets you learn something from the case instead of putting it down to bad luck.

The part you can add up on a calculator

The direct costs are the easy ones. There is what the hiring process cost, with fees, job ads and tools, but above all your team’s interview hours, which almost nobody counts. There is the salary plus employer social security for the time the person was with you. There is onboarding, with training, equipment, licences and the time of whoever supported them. There is the exit, with severance where it applies, legal advice and admin (the terms depend on the type of contract and the reason for termination, so check them with an employment lawyer). And there is starting over, with everything above all over again.

The part that never shows up on an invoice

This is where it really hurts, especially in senior or management roles.

For months, that role has not delivered what you expected. Think about which projects slipped and which decisions were made badly, or not made at all. Think about everyone else’s time too: colleagues redoing work, a manager spending hours on check-ins, difficult conversations and improvement plans instead of on what actually mattered.

Then there is the effect on the team, which is what worries us most when the mistake is in a leadership role. A poor fit there can drain the motivation of your best people and, at worst, push them out the door. In a tech team of six or eight, one hire changes the atmosphere for everybody.

There is also an opportunity cost that rarely gets mentioned. While the wrong person held the role, the right one did not. And the strong candidates you turned down in that process have, by now, probably joined someone else.

In technical roles, a poor architecture decision can keep costing money years after the person has gone. In management roles the same goes for badly designed processes or structures. And finally there is reputation: clients who noticed their contact changed, candidates who see the role “has opened up again”, or a comment or two on employer review sites.

Put numbers on your own case

If you want to run the exercise on a specific case, sit down with your team and work through it:

Add up the direct costs using real payroll data and invoices.
Estimate how many hours the manager and the team spent dealing with the situation, and multiply by a rough hourly cost.
List the projects or results that were affected and assess their impact conservatively.
Add the time the role will stay unfilled until the next person is fully productive.

You will not get an exact figure, but it nearly always comes as a surprise. And it gives you a very solid case for spending more time on the next search.

Why it keeps happening

When we look back at a hire that went wrong with a client, the same causes come up again and again. Often the profile was poorly defined and each person on the team had a different job in mind. Sometimes there was a rush, and the pressure to fill the seat meant the bar dropped or stages were skipped. Very often the interviews were unstructured: each interviewer asked whatever they liked and the final call came down to gut feeling. Or the technical side was assessed properly and nobody looked at ways of working, motivation or team fit. Sometimes the candidate formed a picture of the role that was not the real one. And sometimes the hire itself was fine, but nobody supported them once they joined.

What we would change next time

No process removes the risk, but some things reduce it a great deal, and we recommend them almost every time:

Before you search, write down what this person should have achieved at six and twelve months, and assess every candidate against that.
Ask everyone the same core questions with agreed criteria, and have each interviewer score independently before comparing notes.
Swap theoretical questions for a short exercise that looks like the real work.
Take references properly, asking about specific situations rather than just whether they would recommend the person.
Tell candidates about the hard parts of the role as well. Someone who accepts knowing the challenges is more likely to stay.
Plan the onboarding with goals for the first 90 days and regular check-ins, so you spot a mismatch early.

The probation period exists for this too, as a way to assess someone in real conditions. Use it with care, and remember that its length and terms depend on the collective agreement and the contract, so confirm them with your employment adviser.

One last sum

Do the comparison calmly. In one column, a few extra hours at the start to define the profile properly and assess with rigour. In the other, everything you have just read. The first column wins nearly every time.

Helping companies build that structure, with an outside view of the market, is a big part of what we do, especially for roles where a mistake costs the most. If you have one of those on your desk, we are happy to talk it through.

The real cost of a bad hire (and how not to repeat it)