The number that tends to stop people is this one.

A bad hire at a salary of £42,000 costs a UK business over £132,000. That is the cost of a bad hire UK businesses rarely calculate in full.

That figure comes from the Recruitment and Employment Confederation - the UK’s leading authority on hiring standards. It accounts for recruitment costs, onboarding and training, lost productivity, management time, impact on team morale, and the cost of starting the process again.

Three times annual salary. For a single mistake.

And according to the same research, 85% of HR decision-makers admit their organisation has made a bad hire. Not as an exceptional event. As a normal part of how hiring tends to go.

This is not a problem that is rare or unlucky. It is a structural problem with how most organisations approach hiring.

Where the cost actually comes from

Most organisations, when they think about the cost of a bad hire, think about the salary paid before the problem was identified and the cost of replacing them.

That is the visible part. The larger cost is usually invisible.

• Lost productivity. It takes an average of three months for a new hire to reach full productivity. A bad hire who remains in post for six to twelve months before being identified is not merely unproductive - they are actively impeding the output of the people around them. Research consistently shows that underperforming hires reduce team productivity by 30 to 40%.
• Management time. A struggling hire consumes disproportionate management attention. Performance conversations, increased oversight, escalated problems, extra support. Time that senior leaders spend managing a bad hire is time they are not spending on the work that grows the business.
• Team morale and attrition. When a bad hire creates friction - missed deadlines, tension in the team, a leadership vacuum, a cultural mismatch - the cost extends to the people around them. Good performers leave. Morale erodes. The problem becomes compound.
• Severance and legal risk. Ending an employment relationship, even when clearly justified, carries direct cost. Legal advice, settlement agreements, statutory redundancy. UK employment law is reasonably well-balanced but it adds time and cost to every exit.
• The recruitment restart. The process that failed must begin again - job description, search, interviews, offers, notice periods. Another six months. Another set of recruitment fees. Another onboarding period before the new hire reaches productivity.

For a senior marketing or commercial hire, where salaries are higher and the impact on the business is greater, these costs compound further.

Why it keeps happening

If bad hires are this expensive, and most organisations know they are expensive, why do they keep happening?

The honest answer is that most organisations are optimising for the wrong thing in their recruitment process.

They are very good at assessing skills. Qualifications, experience, sector background, technical capability - these are all things the CV shows and the interview confirms. Skills are measurable, comparable, and comfortable to evaluate.

What skills do not show is how a person actually operates inside a specific team, culture, and leadership environment. Whether they thrive under ambiguity or need structure. Whether their decision-making style will complement or conflict with the people around them. Whether their values align with the organisation’s in ways that matter when things get difficult.

Hiring managers fill this gap with instinct. With gut feeling. With “they felt like the right fit in the room.” Instinct is not worthless, but it is unreliable, inconsistent, and subject to biases that tend to produce teams of people who look and think like each other.

The result is hires that look right on paper and in the interview - and fail in the role anyway.

The chemistry gap

Most bad hires are not bad people.

They are people placed in the wrong environment. A different organisation, a different team, a different manager - and the same person might thrive.

This is what the recruitment industry almost universally gets wrong. It treats hiring as a matching problem against a job description. Skills versus requirements. Experience versus desired background. The match looks clean. The hire does not work.

The missing variable is chemistry.

Not personality fit in the subjective, instinctive sense. Something more specific: how a person’s working style, decision-making approach, collaboration patterns, and values alignment actually interact with the specific team, leadership, and culture they are being placed into.

Getting this right consistently requires more than an unstructured interview and a gut feeling. It requires a methodology.

A different approach to hiring

At 0.618, we built the Chemistry Index™ specifically to address this gap.

It is a structured assessment approach that evaluates fit beyond skills and experience - looking at working style, how candidates handle ambiguity and pressure, how they build trust, and how their values and motivations align with the specific organisation and team they are being considered for.

It does not replace human judgement. It informs it. It gives hiring managers and leadership teams better information, consistently gathered and consistently applied, so that the decision they make is based on more than who interviewed best on the day.

The result is hires that do not just look right on paper - they stay, perform, and make the team around them better.

What better hiring actually produces

The business case for reducing the frequency of bad hires is not complicated.

If one bad hire at mid-management level costs £132,000, and an organisation makes five hires per year with a 30% mis-hire rate (lower than the industry average), the annual cost of bad hiring is nearly £200,000. Year on year.

Investing in a recruitment process that is materially better at assessing real fit does not just save that cost. It compounds: better hires stay longer, perform better, and reduce the downstream impact on the teams around them.

The organisations that build this capability tend to hire more slowly, more deliberately, and more successfully. Not because they are less urgent in their hiring, but because they have a process that they trust.

Working with 0.618

0.618 specialises in marketing and commercial recruitment. We work with organisations that want to get hiring right - not just fill roles.

If you are evaluating how your recruitment process could better assess fit, or if you have experienced the cost of a bad hire and want to approach the next search differently, we would welcome a conversation.