How much does a bad employee cost?
It sounds like a straightforward question. You might start with salary, recruitment fees and the cost of finding a replacement. But in a technology transformation programme, the cost of a bad hire can go much further.
A poor hiring decision can affect productivity, delay critical milestones, increase contractor and supplier costs, create additional rework and put more pressure on the people around them. In other words, the negative impact of a bad hire isn't confined to recruitment. It can become a programme delivery risk.
Our latest report, The Cost & Consequences of Hiring Mistakes in Technology Programmes, explores why these mistakes happen, their financial and operational impact, and what organisations can do to reduce the risk.
Read the full Cost & Consequences report (PDF)
This blog covers:
- What is the cost of a bad hire as a percentage of salary?
- A simple bad hire cost formula
- The negative impact of a bad hire on your existing team
- What can the cost of a bad hire look like on a technology programme?
- Why do bad hires happen?
- Warning signs your organisation could be exposed to bad-hire costs
- Reducing the cost and risk of a bad hire
- The true cost of a bad hire / impact on delivery
How much does a bad employee cost?
There isn't one universal figure for the cost of a bad hire.
That's because the real cost depends on the seniority of the employee, how quickly problems are identified, the importance of their role and the knock-on effect they have on the wider team or programme.
For senior and specialist hires, our report highlights that replacement costs can reach 200%–250% of the employee's salary.
But replacement cost is only part of the picture.
For transformation programmes, the financial impact can include:
- Recruitment costs
- Onboarding and training
- Contractor extensions
- Systems integrator (SI) overages
- Delayed programme milestones
- Additional management and governance costs
- Rework and remediation
- Delayed business benefits
That means asking “How much does a bad employee cost?” requires looking beyond their payslip.
You need to consider the value, time and momentum that can be lost around them.
What is the cost of a bad hire as a percentage of salary?
One useful way of understanding the potential scale is to compare replacement costs with salary.
For senior or specialist hires, replacement costs can reach 200%–250% of salary, according to the research referenced in our report.
So, for example, if a specialist technology professional earns £80,000, applying that range would put the potential replacement cost at £160,000–£200,000.
However, salary-based calculations still don't capture the full risk within a transformation environment.
If that person occupies a critical role in an ERP implementation, cloud migration, cyber programme or digital transformation, their impact may extend into delivery dates, contractor costs, technical debt, team productivity and benefits realisation.
A simple bad hire cost formula
There is no single standard bad hire cost formula that captures every organisation or role.
For technology programmes, a more useful way to think about it is:
Bad hire cost = direct hiring costs + replacement costs + lost productivity + additional delivery costs + cost of delay
That could include:
Direct hiring costs
Recruitment, onboarding and training.
Replacement costs
The cost of restarting the recruitment process and bringing a replacement up to speed.
Lost productivity
Both the employee's reduced output and the time other team members spend managing problems or correcting work.
Additional delivery costs
Contractor extensions, SI overages, additional governance, technical rework and remediation.
Cost of delay
The financial impact of postponed milestones and delayed business benefits.
This broader formula is particularly important for technology transformation because the person being hired isn't operating in isolation. Their performance can influence an interconnected programme with deadlines, dependencies and significant investment behind it.
The negative impact of a bad hire on your existing team
Some of the biggest costs aren't immediately visible on a balance sheet.
The report highlights hidden consequences including team burnout, loss of stakeholder confidence, reduced productivity, increased attrition, technical debt and rework.
There's also the management burden.
Senior technical staff can end up spending time managing weak performance and correcting issues rather than delivering value. The result can be reduced sprint velocity, slower decision-making, delayed releases and increased technical debt.
This is where the negative impact of a bad hire can begin to compound.
One hiring mistake creates more work for strong performers. Productivity falls. Pressure increases. Delivery starts to slip. Contractors are extended. Stakeholders become concerned.
The initial recruitment problem has become a delivery problem.
What can the cost of a bad hire look like on a technology programme?
To put the potential impact into context, our report models an illustrative three-month delay to a mid-sized UK technology transformation programme with 20–50 delivery staff and blended contractor/SI support.
The estimated total cost is:
£665,000–£2.255 million.
The calculation includes costs associated with:
- Contractor extensions
- SI overages
- Governance escalation
- Leadership time
- Delayed benefits realisation
- Additional rework and remediation
- Lost productivity
Importantly, this isn't presented as the cost of every bad hire. It's an illustration of how expensive a programme delay can become when capability problems contribute to delivery disruption.
And it demonstrates why the cost of a hiring mistake shouldn't be considered in salary terms alone.
Why do bad hires happen?
Hiring mistakes aren't necessarily the result of poor intentions or a lack of effort.
Technology programmes frequently need specialist skills quickly, creating pressure to get people through the door.
Our report identifies eight factors that can increase the likelihood of a poor hiring decision:
- Rushed hiring timelines
- Unclear role requirements
- Limited access to specialist talent
- Inconsistent interview processes
- Lack of market insight
- Regulatory bottlenecks
- Unrealistic hybrid expectations
- Overly technical job specifications
There is a common thread running through many of them: pressure.
The greater the pressure to fill a role, the easier it can become to compromise on assessment quality, role clarity or candidate fit.
Warning signs your organisation could be exposed to bad-hire costs
Hiring risk often becomes visible before a programme reaches a crisis point.
Some warning signs include:
- Critical vacancies remaining open for months
- Heavy reliance on contractors to maintain progress
- Interview processes varying between teams
- Candidates frequently declining offers
- Overloaded hiring managers
- Programme delivery slipping because of capability gaps
- Teams experiencing burnout or high attrition
- Cleared roles repeatedly failing to hire
If several of these are happening simultaneously, it may be time to look at hiring as a programme risk rather than simply an HR challenge.
Reducing the cost and risk of a bad hire
The aim shouldn't simply be to hire more slowly.
It should be to hire with greater certainty.
That starts with understanding the capability the programme actually needs.
For organisations embarking on major transformations, that means identifying which capabilities are missing, where delivery risk exists, which skills can be developed internally and where external expertise is required.
From there, organisations can introduce greater structure into hiring through technical assessment, market mapping, delivery track-record validation, programme-specific hiring, behavioural evaluation and stakeholder alignment.
Longer-term workforce planning, skills-gap analysis and upskilling can reduce reliance on reactive hiring altogether.
The true cost of a bad hire is the impact on delivery
The cost of a bad hire isn't simply the money spent recruiting the wrong person.
It's what happens next.
It's the time other employees spend picking up additional work. The contractor who needs extending. The milestone that moves. The rework that wasn't budgeted for. The stakeholder confidence that starts to disappear. And, ultimately, the business benefits that take longer to realise.
That's why organisations delivering complex technology programmes should treat hiring as part of their delivery strategy, not simply a recruitment activity.
At Talent Locker, we specialise in technology transformation recruitment, helping organisations secure experienced permanent, contract and project-based professionals for complex programmes.
Want the full analysis?
Download The Cost & Consequences of Hiring Mistakes in Technology Programmes for a deeper look at the cost of bad hires, programme delays, capability risk and the steps organisations can take to improve hiring outcomes.