The True Cost of Underdeveloped Leaders
"We can't afford leadership development right now." How familiar is that phrase? Or maybe “It’s not the right time”. You've either said it or heard it said. The budget's tight, there are more pressing priorities. Maybe next year, when things have settled down, when we're not firefighting, when we have more headroom.
For now, leadership development is discretionary spending. A nice-to-have, something to invest in when you can afford it. What you don’t realise is you're already paying for leadership development. You're just paying differently; through turnover, sick leave, grievances, productivity loss, and reputational damage instead of through intentional investment.
You're already spending, you’re just getting the worst possible return.
The cost of leadership development isn't "development vs no development." It's "deliberate investment vs hidden costs."
Every organisation invests in leadership. Some do it deliberately through structured programmes, coaching, time, and money allocated specifically to building capability. Others pay through the consequences of not developing their leaders. Through the compounding costs of poor management that show up in a dozen different budget lines, none of which get tracked back to their actual source.
You think you're saving money by not investing in development. You're not, you're just moving the cost somewhere less visible.
What undeveloped leadership costs
Let's put some actual numbers on it
Recruitment costs
The saying is true: people don't leave jobs, they leave bad managers. According to research from Gallup, managers account for at least 70% of variance in employee engagement. And disengaged employees are more likely to leave.
The cost to replace an employee is typically estimated at 50-200% of their annual salary, depending on seniority and specialisation. For a mid-level employee earning £40,000, that's £20,000-£80,000 per replacement.
That includes:
Recruitment costs (advertising, agency fees, interview time)
Onboarding costs (training, reduced productivity during ramp-up)
Lost productivity while the role is vacant
Lost institutional knowledge
Impact on team morale and remaining workload
Now multiply that by the number of people who've left due to poor management in the past year.
How many exit interviews mentioned "my manager" as a factor? How many people left because they weren't developed, weren't supported, weren't managed well?
It’s not an HR problem. It’s the leadership development problem you're already paying for.
Productivity loss from disengagement
Underdeveloped leaders don't just lose you people. They lose you productivity from the people who stay.
Research from employee benefits platform Perkbox estimates that disengaged employees cost the UK economy more than £340 billion every year People Management in lost training and recruitment costs, sick days, productivity, creativity, and innovation.
And what creates disengagement? Poor management.
Leaders who can't delegate effectively create bottlenecks. Leaders who avoid difficult conversations let performance issues fester. Leaders who don't know how to develop their people cap their team's potential.
You're not just paying salaries to people who are underperforming. You're paying salaries to people who could perform at a higher level if they were properly led.
How much productivity are you losing because managers don't know how to manage?
Presenteeism and sick leave
A cost that rarely gets connected back to leadership is the health impact of poor management.
Research consistently links poor management to increased stress, burnout, and mental health issues among employees. The Health and Safety Executive estimates that work-related stress, depression, or anxiety accounted for 17.1 million working days lost in 2022/23 in Great Britain.
The primary cause of work-related stress is poor management practices. When managers don't communicate clearly, when they micromanage, when they fail to provide support or recognition, when they create toxic team dynamics people get sick.
Presenteeism (employees at work but operating at reduced capacity due to health issues) is estimated to cost UK employers £15.1 billion per year, significantly more than absenteeism.
You're paying for this through your sick leave budget, through reduced productivity, through occupational health referrals.
Essentially, because you think you "can't afford" to develop your leaders properly.
Management time spent on performance and grievance issues
Think about how much time HR and senior leadership spend on:
Performance management processes that should have been handled earlier
Grievances that arose from poor management
Mediation between managers and their teams
Disciplinary procedures
Bullying and harassment investigations
Every one of these issues takes up hours, and sometimes weeks, of management time. Time that could have been spent on strategic work, development, or actually moving the business forward.
What's the opportunity cost of your senior leaders spending days dealing with issues that competent middle management should have prevented?
Reputational damage
This one's harder to quantify, but it's real.
Poor management shows up on Glassdoor. It shows up in candidate experience. It shows up when your best people leave and tell everyone in their network why.
How much does it cost you when talented candidates turn down offers or withdraw from the process because they've heard your management is terrible? How much does it cost when clients notice high turnover in their account teams? How much does it cost when your employer brand becomes "they don't develop their people"?
Reputation takes years to build and months to damage and underdeveloped leadership damages it every single day.
“We'll develop them when we have more budget” is backwards thinking
The flaw in this logic is that you're waiting for things to improve so you can afford to invest in the thing that would actually improve them. You're saying "we'll invest in leadership development when we're not hemorrhaging money" while the underdeveloped leadership continues to hemorrhage money.
It's like saying "I'll fix the leak when I can afford the water bill."
The leak is the problem. The water bill is the consequence. Waiting doesn't make either one better, it makes both exponentially worse.
The cost of development versus what you’re already spending
A comprehensive leadership development programme (not a one-day workshop, actual development over 6-12 months with coaching, peer learning, and ongoing support) costs approximately £2,000-£5,000 per person, depending on scale and delivery model. For a cohort of 20 middle managers, that's £40,000- £100,000.
Sounds expensive? Compare that to what underdeveloped leadership is already costing you:
One senior employee leaving due to poor management: £30,000-£80,000 in replacement costs
Five employees operating at 70% productivity due to disengagement: conservatively £50,000+ in lost output annually
Increased sick leave and presenteeism: difficult to isolate, but factor in several thousand pounds per affected employee
Management time on grievances and performance issues: hundreds of hours at senior day rates
Reputational damage affecting recruitment and retention: ongoing and compounding
Even if you prevent just two people from leaving, you've paid for the development programme. If you increase team productivity by even 10%, you've more than covered the investment. If you reduce the management time spent on avoidable issues by even a fraction, it's worth it.
Leadership development isn’t an expense - it’s an investment with a measurable, positive ROI. “We can’t afford it” usually means “we haven’t worked out what it’s costing us not to”. Organisations that say they can't afford leadership development haven't done the maths.
They haven't calculated:
How many people have left due to poor management
How much productivity they're losing to disengagement
How much management time is consumed by avoidable issues
How much their employer brand is suffering
How much it's costing them in sick leave, presenteeism, and health-related issues
They just know the development programme has a visible price tag. And that price tag looks high when you're not comparing it to anything else. When you calculate what underdeveloped leadership is costing you, the development programme starts to look like a bargain. You’re going to pay either way.
You don't get to choose whether or not to invest in leadership because you're already investing. Every single day, whether it’s through turnover, lost productivity, management time, sick leave, grievances, or reputation.
The choice you have is whether you invest intentionally, through structured development that builds capability and prevents problems or whether you keep paying through the consequences of not developing your people.
One gives you a return. The other just comes with costs.
Think you can't afford leadership development? Calculate what your underdeveloped leaders are costing you first.
Before you say "we can't afford leadership development," do the maths.
Calculate what you spent last year on:
● Replacing employees who left due to management issues
● Management time dealing with performance problems and grievances
● Productivity loss from disengaged teams
● Sick leave and occupational health related to work stress
● Recruitment costs driven by poor retention
Add it up. Really, sit down and look at the accounts. Add it up. Then compare that number to what it would cost to properly develop your leaders.
Do this and you've just done what most organisations never bother to do. If the number you reached is bigger than you expected, that's where we start. We work with organisations to identify where underdeveloped leadership is creating costs and then build programmes designed to close that gap specifically. Not off-the-shelf training, development tied to your specific problems. Book a cost conversation focused on the numbers instead of the sales pitch.