You care about your people. But do you know what it actually costs when they're overloaded?

You know your team has been under serious pressure for a while now.

Someone has said it's too much. Another calls in sick more often. A third is working hard but slowly losing focus. The dynamic has shifted — people are more withdrawn, there seems to be less space for connection. You see it, you feel it, but you can't quite put your finger on it.

And you want to do right by them. For your people and for your results.

What most leaders don't realise, however, is what that overload actually costs them. Not as a feeling — in concrete numbers.

That's exactly what I want to show you in this article.

Overload isn't just an HR problem. It's a financial risk.

We tend to talk about work-related overload as if it's primarily a wellbeing issue. And it is — your people's wellbeing matters. But overload carries a price tag that most organisations have never fully calculated.

There are three major cost categories. Each one is significant on its own. Together, they're rarely visible on a single overview.

1. Absenteeism: the bill everyone knows but underestimates

TNO reports that psychosocial workload — including work pressure and stress — is one of the leading causes of work-related absenteeism in the Netherlands.

Psychological absence lasts longer on average than physical absence, recovery is more complex, and the risk of relapse is higher when the underlying causes aren't addressed.

TNO calculated that work-related stress costs the Dutch economy over €3 billion annually. At an organisational level that sounds abstract. At the individual level it's painfully concrete.

The costs come in two forms. The direct costs are the easiest to see: continued salary payments, employer contributions, occupational health services, reintegration, and replacement. But the indirect costs are just as large — and consistently underestimated in practice. Lost billable hours, project delays, increased pressure on colleagues, management time, quality loss, client impact.

For long-term absence due to overload or burnout, the total bill quickly reaches €60,000 to €250,000+ per employee. Per person. Per incident.

For knowledge workers and consultants, these costs are often even higher due to the loss of billable capacity and the personal nature of client relationships.

2. Turnover: the bill everyone forgets

Sustained work pressure and chronic stress increase the risk of employees leaving.

For knowledge workers, prolonged mental load frequently leads to reduced engagement, emotional exhaustion, cynicism, and ultimately departure. Research consistently shows that high workload and burnout symptoms are strongly associated with increased turnover intention.

When people leave because they've been carrying too much for too long, the visible damage is only the beginning.

The cost of turnover for a knowledge worker is internationally estimated at between 50% and 200% of annual salary. Take an employee with total employment costs of €90,000. Their departure can easily cost you €90,000 to €135,000 — and that's not an extreme scenario.

Those costs come from four directions.

Recruitment: hiring, selection, management time, sometimes a headhunter — for a senior profile easily €15,000 to €25,000.

Onboarding loss: a new employee typically isn't fully productive for 3 to 9 months, while you're paying the full salary.

Team impact: the work falls back on the rest, the team that was already under pressure faces even more, and the likelihood of another person burning out increases.

Bilability: in consultancy or knowledge-intensive work, there's billability to add: client relationships that are person-dependent, hours that disappear, projects that stall.

The impact is almost always broader than it appears at the moment someone walks out the door.

3. Performance loss: the bill nobody sees

This is the silent cost category — and likely the largest.

Overloaded employees who show up to work are no longer performing fully. They make more mistakes, are less creative, make worse decisions. They're less present in meetings, less sharp in client conversations, less proactive in their work. This is called presenteeism: physically present but cognitively and emotionally no longer fully available.

Research suggests this can account for up to 30% of productivity loss — without a single sick day being recorded.

This doesn't show up in an absenteeism figure. But it quietly erodes the quality of the work being delivered, day after day.

Why is this so hard to address?

The problem isn't that leaders don't want to act. The problem is that they can't see it.

Most leaders have no objective picture of how their team is holding up physiologically. No number that shows how close someone is to the edge. No signal that says: this is the moment to intervene.

And without that picture, you're always reacting too late. Performance loss begins before an employee even realises they're overloaded. By the time it becomes visible — someone burns out, someone says they can't continue — the damage is already done.

The first step is understanding what the current situation is already costing you. Because once that number is on the table, the conversation changes.

The Workload Impact Calculator

I've developed a calculator that makes the financial impact of overload concrete — for your team, in your situation.

Based on your team size, salary levels, and other variables, we calculate together what the current situation is costing you and what early intervention would yield.

I do this deliberately together with you, not as a tool you fill in on your own. The outcome is a number, but the value lies in the conversation around it. What are you already seeing? What do you recognise? And what would it mean if you could act sooner?

Want to know what overload is costing your team right now?

Get in touch to schedule a conversation. We'll calculate it together.

In 45 minutes, you'll know what the current situation is costing you — and what you can do to change it.

Send me a message to schedule a call: tessavannes@kpnmail.nl

Sources: TNO Arbobalans, Gallup Employee Wellbeing & Productivity, Deloitte Human Capital Trends, SHRM Cost of Employee Turnover, CBS Dutch Absenteeism Statistics, European research on presenteeism and productivity loss.