Why Good People Leave Successful Teams

There is a particular kind of people problem that is easy to miss because the obvious numbers still look healthy.

If revenue is on target, our clients are being looked after, and we're meeting our deadlines, what's the problem? The leader in question is clearly productive, capable, and commercially important.

And yet people keep leaving.

Not everyone, of course. Often it shows up in a quieter way first. A promising new starter is gone within a year, and a good middle manager looks flat and exhausted. Exit interviews can be helpful, but many leavers use vague language like “not the right fit” or “not what I expected”. Nobody can quite point to one dramatic event, but everyone close to it can feel that something is off.

This matters because employee turnover is one of the few people problems you cannot completely hide. Whilst you can (temporarily) ignore issues with morale, or tension, and even explain away a difficult manager as simply "having high expectations", when capable people keep joining and then leaving within a short space of time, that is usually telling you something important.

I think we often label it a recruitment issue because it is the least awkward answer. It lets us talk about hiring, process, and market conditions instead of talking about what it is actually like to work in a team once somebody has joined. The trouble is, repeated turnover rarely stays in the recruitment box for long.

In the UK, 41% of employers say they have seen new employees resign within the first 12 weeks of starting (source), which should make any organisation pause before blaming “this generation” or a weak candidate pool. Research also suggests that 32% of voluntary turnover is preventable through better management and communication, which means a fair chunk of attrition is not inevitable at all.

That is the harder conversation.

Because once turnover stops looking like bad luck, it starts looking like feedback.

And in professional services, charities, housing, and other people businesses, that feedback can point somewhere awkward. It can point to the person who is delivering financially while quietly costing the organisation far more than anyone wants to admit.

Law firms are a good example because the numbers are stark. UK law firms are dealing with average staff turnover of around 20%, and for SME firms the cost of attrition has been estimated at roughly £315,000 a year (source). In larger firms, annual attrition costs can run beyond £1 million. Those are the hidden costs of attrition that many firms still normalise, it's serious money disappearing because “it's just the way things are”.​

What concerns me more is what sits underneath those numbers. The Financial Times found that over half of associates in major UK law firms described their stress levels as unmanageable, while 75% of partners said they were content in their roles (source). Sit with that for a moment. The people with the least power are under the most strain. The people with the most power feel broadly fine.​

That gap tells us a very clear story.

It suggests...

• that a team can look successful from the top while feeling unsustainable from the middle and the bottom.

• that performance data, on its own, is a poor measure of leadership quality.

• that some leaders are being assessed almost entirely on what they produce, not on what it costs the people around them.

That is also not a legal-sector issue only. It shows up anywhere technical excellence is valued more highly than people leadership. Accounting firms see it. Housing organisations see it. Membership bodies and charities see it too, especially when a respected expert or long-standing senior person has built a reputation that nobody wants to challenge.

Usually, everyone knows who this article is about.

They know which team cannot keep hold of good people, where the tension sits, and which leader gets results but leaves a trail of stress, caution, or emotional wear and tear behind them. What they do not know is how to talk about it without sounding personal, political, or disloyal.

So the internal script starts.

“But they bring in the work.”

“They’ve always been like that.”

“They’re not there to be liked.”

“It’s a demanding sector.”

“People need to toughen up.”

This is where organisations get stuck. Because those statements contain just enough truth to shut the conversation down.

Yes, some roles are demanding. Yes, some sectors are under pressure. Yes, not every manager needs to be warm and polished. But none of that changes the basic question: if one person’s commercial success is regularly followed by churn, stress, short tenures, or a team nobody wants to join, is that really success?

That is the question many organisations avoid for far too long.

Part of the problem is structural: people often move into management because they were good at the technical job before it, and a large study of 53,035 sales employees found exactly that pattern (source). Strong individual performers were promoted, but better pre-promotion sales performance predicted weaker team performance afterwards. That finding will not surprise many people reading this. Being excellent at doing the work is not the same as being good at leading people through the work, yet organisations still blur the two all the time.

That would be difficult enough on its own. But then add this: 82% of new managers receive no formal management training (source). So the person who was promoted for being technically strong is now expected to manage pressure, feedback, delegation, motivation, conflict, and development with little or no knowledge of how! Sometimes they cope, sometimes they do not, and often they keep performing personally while the team around them slowly pays the price.​

This is why turnover should be taken seriously as an organisational clue.

Not every resignation is a red flag and not every short tenure means a manager is failing, people leave for all sorts of reasons. But patterns DO matter. If talented people are leaving within 18 months, especially from the same teams or under the same leaders, it is worth resisting the easy explanations. It may not be about pay or how resilient they are. It may not even be about recruitment.

It may be that the day-to-day experience of working there feels harder than it should.

It may be that expectations are unclear, support is inconsistent, or pressure is being handled badly.

It may be that the people at the top are looking at output, while the people underneath are living with the consequences.

Good organisations notice this earlier. They do not wait until turnover becomes normal, and they do not comfort themselves with having strong income while good people disappear out of the side door. They pay attention when one team is always tired, when one manager is always hiring, when one department cannot keep the people it worked so hard to recruit.

Because sometimes the clearest sign that something is wrong is also the easiest one to explain away.

A resignation here, a short tenure there, another stressed team member gone.

Then the pattern repeats. And at some point, somebody needs to ask the harder question.

What are we hiding?