The Real Reason Your Best People Leave (It Is Not Coaching)

Every so often, a version of the same concern surfaces when I talk to organisations about coaching. It is rarely said this plainly, but it sits underneath the conversation: if we invest in developing this person, are we not just helping them realise they would rather be somewhere else?

It is a fair thing to wonder – and there is enough truth in it that it deserves an honest answer rather than a defensive one. So let me make the case as plainly as I can, and then take the worry head on.

Who actually ends up in front of a coach

Let's start with who is in the room. Most people come to coaching late, and it tends to happen in one of two ways. When an organisation arranges coaching for someone, the decision to invest usually comes once the alarm bells are already ringing – when a capable person is visibly struggling, or when a promotion has not gone to plan. And when someone has no access to employer-sponsored coaching, they tend to seek it out themselves only once they have reached the point of no longer coping on their own.

So the group most associated with coaching is not a representative sample of your workforce. It is a subset of people who were already under real strain by the time anyone acted. If some of them go on to make a change, it is tempting to draw a straight line from the coaching to the exit. The more honest reading is that they came to coaching too late, carrying something that had been building for a long time.

This is fairly human. Things are fine until they are not, and we tend to reach for support once something needs repairing rather than offering it early, as a deliberate investment, while everything is still working. Coaching ends up being treated as a fix for a problem, when it has huge value as a pre-emptive form of support – building capability before the pressure arrives rather than after it has already done damage.

What coaching actually does

There is a second piece, and it matters just as much. My job as a coach is not to tell anyone what to do. It is to help a person understand what they genuinely want, which is harder than it sounds. Often I am listening for the inconsistencies in what someone says – the small contradictions that hint at a gap between what they truly want and what they think they are supposed to want. A great deal goes into unpacking those narratives. But the decision that comes out of it is always theirs. I am there to facilitate their self-awareness, not to steer the outcome, and I hold no attachment to which way they go.

Seen like that, coaching does not push anyone out of the door. What it does is help a person see their situation honestly and decide from a clearer place. Timing shapes what that looks like. When coaching arrives late, after months of quiet build-up, someone may already have made their mind up deep down without quite admitting it – and the work becomes helping them acknowledge what they have known for a while. When it arrives earlier, before that point of no return, a different conversation opens up entirely: what it would actually take to lead differently, and to grow into the role rather than away from it.

Why the belief sticks

If coaching does not cause people to leave, the belief still has to come from somewhere. I think it is a matter of what gets noticed. When coaching goes well, it rarely draws much comment, because a capable person continuing to do well is simply what everyone expected. But that expectation hides something: being great at the job is not the same as being great at leading, an assumption that quietly sets the problem up – which is part of how the problem starts. When someone makes the step up and keeps thriving, it is rarely raw talent alone carrying them. Real learning has happened in between, usually quietly, and it seldom gets the credit it is due.

When coaching is followed by someone handing in their notice, that sequence stands out, and it is easy to read it as cause and effect. It is the order of events that sticks.

The people you develop who leave anyway

This is the fair version of the worry, and it deserves a real answer: you cannot keep anyone forever. People have every right to choose what comes next for them. The question is what you are actually weighing.

Picture one of your strongest people – someone delivering brilliantly, the kind of name that comes up when you talk about the future. If you move them towards leadership without the support the move demands, you are exposed to a real chance of one of two outcomes:

1. They struggle, and eventually leave; or

2. they struggle and stay, quietly underperforming, with the strain spreading to the team around them.

That second outcome is the expensive one, because the cost is rarely contained to the individual. Gallup's research has found that managers account for 70% of the variance in how engaged their teams are, so a leader who has been stretched past what they were prepared for does not stay a private problem for long. The Chartered Management Institute puts a number on the fallout: half of people who rate their manager as ineffective plan to leave within the year, against 21% of those who rate their manager as effective.

Back that same person well, and the odds move in your favour. The same CMI research also shows that organisations investing in leadership development report, on average, a 23% increase in organisational performance and a 32% increase in employee engagement and productivity. Coaching is one of the more targeted forms that investment takes, working one-to-one on exactly the judgement and self-awareness a new leader needs – so it is no surprise that the reported figures on its payback are strong: the most cited study, run by the ICF with PwC, found a median return of seven times the investment. And when these people stay, the value compounds year-on-year.

And if, in the end, they still choose to move on, that is simply how working life (and life in general, for that matter) goes. They will have done excellent work for you in the meantime, and you will have reduced the risk of losing them rather than created it.

Supporting people does not raise the chance of an exit. Leaving them to struggle does.

What it comes down to

So here is the honest answer to the worry: coaching does not make your best people leave. What raises the odds of losing someone is the thing that often happens instead: waiting until signs are too loud to ignore, or never investing at all, and leaving a capable person to manage a transition they were never set up for. The real risk is not the coaching – it is everything that goes unaddressed while you wait.

If any of this resonates, and you are weighing how to support someone before the step up rather than after, get in touch and let's have a conversation about it.