In middle-distance racing, there is one abbreviation athletes dread more than last place:
DNF: DID NOT FINISH.
Not beaten: out of the race.
The working world has its equivalent, and it is more common than people admit.
According to several studies of managers and executives conducted over the past twenty years, about four in ten new roles end in failure within the first eighteen months: departure, dismissal, or being sidelined in practice.
Almost one in two.
For people who, in the vast majority of cases, had been carefully selected, were competent, and wanted to succeed.
So how do undoubtedly brilliant professionals fail?
The answer is unsettling, because it doesn’t look like what you imagine.
A failed transition doesn’t look like what you think
When we think “failure”, we imagine a spectacular mistake: the catastrophic decision, the public clash, incompetence exposed. That is almost always wrong.
In reality, a failed transition looks like a runner dropping off the pack: no fall, no cry, just a two-metre gap that becomes ten, then fifty, until the moment nobody is waiting anymore.
In practice, falling behind happens on three levels, rarely on that of technical skills:
- Cultural graft rejection.
It is the leading cause of failure for external hires.
The new leader applies the methods that brought them success elsewhere: their old pace, their old codes, their old decision-making style… without first decoding how things work HERE.
The organization reacts like a body facing an incompatible graft: no open conflict, but diffuse resistance, files that slow down, allies who never materialize.
In racing, it is the athlete running their previous race: replaying the strategy that won elsewhere, on a track where the pace, the wind and the opponents have nothing in common with it. - The mandate misunderstanding.
Nobody has the same definition of success.
The executive believes they were hired to transform; the shareholders wanted them to stabilize.
The manager thinks she must first repair the team; her own manager expects results next quarter.
This misunderstanding, almost never made explicit at the start, works silently for months and usually blows up at the first review, when it is very costly to correct. - Untreated isolation.
The vast majority of promoted managers receive no structured support when they take up their role.
Surveys of human resources professionals confirm it year after year, and the figure is even more striking for internal promotions, which the organization assumes are “already onboarded”.
Yet nobody tells the new manager what nobody ever tells a new manager (!): the awkward information, the games of alliances, the real reasons their predecessor left. With nobody to help decode, they are running blind.
What these three causes have in common is that none of them is about competence.
All of them are about reading the race.
That is why failed transitions are so baffling for those who live them: they ran well, but not the right race.

The 3 warning signs to watch for in the first month
The good news is that falling behind sends signals very early, long before it shows on the stopwatch.
Here are three, observable in the first thirty days.
They don’t predict failure: they indicate that the race is being decided without you.
Sign 1: nobody can tell you what success will look like in a year.
Take the test in your first month: ask your manager, then one or two key players, separately, what will make people say in twelve months that your appointment was the right decision.
If the answers are vague (“we’ll see”, “that things go well with the team”) or, worse, contradict one another, you have the most reliable warning sign there is: the mandate misunderstanding is already in place, and it is only waiting to grow.
> The remedy is simple but demanding:
Force the clarification now, in writing, even if the conversation is uncomfortable. A misunderstanding costs ten times less in month 1 than in month 10.
Sign 2: you haven’t heard any bad news yet.
A month after you arrived, everyone is pleasant, every file is “going well”, no serious problem has been brought to you.
That calm isn’t good news: it is a sign that information is being filtered before it reaches you.
Every organization has problems; if you can’t see them, it is because people don’t trust you enough yet to show them to you, or would rather let you discover them too late.
> The remedy:
Actively go looking for bad news (“what is likely to blow up in my face in six months?”) and, above all, take care with how you react to the first real alert. The way you receive the first piece of bad news determines how many more you will receive afterwards.
Sign 3: your calendar is filled entirely by other people.
Look at your calendar for the week: what proportion of the meetings are there because YOU decided so?
If the answer is “almost none”, if your days are a series of inherited meetings, requests and other people’s emergencies, you are being swept along by the race instead of reading it.
It is the most mundane and most underestimated sign: the manager overwhelmed from the first month has neither the distance to map the terrain, nor the time to build alliances, nor the space to prepare their first victories.
> The remedy comes down to one discipline:
From the first week, block out non-negotiable weekly time slots for observation and reflection.
And defend them like meetings with your most important stakeholder.

The fourth sign, the one that comes later
We need to add a truth that statistics tell poorly: most failures aren’t decided in the first month; they are prepared there.
Falling behind becomes visible much later, in that zone between months 6 and 18 we have already talked about: after the sprint of the first 100 days, when the organization’s attention drops, the heavy files arrive and the grace period is over.
That is what makes these failures seem so unfair: on day 90, everything looked off to a good start.
But the three ignored signs (the vague mandate, the filtered information, the calendar run by others) kept working underground.
- The mandate misunderstanding blows up at the first review.
- Filtered information becomes the crisis nobody saw coming.
- The calendar run by others becomes the exhaustion of month 8.
A transition almost never fails all at once; it fails through an accumulation of gaps that were never corrected: two metres, then ten, then fifty.
Conclusion: watching for these signs isn’t a one-month task, it is a racing discipline.
1500-metre runners check their split times on every lap, not just the first.
Take the three-sign test again in month 4, month 8 and month 12. These are your intermediate times.And the real question isn’t “Will I be one of the 40%?”.
It is: “Who around me will tell me I’m dropping off the pack while there is still time to catch up?”
More questions about failed transitions
Where does the figure of 40% of failed transitions come from?
Several studies of managers and executives since the 2000s, particularly in North America, converge on failure rates of 30 to 50% within the first eighteen months, depending on the level of the role and how failure is defined (departure, dismissal, performance judged insufficient).
The exact figure varies from one study to another; the order of magnitude, however, is remarkably stable, and that is what should sound the alarm, both for people taking on a role and for the organizations that welcome them.
Is a failed transition always the person’s fault?
No, and this is an essential point.
Both research and field experience show that most failures are systemic: a poorly defined mandate, no support, an unspoken culture, a predecessor still on the premises.
The organization and the person share responsibility for success.
That is also why companies that structure the onboarding of their managers (sponsorship, checkpoints, Leadership Transition Coaching) significantly reduce their failure rates.
Can a transition that got off to a bad start be turned around?
In most cases, yes, provided you act early and name the problem.
A vague mandate can be clarified, a calendar run by others can be taken back in hand, a damaged relationship of trust can be repaired if you tackle it before it sets.
The decisive factor is timing: gaps are easy to correct in the first six months, hard after the twelfth, once judgments have been formed.
If you feel yourself falling behind, the worst strategy is the one most often chosen: working harder in silence.
What are the signs that a transition is going well?
Three clues are worth more than any dashboard:
- people bring you bad news spontaneously (trust is flowing),
- you and your manager describe success the same way (the mandate is aligned),
- a growing share of your calendar reflects your priorities rather than other people’s (you set the tempo instead of having it imposed on you).
If these three clues are green by the sixth month, you are running in the right group.



