Why People Leave Managers, Not Companies
People leave managers, not companies. Most of us have lived some version of it: you join somewhere you were genuinely excited about, a new manager arrives, and within a few months you watch your own enthusiasm plummet, because you feel threatened or diminished rather than supported. The organisation has not changed at all. One relationship has, and it turns out that one relationship is most of the job.
That is usually related to lower emotional intelligence, to the absence of leadership training, and to personal blind spots that are often linked to insecurity. It is worth asking the training question honestly before assigning any blame: how many first-time managers are ever trained on how to manage people?
Why the manager is the variable
People leave managers rather than organisations because the manager, not the employer brand, controls almost everything that determines daily experience: how work is assigned, how mistakes are handled, whose contribution gets seen, and whether it is safe to be honest.
Gallup's State of the American Manager (2015), drawing on engagement data from 27 million employees, found that managers account for at least 70% of the variance in engagement scores between business units, and that one in two employees had left a job to get away from a manager. The phrase itself goes back to Marcus Buckingham and Curt Coffman's First, Break All the Rules (1999), and it has survived twenty-five years of restructuring largely intact, because the mechanism is simple. People can tolerate a difficult strategy or a slow quarter. What they cannot sustain is spending forty hours a week with someone who makes them feel smaller than they are.
How insecurity actually shows up
Insecurity rarely shows up as insecurity at work. Nobody says out loud that they feel threatened by a capable person in their team. It comes out sideways, in behaviours that each have a respectable explanation available, which is exactly what makes them so durable. It often appears as:
Feedback that sounds growth-oriented but feels diminishing. The content is usually defensible, so the person receiving it leaves smaller and cannot quite say why, which means they cannot raise it either.
Questions that carry judgment rather than curiosity. "Why would you approach it that way?" is deniable by design: the words are neutral and the meaning is not.
Micromanagement, explained as high standards, and usually driven by discomfort with not being the best-informed person in the room.
Snark remarks disguised as humour, which is the trickiest of the four.
The last deserves particular attention, because it is both the most corrosive and the most defensible. A joke at someone's expense in front of their peers does something direct criticism does not: it makes the audience complicit, and it leaves the target with no acceptable response. Objecting would require them to announce that they have no sense of humour, so they laugh, and the room learns what is permitted here.
None of this requires bad intentions. It requires only that somebody feels less secure than they appear and has never been given a mirror. Words Create Worlds looks at the inner language underneath it, which is usually harsher toward the manager than toward anyone reporting to them.
Blind spots, not bad intentions
Many managers do not intend to undermine their teams. When self-awareness is missing, blind spots take over.
In leadership programmes, the managers described above are almost never the ones who recognise themselves, and that is arithmetic rather than denial. Tasha Eurich's research (Harvard Business Review, 2018) found that while roughly 95% of people believe they are self-aware, only 10% to 15% actually are. Intention is not the variable that matters here, because your team does not experience your intentions. They experience your behaviour, and they calibrate to it. Why Emotions Are Key To Leadership Success sets out why emotional intelligence separates effective managers more reliably than technical skill does.
The training gap compounds it. People are promoted for being excellent at the work, then handed a completely different job with the same title attached. A newly promoted manager arrives with real expertise, no training in giving feedback, no framework for delegation, no language for difficult conversations, and an entirely reasonable fear of being exposed. The four behaviours above are what that combination produces under pressure, which is why Doing Hard Things The Human Way is really about that transition.
What tolerating it costs
The fastest way to discourage good people is to tolerate corrosive ones.
Tolerance is never read as neutrality. When a senior person's behaviour is visibly costly and visibly unaddressed, everyone watching draws the obvious conclusion about what the organisation actually values, whatever the values statement says. The strong performers do not complain. They quietly recalibrate how much of themselves they are willing to invest, and then they go somewhere else.
The research on the cost is not subtle. Christine Porath and Christine Pearson (Harvard Business Review, 2013), drawing on data from more than 14,000 people, reported that 98% had experienced uncivil behaviour at work, and that by 2011 half said they were treated rudely at least once a week, up from a quarter in 1998. Bennett Tepper's work on abusive supervision (Academy of Management Journal, 2000) traced the substantial effects on commitment, wellbeing and turnover.
If you see this in your team, it is your responsibility to end it. That means a direct, specific and unpleasant conversation, held early, about behaviour rather than personality. Not hoping it self-corrects, and not moving the people who are suffering. Giving Feedback: Are You Focused On Justice Or Growth? is worth reading first, and teaching a management layer to hold those conversations well is what the accountability and feedback work at AstraZeneca was for.
A practice for reading your own feedback
If you are a leader, watch what feedback reaches you and what it is telling you about your own blind spots. Ten minutes, best done in writing.
Write down the last three pieces of critical feedback you received about how you work with people, including the ones that arrived as a joke. If you cannot find three, that absence is the finding.
For each one, write the explanation you gave yourself at the time. Most of us have a standard defence about context, workload or the other person's sensitivity.
Set the explanation aside and write only the behaviour that was described. Strip out the intention, since your team never had access to it anyway.
Ask which of those behaviours you would find difficult to work under if it came from your own manager.
Choose one, tell someone in your team you are working on it, and ask them to tell you when they see it.
Leaders who do this are usually surprised twice: by how little critical feedback reaches them, and by how quickly it increases once people see that it is genuinely wanted.
What this asks of you
If you manage people, the useful question is not whether you are a good manager. It is what your team would say about you when you are not in the room, and whether you have made it possible for any of that to reach you directly.
If you manage managers, everyone in your organisation already knows which behaviours are tolerated here, and they learned it by watching what happened, or did not happen, the last time someone crossed a line.
Building emotionally intelligent management is teachable work rather than a matter of personality, and most of it happens in leadership workshops with the management layer itself. Get in touch if that is the layer you are worried about.