Most organisations can point to at least one leader who consistently delivers results while leaving a wake of frustration behind them. They are sharp, driven, and often indispensable. They are also difficult, dismissive, and, at times, corrosive.
These individuals are what Karlie Cremin, the CEO of DLPA and Crestcom ANZ, likes to call ‘brilliant jerks’. While their capability may be undeniable, the assumption that their behaviour is a tolerable trade-off for their brilliance is where many businesses go wrong.
The real cost of these leaders is rarely immediate or obvious. It builds quietly, showing up over time in ways that are harder to measure but far more damaging.
Why organisations tolerate them
At a glance, the case for keeping a high-performing but difficult leader can seem rational. They hit targets. They move quickly. They push standards higher. In high-pressure environments, that can look like exactly the type of person the business needs.
The problem is that the qualities we consider necessary to be a ‘high performer’ are being assessed too narrowly.
When leadership is reduced to outputs alone, behaviour becomes a secondary consideration. And that is how you end up with leaders whose results justify their questionable conduct. Over time, this creates a culture where capability excuses poor judgment, and where impact on people is overlooked in favour of short-term gains.
The problem is that this is not a leadership strategy — it’s a cultural and organisational risk.
The hidden impact of brilliant jerks
The influence of a ‘brilliant jerk’ is rarely confined to their own behaviour or even their own team. It spreads through workplaces and systems in subtle but significant ways, and this is how the brilliant jerk slowly erodes culture.
Retention is often the first casualty. High-performing employees are the least likely to tolerate a leader who undermines or disregards them, because they know they can find employment elsewhere. But when they leave, they take capability, relationships, and institutional knowledge with them.
Brilliant jerks also erode trust. Teams led by unpredictable or overly critical leaders tend to operate defensively, causing people to withhold ideas, avoid difficult conversations, and focus on self-preservation rather than contribution.
Finally, when brilliant jerks are left unchecked, collaboration suffers. Over time, staff realise that working with them is too difficult or taxing, so teams may limit engagement to avoid conflict. This not only lowers team morale but also causes staff to start working in silos that hinder productivity — all to avoid one difficult person.
Perhaps most concerning, though, is the long-term cultural effect. Behaviour that is rewarded, or at least not addressed, becomes embedded in an organisation. When a brilliant jerk receives a promotion, for example, it tells staff that poor conduct is acceptable. Future leaders go on to observe what is tolerated and replicate it, believing it to be part of the path to success.
The leadership gap behind the behaviour
It’s easy to frame these leaders as the problem. In reality, they are often a symptom of a broader issue.
Many organisations still promote individuals based on technical expertise or individual performance, without equipping them to lead people. For most people, however, the transition from doing the work to leading others through it requires training, support, and guidance.
Without the right development, even capable individuals can default to behaviours that prioritise control over connection. Under pressure, this can manifest as impatience, poor communication, or an over-reliance on authority.
These are not personality flaws as much as capability gaps. Leadership is not an inherent trait; it is a skill set that requires deliberate practice, feedback, and refinement. When organisations promote high-performing individuals without nurturing their leadership capabilities, brilliant jerks are born.
Moving from tolerance to accountability
Eliminating the impact of ‘brilliant jerks’ is not about removing high performers. It is about holding all leaders to a broader standard of performance.
This starts with clarity in the form of explicit expectations around behaviour, communication, and team impact. Too often, organisations passively imply their expectations, leaving staff to use their own judgement to determine what is okay and what isn’t. Getting explicit removes the grey area and holds people to a higher standard.
It also requires measurement. Leadership effectiveness should include indicators such as team engagement, retention, and cross-functional collaboration, not just financial or operational results. The only way to get a clear picture of how your organisation is performing is to track these metrics the same way you would any other area.
Development also cannot be overlooked. Leaders need access to practical tools to improve how they communicate, make decisions, and manage pressure. This is not achieved through theory alone, but through ongoing application and feedback that allows them to constantly evolve and better their leadership skills.
Finally, organisations must be willing to act. That means not turning a blind eye to the brilliant jerk, no matter how brilliant they may be. When behaviour consistently undermines performance, it cannot be overlooked, regardless of individual output.
The cost of doing nothing
The idea that a difficult but capable leader is ‘worth it’ has never been more outdated. In a competitive talent market, culture is increasingly becoming the differentiator for organisations. Employees are more selective than ever about where they work and who they work for, which means organisations must cultivate higher standards for the people who influence culture the most: leaders.
The alternative is not lowering standards. It is raising them. Because true leadership is not just about what gets delivered; it’s about how it gets delivered, and the impact it leaves behind.
