When senior leadership becomes siloed, it’s rarely because those leaders don’t care. The silos exist because teams lack the space and the permission to examine how they lead together.
Leaders at the top of organisations are typically highly capable, experienced, and deeply committed. Yet many executive teams remain fragmented: operating effectively as individuals, but inconsistently as a collective. Decisions slow down. Tensions surface sideways. Alignment is assumed rather than tested.
The issue isn’t a lack of talent. It’s a lack of collective leadership practice.
Why do silos persist at senior level?
Recent research reinforces a familiar pattern: senior teams struggle with collaboration in complex conditions.
The World Economic Forum Future of Jobs Report (2025) highlights collaboration, systems thinking, and leadership alignment as critical capabilities for organisations navigating volatility and AI-driven change. Yet these are precisely the skills least practised at executive team level.
Similarly, McKinsey’s latest Future of Work research shows that, while individual executive performance remains high, collective decision quality and speed decline when leadership teams fail to adapt how they work together in times of uncertainty.
In my work with executive leaders and teams, several patterns show up repeatedly:
1. Individual accountability outweighs collective responsibility
Senior leaders are rewarded for owning their remit, delivering outcomes, and protecting their domain. Over time, this unintentionally reinforces “my priorities” over “our outcomes” even when collaboration is explicitly valued.
2. Psychological safety decreases as seniority increases
While junior teams are encouraged to speak up, senior leaders often feel the opposite pressure: to appear certain, decisive, and in control. Google’s Project Aristotle famously identified psychological safety as the strongest predictor of team effectiveness. However, it is frequently weakest where visibility, ego, and risk are highest. As Amy Edmondson notes, fear inhibits learning, and learning is the engine of performance.
3. Time is spent on content, not on how decisions are made
Executive meetings focus heavily on what needs to be decided, but rarely on how decisions are reached. Patterns of interaction and communication – who speaks, who defers, who challenges – go largely unexamined, even when they undermine speed and quality.
4. Conflict goes underground
Disagreement does not disappear at senior level, it simply becomes quieter. McKinsey and WEF research consistently shows that unresolved tension leads to slower execution, risk aversion, and siloed behaviour. When conflict is not addressed constructively, it erodes trust and collective ownership.
What are the hidden costs of leadership silos?
When senior teams operate in silos, the organisation feels it quickly:
• Strategy fragments in execution
• Decisions slow down or are revisited repeatedly
• Teams receive mixed signals about priorities
• Trust erodes, even when performance still looks strong on paper
Most critically, leaders stop learning with and from one another. The team loses its capacity to think collectively in moments of complexity and disruption — precisely when it is most needed. As Peter Drucker observed, the most important elements of communication are often what remain unsaid. At the senior level, what goes unspoken shapes outcomes more than what appears in the minutes.
What works: From individual excellence to collective performance
Breaking leadership silos does not require another restructuring or a strategy offsite filled with presentations. What works is intentional team coaching – not as a one-off intervention, but as an ongoing leadership discipline.
Effective team coaching creates:
• A safe space to examine how the team leads together
Not personalities or competence, but patterns: how decisions are made, how challenges are voiced, how power and influence are used.
• Shared ownership of outcomes
The focus shifts from “my function” to “our impact,” strengthening accountability at the collective level.
• Productive, healthy tension
Psychological safety is not about being nice. It is about creating conditions where challenge is possible without damaging trust.
• Clear agreements on ways of working
High-performing senior teams are explicit about how they communicate, decide, and hold one another accountable, especially under pressure.
The real shift
The most powerful moment in team coaching often comes with a simple realisation:
“We’ve been performing as a group of strong leaders. Not as a leadership team.”
When senior teams move from individual excellence to collective leadership, silos dissolve naturally. Not because leaders try harder but because they start leading together.
A reflection for senior leaders
When was the last time your leadership team paused to examine how you lead together – not just what you deliver?
That conversation is often the difference between a group of high performers and a truly high-performing team.
Eileen Coupin is an Executive Coach at TPA, working with senior leaders and leadership teams navigating complexity, growth, and change. She brings extensive international leadership experience across global organisations and industries including banking, start-ups, public policy, and education.
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