The Competence Trap: When Being the Best at Your Job Isn't Enough to Make You a Great Leader

Why the transition from individual excellence to leadership requires more than a promotion—and what organizations can learn from employees who successfully make that journey.

By Mike Kehoe | Leading Through the Algorithm™

There is an interesting paradox in how organizations develop their future leaders. An employee demonstrates exceptional performance, consistently exceeds expectations, and becomes someone the organization depends upon. Their work ethic, technical knowledge, and commitment distinguish them from their colleagues. Eventually, their accomplishments are recognized with a promotion into management.

It is often a moment of tremendous professional pride. Years of dedication have created an opportunity for greater responsibility, increased compensation, and career advancement. Yet what happens next can reveal one of the most overlooked challenges in organizational leadership.

The abilities that made someone exceptional at performing a job are not necessarily the same abilities required to lead the people performing it.

This distinction is important because organizations frequently treat promotion as the natural reward for individual excellence. The strongest salesperson becomes a sales manager. The most knowledgeable technician becomes a supervisor. The employee who consistently delivers outstanding operational results becomes responsible for an entire team.

There is nothing inherently wrong with this approach. Recognizing hard work and creating opportunities for advancement are essential components of a healthy organizational culture. Employees deserve to see that commitment, initiative, and strong performance can lead to meaningful career growth.

The challenge emerges when organizations assume that success in one role automatically prepares someone for the responsibilities of another.

Leadership requires a different relationship with success. Individual contributors are primarily responsible for their own performance, while managers become responsible for creating the conditions that allow others to perform effectively. The transition requires changes in communication, decision-making, accountability, and perhaps most importantly, how individuals measure their own contributions.

Research has demonstrated that this distinction carries measurable consequences. A study published in The Quarterly Journal of Economics, examining promotion decisions involving sales employees across 131 companies, found that organizations frequently emphasized individual sales performance when selecting managers, even when other characteristics were more closely associated with managerial effectiveness.

The findings highlighted a tension between rewarding employees for exceptional performance and identifying those best equipped to manage others. Promotions can motivate employees and demonstrate that achievement matters, but organizations can undermine that investment when leadership responsibilities are assigned without sufficient consideration of managerial potential.

The lesson is not that high-performing employees should be passed over for leadership positions. Rather, it is that leadership development must become an intentional process instead of an assumption attached to a promotion.

A recent Business Insider profile of a 23-year-old Walmart store manager offers an interesting perspective on what successful career advancement can look like. Beginning her career as a cashier, she progressed through multiple roles before assuming responsibility for managing a store at an unusually young age.

Her journey is noteworthy not simply because of how quickly she advanced, but because of the professional adjustments she described making along the way. In the interview, she discussed learning to delegate, changing how she communicated, establishing professional boundaries, and adopting a more service-oriented approach to leadership.

These are important observations because they reveal something that is often lost in conversations about professional achievement. Advancement is not simply about acquiring more authority. It is about developing the ability to exercise that authority in ways that strengthen the people and organization around you.

For employees who have built their reputations on personal reliability and problem-solving, this transition can be particularly challenging. When someone has spent years becoming exceptionally proficient at their responsibilities, the instinct to step in and solve problems can become almost automatic. They know the procedures, understand the expectations, recognize potential obstacles, and can often complete tasks more quickly than less experienced colleagues.

As an individual contributor, those characteristics are valuable. As a manager, however, relying too heavily on them can create an unintended problem.

The leader becomes the person everyone depends upon to make decisions, resolve difficulties, and complete important tasks. While this may initially appear to demonstrate strong management, it can prevent employees from developing the confidence and capabilities necessary to work independently.

A manager who constantly provides the answers may unintentionally limit the growth of the people seeking guidance.

The transition to effective leadership therefore requires learning when to step forward and when to create room for someone else to succeed. It means recognizing that allowing an employee to work through a challenge can sometimes create greater long-term value than immediately solving the problem yourself.

It also means accepting that other people may accomplish the same objective through different methods. Leadership is not about creating a workforce that mirrors the manager's personal approach to every responsibility. It is about recognizing individual strengths, establishing clear expectations, and helping employees contribute meaningfully toward shared goals.

Throughout my own career in retail operations and team leadership, I've come to appreciate how significant this distinction can be. Operational knowledge provides an important foundation, but leading people requires understanding that employees bring different experiences, abilities, motivations, and perspectives into the workplace.

A process that seems straightforward to an experienced manager may be unfamiliar to someone learning it for the first time. An instruction that appears clear to one employee may require additional explanation for another. A challenge that can be resolved quickly through direct intervention may also represent an opportunity to develop someone's judgment and confidence.

Recognizing these differences is part of what separates managing tasks from developing people.

Yet the responsibility for making this transition successfully should never rest entirely on the employee receiving the promotion.

Organizations have an equally important role in preparing their future leaders, and research suggests that many still have considerable room for improvement.

A 2026 Gallup report examining frontline supervision found that 65% of surveyed supervisors had obtained their positions primarily through performance or experience in frontline roles. Only 30% reported being selected because of their supervisory skills or experience.

The same research found that just 45% had participated in supervisory training during the preceding year, while 23% reported never receiving such training.

These findings raise an important question about organizational responsibility. If a company promotes an employee based on excellence in one role but provides limited preparation for an entirely different set of responsibilities, how should it evaluate the challenges that employee may subsequently encounter?

Consider someone who has spent years mastering retail operations. They may understand inventory management, merchandising standards, customer service, scheduling requirements, and the operational details necessary to keep a store functioning effectively.

Upon promotion, however, their responsibilities can expand into areas that require a different kind of expertise. They may suddenly be expected to coach underperforming employees, address interpersonal conflicts, navigate difficult conversations, develop future leaders, and maintain morale during periods of uncertainty.

These responsibilities cannot always be mastered through operational experience alone.

A promotion may recognize what an employee has accomplished, but leadership development must prepare that employee for what comes next.

This is one reason internal advancement programs deserve greater attention in discussions about organizational culture and long-term business performance.

Walmart provides an interesting example of the scale at which a large employer can invest in career mobility. According to its 2026 Jobs Spotlight Report, approximately 75% of the company's salaried U.S. store, club, and supply chain leaders began their careers in hourly positions.

The company has also reported more than four million training completions through Walmart Academy since 2016, alongside educational opportunities through its Live Better U program.

These figures do not establish that every promotion results in effective leadership or that every employee experiences the same opportunities. They do, however, illustrate the potential significance of creating pathways that allow employees to progress from entry-level responsibilities into increasingly complex professional roles.

For employees, visible opportunities for advancement can transform how they view their relationship with an organization. A job can become the beginning of a career rather than simply a position to occupy.

For employers, internal development creates opportunities to retain institutional knowledge, strengthen employee engagement, and build leadership teams with firsthand experience of the operations they oversee.

But the existence of a career pathway is only part of the equation. Organizations must also consider how employees are prepared for each transition along that pathway.

This begins with recognizing that some of the most important indicators of leadership potential are not always reflected in traditional performance evaluations.

Productivity, accuracy, sales results, attendance, and operational accomplishments provide valuable information about an employee's contribution. They help organizations understand how effectively individuals perform their assigned responsibilities.

What they may not reveal is how an employee responds when a colleague needs assistance, whether they willingly share knowledge, how they handle disagreements, or whether they can recognize potential in someone whose abilities differ from their own.

These behaviors can be important indicators of future leadership effectiveness.

An employee who consistently delivers outstanding results but struggles to collaborate may require a different developmental approach from someone who performs well while also demonstrating patience, accountability, and an ability to encourage others.

Neither employee should automatically be excluded from advancement. The distinction should help organizations identify the support and development each person needs.

Leadership potential should be cultivated through deliberate opportunities to learn. Mentoring assignments, cross-functional projects, temporary supervisory responsibilities, and structured coaching can help employees explore leadership before assuming permanent management positions.

These opportunities can also help organizations make more informed promotion decisions while giving employees a clearer understanding of whether management aligns with their interests and strengths.

Not every outstanding employee wants to become a manager, and that should not be interpreted as a lack of ambition.

Some professionals derive tremendous satisfaction from developing specialized expertise, solving complex technical problems, or becoming highly skilled individual contributors. Organizations benefit from those capabilities, and employees should have meaningful opportunities for recognition and advancement without necessarily assuming responsibility for supervising others.

A healthy organization recognizes that professional growth does not have to follow a single path.

For those who do pursue leadership, another quality becomes increasingly important: the willingness to recognize that advancement does not mean learning has ended.

In many ways, a promotion can expose how much an individual still needs to understand.

A new manager may possess extensive operational knowledge while having limited experience in conflict resolution, coaching, or organizational decision-making. Acknowledging those developmental needs is not evidence of weakness. It reflects the professional maturity required to grow into a more complex role.

Some of the most effective leaders are those who remain willing to ask questions, seek guidance, acknowledge mistakes, and learn from the employees they supervise.

Leadership authority and humility are not opposing qualities. They can reinforce one another.

When employees see that their manager values learning, welcomes constructive input, and accepts accountability, it can help establish an environment where people feel more comfortable contributing ideas and raising concerns.

That environment becomes particularly important as organizations navigate technological and operational change.

Artificial intelligence is already changing how businesses approach forecasting, scheduling, reporting, information retrieval, and operational analysis. As these capabilities expand, managers may have access to more information and increasingly sophisticated tools to support decision-making.

But better technology does not eliminate the need for effective leadership.

Managers must still communicate expectations, establish priorities, resolve disagreements, recognize employee contributions, and help people adapt when established processes change.

In fact, as technology assumes a greater role in routine administrative and analytical work, the human responsibilities of leadership may become even more significant.

The opportunity is not simply to use AI to make managers more efficient. It is to create conditions in which leaders can devote more attention to coaching, developing talent, and strengthening their teams.

Whether organizations realize that opportunity will depend in part on how they define managerial success.

If leadership continues to be evaluated primarily through an individual's ability to personally resolve problems and complete operational tasks, organizations may overlook the broader value created by managers who develop capable, confident, and increasingly independent teams.

A manager's greatest accomplishment may not always be visible in their own performance statistics. It may be reflected in the employee who develops the confidence to accept a new responsibility, the colleague who grows into a leadership position, or the team that continues performing effectively when the manager is not present.

These outcomes are more difficult to capture in a conventional productivity report, but they can have lasting implications for organizational performance.

The story of an employee progressing from cashier to store manager deserves recognition because it represents ambition, opportunity, and the possibility of meaningful professional advancement.

Yet the most valuable leadership lesson may lie beyond the promotion itself.

It is found in the changes that occur as someone learns to move from personal achievement toward responsibility for the growth and success of others.

Learning to delegate rather than control. Learning to coach rather than simply direct. Learning to communicate with greater intention. Learning to recognize that another person's success does not diminish your own accomplishments but can become one of your most meaningful contributions.

Organizations that understand this distinction can approach leadership development with greater purpose. They can continue rewarding exceptional performance while recognizing that preparation, mentorship, and ongoing support are essential components of advancement.

Employees, in turn, can approach leadership as an opportunity to develop new capabilities rather than simply exercise greater authority.

Perhaps the most important question organizations should ask before promoting someone is not merely whether that employee has earned the opportunity. It is whether the organization is prepared to help that individual succeed in the responsibilities ahead.

And perhaps the most important realization for every emerging leader is that the skills responsible for their personal success are only the beginning of what leadership requires.

The greatest contribution a leader makes is not proving they can do the work better than everyone else. It is creating an environment where everyone else can do their best work.

That is the difference between rewarding performance and developing leadership.

And it is a distinction organizations cannot afford to overlook.

Mike Kehoe writes about leadership, organizational culture, emerging technology, and the human side of transformation through Leading Through the Algorithm™.

Sources and further reading

  • Business Insider (October 2026): Walmart cashier-to-store-manager career journey

  • Gallup (2026): When Good Frontline Workers Make Bad Supervisors

  • Benson, Li, and Shue (2019): Promotions and the Peter Principle, The Quarterly Journal of Economics

  • Walmart Corporate (2026): Jobs Spotlight Report

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