What is Key Person Risk? Understanding the Impact on Your Business

A company can recover from a broken piece of equipment, a technology outage, or even a temporary market disruption. Replacing the leadership, expertise, and relationships held by a key employee is often far more difficult.

Whether it's a CEO, founder, top producer, technical expert, or trusted client advisor, the unexpected loss of a critical employee can disrupt operations, slow growth, and create uncertainty across an organization. This challenge is known as key person risk.

For more than 20 years, PartnerMD has worked with organizations of all sizes to support executive health, leadership continuity, and business performance.

Through executive physicals and executive health programs, we've seen how the health, performance, and retention of key leaders can influence organizational risk. In our experience, protecting an organization's most important people is often inseparable from protecting the business itself.

The challenge is more common than many organizations realize. According to the National Association of Insurance Commissioners, 71% of small businesses report being dependent on one or two key individuals for organizational success. For many companies, key person risk is not a distant possibility. It is an existing business reality. 

Key Takeaways

• Key person risk occurs when the loss or absence of a critical employee disrupts business operations, leadership continuity, or strategic initiatives.

• Key persons are not limited to executives and founders. They may also include top performers, technical experts, and employees with specialized knowledge or critical client relationships.

• The costs of key person risk often extend beyond recruitment expenses and can include lost productivity, institutional knowledge, client relationships, and business continuity challenges.

• Identifying key person risk is the first step toward protecting organizational performance and preparing for future leadership transitions.

What is Key Person Risk?

Key person risk refers to the potential impact on a business when a critical employee becomes unavailable due to illness, injury, retirement, death, or voluntary departure.

While the term is often associated with CEOs and founders, key persons exist throughout an organization. They are the people whose expertise, leadership, relationships, or institutional knowledge would be difficult to replace.

If your company would struggle to maintain normal operations without a particular employee, that individual likely represents a key person risk.

Who is Considered a Key Person?

Every organization is different, but key persons often include senior leaders such as CEOs, CFOs, COOs, founders, managing partners, and other executives responsible for strategic decision-making. These individuals help shape company direction and oversee critical business functions.

Top-performing sales professionals and business development leaders may also fall into this category because of the revenue they generate and the relationships they cultivate over time.

Key person risk is not limited to the executive suite. In today's economy, some of the most significant key person risks involve employees with specialized knowledge or technical expertise.

This may include cybersecurity leaders, software architects, regulatory and compliance experts, and other professionals whose expertise is difficult to replace.

Emerging leaders can also represent key person risk. While they may not yet hold senior titles, they often play an important role in future growth, succession planning, and organizational stability. Identifying these employees early can help organizations better prepare for the future.

Why Organizations Face Key Person Risk 

Many organizations think about key person risk in terms of succession planning. However, the issue extends beyond leadership transitions.

Business leaders increasingly recognize the potential impact. In Mercer Marsh Benefits' Five Pillars of People Risk Report, 67% of respondents said it was likely that key person risk would affect their business within the next three years, while 55% said the loss of a key person would have a high impact on their organization.

Health Risks

Health-related events remain a significant concern for employers. According to the Centers for Disease Control and Prevention (CDC), nearly 78.4% of adults ages 35-64 have at least one chronic health condition, and more than half have multiple chronic conditions. At the same time, more than 850,000 Americans died from heart disease or stroke in 2024.

While many health conditions can be successfully managed, these statistics highlight an important reality: health-related disruptions can affect employees at every level of an organization.

For organizations that rely heavily on a small group of leaders or specialists, these health-related risks are more than personal concerns. They can become business continuity concerns as well.

Retention Risks

A critical employee doesn't have to experience a health event to create disruption. They may retire, join a competitor, launch their own business, or pursue a new opportunity.

Compensation, career growth, workplace flexibility, and benefits can all influence employee retention. According to WTW's 2024 Global Benefits Attitudes Survey, 36% of employees cited health benefits as a top reason for staying with their employer. 

Organizations that depend heavily on a small number of leaders, specialists, or top performers may be particularly vulnerable when those employees leave unexpectedly. As competition for talent continues across many industries, retention remains an important part of managing key person risk.

The Business Impact of Key Person Risk

The impact of key person risk extends far beyond the challenge of filling an open position. According to SHRM, replacing an employee can cost up to 200% of their annual salary, depending on the role and level of seniority.

However, the financial cost is often only part of the story.

Organizations can lose years of institutional knowledge, trusted client relationships, and operational expertise. In many organizations, critical knowledge exists not in formal documentation but in the experience, judgment, and relationships developed over years of work. 

For publicly traded companies, leadership transitions can create additional uncertainty. A study by researchers at the Federal Reserve Bank of New York found that CEO turnover was associated with increased stock-price volatility as investors reacted to uncertainty surrounding the organization's future direction and leadership stability.

Because many of these costs are indirect, organizations often underestimate the true impact of key person risk until they are forced to respond to it.

Understanding the potential impact of key person risk is one thing. Determining whether your organization is vulnerable to it is another.

If you answered "yes" to one or more of these questions, your organization may have meaningful exposure to key person risk and could benefit from evaluating where vulnerabilities exist.

How to Address Key Person Risk

The good news is that identifying risk is the first step toward managing it. Many organizations address key person risk through succession planning, knowledge transfer, insurance strategies, and programs designed to support the health, well-being, performance, and retention of their most important employees.

Understanding where your vulnerabilities exist today can help ensure your organization is better prepared for whatever comes next.

Because health, performance, and retention all play a role in leadership continuity, many organizations include executive health as part of their broader approach to managing key person risk.

Executive health programs help address several common sources of key person risk. By identifying health concerns early, supporting long-term wellbeing and performance, and offering a highly valued benefit for key employees, these programs can help organizations reduce disruption, strengthen retention, and support leadership continuity over time.

Concerned About Key Person Risk?

PartnerMD works with employers to support leadership continuity through executive physicals, executive health programs, and proactive healthcare strategies designed for today's business leaders.

If you'd like to discuss your organization's goals and explore whether an executive health program could play a role in your broader risk management strategy, schedule a conversation with our Executive Health team.