Three years after the Great Resignation peaked, its most consequential legacy is not the workers who left but the leadership vacuum they left behind. A wave of mid-career and senior departures between 2021 and 2023 hollowed out management ranks across industries, and companies are now confronting the reality that rebuilding leadership pipelines requires far more than posting job listings.
Data from the Society for Human Resource Management indicates that 61% of organizations reported critical gaps in their leadership pipelines entering 2026, up from 48% in 2023. The departures disproportionately affected director and vice president-level roles, where institutional knowledge and relationship capital are most difficult to replace.
“The Great Resignation was not just a frontline phenomenon. It reached deep into management layers, and many companies are only now recognizing the extent of the damage,” said Dr. Priya Sharma, professor of organizational behavior at the Wharton School. “You cannot simply promote people faster and call it succession planning. The gap requires systematic, long-term investment.”
Companies are responding with significantly increased spending on leadership development. Corporate investment in formal leadership programs reached $24.8 billion in 2025, a 34% increase from 2022 levels, according to Training Industry research estimates. Programs are shifting away from one-time executive education events toward sustained, multi-year developmental tracks that combine mentorship, cross-functional rotation, and coached project leadership.
The internal-versus-external hiring debate has tilted decisively. Organizations that prioritized internal promotion during the recovery period report 28% higher retention among high-potential employees compared to those that relied primarily on external hires. Internal promotions also reach full productivity an average of 3.2 months faster than external appointments at the same level.
“External hires at the leadership level fail at nearly twice the rate of internal promotions within the first 18 months,” noted Marcus Jennings, chief people officer at Honeywell International. “The data is unambiguous. If you have not invested in building your bench, you are going to keep paying a premium for talent that has a coin-flip chance of succeeding.”
Succession planning itself has undergone a transformation. Traditional approaches that identified a single successor for each key role have given way to portfolio models that develop pools of candidates with overlapping capabilities. Roughly 44% of Fortune 500 companies now maintain formal succession pools rather than individual successor designations, according to a 2026 Korn Ferry survey.
Generational dynamics are adding complexity. Millennial and Gen Z leaders, who now constitute the primary pipeline for senior roles, express different expectations than their predecessors. Research from Deloitte’s Global Human Capital Trends report found that 72% of emerging leaders prioritize purpose alignment and organizational impact over title progression, while 68% expect leadership roles to include explicit flexibility provisions.
“The next generation of leaders is not rejecting leadership. They are rejecting a specific model of leadership that they watched burn out their predecessors,” said Angela Torres, managing director of leadership advisory at Spencer Stuart. “Companies that adapt their leadership proposition to reflect these expectations are filling their pipelines. Those that insist on the old model are watching candidates self-select out.”
Remote and hybrid work environments have introduced additional challenges. Managing distributed teams requires a fundamentally different skill set than leading co-located groups, and many leadership development programs have been slow to adapt. Companies that have explicitly incorporated remote leadership competencies into their development curricula report 19% higher team engagement scores among hybrid workforces.
Retention strategies for high-potential employees are becoming more sophisticated. Beyond compensation, leading organizations are deploying stay interviews, personalized development plans, and strategic project assignments designed to signal investment in individual growth trajectories. Cisco Systems reported that its targeted retention program for identified high-potential leaders reduced voluntary turnover in that cohort from 14% to 6% over two years.
Measurable outcomes are increasingly expected. Boards and executive committees are demanding quantifiable metrics from pipeline programs, including time-to-readiness for critical roles, diversity of successor pools, internal fill rates for leadership vacancies, and the performance trajectory of program graduates versus external hires.
“The era of leadership development as a feel-good expense is over,” said Sharma. “Companies that can demonstrate a clear line between pipeline investment and business performance — reduced vacancy costs, faster role transitions, better retention — are the ones securing sustained budget commitments. Everyone else is cutting programs at exactly the moment they can least afford to.”
