Succession Planning: A Practical Guide for HR Directors and People Leaders

Succession planning is the process of identifying and developing the internal talent needed to fill key leadership and specialist roles over time. Done well, it builds organisational resilience, signals investment in people, and ensures that strategy is not derailed by the predictable reality that leaders move on. Done poorly, or not at all, it leaves organisations dependent on reactive external hiring when positions become vacant and vulnerable to the loss of knowledge and relationships that follows leadership change.

Why Most Succession Planning Falls Short

The most common problem with succession planning is that organisations mistake activity for outcome. Completing a succession planning spreadsheet is not the same as having a viable succession pipeline. Nominating a successor on paper is not the same as having someone ready to step into a role.

Research by the Corporate Executive Council found that fewer than one in five organisations felt confident that their succession pipeline was strong enough to meet future leadership needs. The gap between intention and readiness tends to be largest in the middle management population, where the pipeline for senior roles should be building.

The second common failure is that succession plans are created and then rarely revisited. The organisational context changes, individual development progresses, people leave, and the plan becomes a historical document rather than a live strategic tool.

Identifying Critical Roles

Effective succession planning begins with clarity about which roles are truly critical. Not every role requires a formal succession plan, but organisations often lack rigour in distinguishing between roles that would cause strategic disruption if vacant and roles that are simply difficult to fill quickly.

The criteria for criticality typically include: direct impact on strategic capability or customer relationship, difficulty of external replacement, depth of organisational knowledge required, and regulatory or risk significance.

For each critical role, the organisation needs to understand both the current state of succession readiness and the development investments required to improve it.

Identifying and Developing Successors

Succession candidates are identified through a combination of performance data, capability assessment, and leadership potential indicators. Performance alone is an insufficient predictor of readiness for more senior roles; the skills and behaviours that produce results at one level often differ significantly from those needed at the next.

Psychometric assessments, structured capability frameworks, 360-degree feedback, and development centres all contribute useful information. The most robust succession decisions draw on multiple data sources rather than relying on a single manager's view.

Development for succession should be targeted and deliberate. Stretch assignments that expose successors to the specific challenges of the target role, mentoring from the current role holder, and executive coaching to build self-awareness and senior leadership capability are consistently among the most effective interventions.

Making Succession Planning a Living Process

The succession plan needs to be reviewed at least annually, with updates triggered by significant organisational change, key departures, and changes in strategic direction. Ownership should sit with the leadership team, not delegated entirely to HR; succession is a strategic decision, not an administrative one.

Boards and executive teams in mature organisations treat succession for the most senior roles as a permanent agenda item rather than a periodic exercise. For the broader management population, the People Director or CHRO typically facilitates a structured annual talent review that assesses succession depth across the organisation.

Transparency with succession candidates about their status, the development investment being made, and the realistic timeline involved is a factor that many organisations handle poorly. High-potential individuals who are not told they are in a succession pipeline, or who receive contradictory signals about their future, are more likely to leave.

Our [leadership development programmes](/leadership-training) are frequently used as the structured development component of succession plans for identified high-potentials and senior leader successors.

References

Corporate Executive Council (2005) Realising the Full Potential of Rising Talent: A Quantitative Analysis of the Impact of High-Potential Programmes on Performance. Washington DC: Corporate Executive Board.

Charan, R., Drotter, S. and Noel, J. (2001) The Leadership Pipeline: How to Build the Leadership Powered Company. San Francisco: Jossey-Bass.

Rothwell, W.J. (2010) Effective Succession Planning: Ensuring Leadership Continuity and Building Talent from Within. 4th edn. New York: AMACOM.