Principia

Succession Coverage Ratio

operationalpure operational · mobility · percentage · organization

The proportion of key positions with at least one identified ready successor.

How it’s computed

Formula
(Key positions with named successors / Total key positions) × 100
Measurement model
operational (a formula over systems data) — not a reflective survey scale; “reliability” here means data quality, not internal consistency
record grain →← summary (lossy)HRIS key_positionsas-of end⊃filterkey positions witha named successorΣnkey positionsΣnSuccessionCoverage Ratio÷
Fig. How Succession Coverage Ratio is built — data sources → actions → metric, read left to right. The grain boundary marks where record detail becomes a summary.

What it operationalizes

This is a pure operational metric — it has no single latent construct behind it; it stands as its own node, connected to programs and outcomes rather than to a psychometric scale.

Use it

Track Succession Coverage Ratio and its drivers in the People Analytics Toolbox — the registry’s evidence wired into deployable measurement.

Related metrics

Internal Hire Rate

The percentage of open roles filled by existing employees moving internally.

Lateral Move Rate

The percentage of employees who changed roles at the same organizational level.

Time to Promotion

The average time employees take to be promoted from their last hire or promotion date.

Programmatic access: /api/v1/metrics/metric.succession_coverage_ratio · /api/v1/evidence-statements?construct=.