algo-hr-turnover

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Build employee turnover prediction models to identify flight risk and retention drivers. Use this skill when the user needs to predict which employees are likely to leave, identify retention risk factors, or prioritize HR interventions — even if they say 'attrition prediction', 'who is going to quit', or 'employee retention model'.

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Sourceasgard-ai-platform/skills

Added on2026-04-15

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SKILL.md Content

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Employee Turnover Prediction

Overview

Turnover prediction uses classification models (logistic regression, random forest, XGBoost) to estimate the probability an employee will leave within a defined period (typically 6-12 months). Features include tenure, compensation, performance, promotion history, and engagement signals.

When to Use

Trigger conditions:

Identifying employees at high risk of voluntary departure
Quantifying which factors drive turnover for targeted interventions
Prioritizing retention budgets toward highest-impact employees

When NOT to use:

For involuntary termination planning (different process and ethics)
When headcount is < 200 (insufficient data for reliable modeling)

Algorithm

IRON LAW: Turnover Models Predict RISK, Not Certainty
A predicted 80% turnover probability means "employees with similar
profiles historically left 80% of the time." It does NOT mean this
specific employee WILL leave. Never use model outputs as sole basis
for employment decisions — that creates legal and ethical liability.

Phase 1: Input Validation

Collect: employee demographics, tenure, compensation (relative to market), last promotion date, performance ratings, manager change history, engagement survey scores, commute distance. Outcome: voluntary departure within N months. Gate: Minimum 200 turnover events, features available before departure date.

Phase 2: Core Algorithm

Feature engineering: tenure buckets, comp ratio (salary/market median), time since last promotion, manager tenure, engagement trend
Handle class imbalance: turnover rate typically 10-20%. Use SMOTE or class weights.
Train: logistic regression (interpretable, HR-preferred) or GBDT (higher accuracy)
Output: probability of departure + top risk factors per employee

Phase 3: Verification

Evaluate: AUC, precision-recall (at actionable thresholds). Backtest: did the model correctly flag employees who left in the past 6 months? Gate: AUC > 0.70, precision > 50% at top decile.

Phase 4: Output

Return risk scores with driver analysis.

Output Format

json

{
  "risk_scores": [{"employee_id": "E123", "turnover_prob": 0.72, "risk_tier": "high", "top_drivers": ["low_comp_ratio", "no_promotion_3yr"]}],
  "metadata": {"model": "xgboost", "auc": 0.78, "prediction_window_months": 12}
}

Examples

Sample I/O

Input: Employee: 4yr tenure, comp ratio 0.85, no promotion in 3yr, engagement score declining Expected: High risk (>0.6). Top drivers: below-market compensation, stalled career progression.

Edge Cases

Input	Expected	Why
New hire (< 6 months)	Unreliable prediction	Insufficient behavioral data
Top performer, high comp	Still could leave	Non-financial factors (manager, culture) matter
Post-reorg period	Model drift likely	Unusual conditions distort patterns

Gotchas

Survivorship bias: Training data only includes people who were hired and stayed long enough to observe. Early-stage leavers may be underrepresented.
Feature leakage: "Started job searching" or "updated LinkedIn" are strong predictors but ethically and legally problematic to use. Stick to internal HR data.
Self-fulfilling prophecy: If managers treat "high risk" employees differently (less investment, fewer projects), the model prediction becomes self-fulfilling.
Legal constraints: Using protected attributes (age, gender, ethnicity) directly or via proxies may violate employment law. Audit for disparate impact.
Retention intervention timing: Identifying risk is only useful if HR acts. Build the model into a retention workflow with specific intervention triggers.

References

For feature engineering from HR data, see
```
references/hr-features.md
```
For ethical AI in HR applications, see
```
references/ethical-hr-ai.md
```