This document discusses predicting sales team turnover. It notes that annual turnover is 27% with an average tenure of less than 2 years, costing the company billions in training and incentives. Benefits of predicting turnover include intervening to increase appreciation and motivation, making counteroffers, and substantial cost savings. The document proposes a quantitative model to identify high turnover risk individuals and why, using performance metrics, peer effects, and meeting targets. The model found middling performers most likely to turnover. Peer performance variation and turnover influence each other. Implications are identifying predictors from big data and considering peer effects.