Personnel economics drills deeply into the firm to study human resource management practices like compensation, hiring practices, training, and teamwork. Many questions are asked. Why should pay vary across workers within firms--and how quot;compressedquot; should pay be within firms? Should...

Most turnover reflects churn, where hires replace departures. Churn varies substantially by employer, industry and worker characteristics. For example, leisure and hospitality turnover is more than double that of manufacturing. In the LEHD (QWI) data, permanent employer differences account for...