A theoretical and empirical analysis of within-job and promotion-based
incentives for middle managers is presented, using personnal data fro
m a firm. Within-job incentives are stronger than implied by previous
studies. Evidence is provided that promotions sort employees by abilit
y, and also generate incentives. Promotions are associated with large
increases in lifetime earnings, as long as performance is sustained in
the future. There is little evidence that the firm trades off within-
job and promotion-based incentives as predicted. Instead, it appears t
o use a simple incentive scheme, resulting in declining incentives for
those passed over for promotion.