Promotions and Wage Growth
发现内部流动（晋升或职位变动）是工资增长的重要来源，约占白人和黑人男性一生工资增长的15%，但对女性影响较小。高薪工人更可能获得晋升，且多数流动发生在职业生涯早期。
This article presents evidence that internal mobility, defined as a promotion or other position change, is an important source of wage growth. It accounts for approximately 15 percent of wage growth over the life cycle for white and black men but less for women. The incidence of promotions and other position changes appears tied to the wage level: better paid workers are more likely to be promoted. The life-cycle incidence of internal mobility looks similar to that for conventionally defined job mobility. Most moves are made early in the career; mobility declines both with time in position and with experience. Copyright 1996 by University of Chicago Press.