We analyze twenty years of personnel data from one firm. The hierarchical structure is quite simple and stable. Career movements suggest that the employee's rate of learning and the firm's learning about ability are important. There are promotion 'fast tracks.' Exit rates vary little with tenure...

Salary data from a single firm are analyzed in an effort to identify the firm's wage policy. The authors find that employees are partly shielded against changes in external market conditions; that wage variation within a job level is large both cross-sectionally and for individuals over time,...