How worker productivity evolves with tenure and experience is central to economics, shaping, for example, life …-cycle earnings and the losses from involuntary job separation. Yet, worker-level productivity is hard to identify from observational …-the-job tenure from total experience in determining productivity growth. Several findings emerge concerning the initial period on the …

seniority evolves over the worker's tenure with the firm and how it affects wages, effort, monitoring intensity and separation … rates. We also show how earnings loss from unemployment reflects seniority and how optimal monitoring intensity, amenities … seniority. We provide a precise measure of seniority as a ratio of co-state variables and illustrate how this measure of …

We study how human capital diversification, in the form of double majoring, affects the response of earnings to labor … market shocks. Double majors experience substantial protection against earnings shocks, of 56%. This finding holds across …

: 0.76 fewer employers (↓ 19%) and $674 fewer earnings (↓ 21%) per year. We develop a novel econometric framework that …