This paper aims to inform policies facilitating job-to-job transitions triggered by changes in the task content of occupations and in job demand. It assesses the distances existing between occupations in terms of cognitive skills and of skills as they emerge from the tasks performed on the job,...

I study the human capital development and firm-worker matching processes for PhD economists.This group is useful for this purpose because the types of jobs they hold can be easily categorized and they have an observable roductivity measure (that is,publications.)I derive a two-period model to...