We derive a tractable nonlinear earnings function which we estimate separately for each individual in the NLSY79 data. These estimates yield five important parameters for each individual: three ability measures (two representing the ability to learn and one the ability to earn), a rate of skill...

This paper measures risk in the present value of workers’ remaining lifetime earnings. Building upon a common earnings specification, our estimate combines flexible, heterogeneous forecasts of individuals’ expected earnings growth rates and the variances of potential permanent and temporary...