earnings variability are due to uncertainty and which components are due to components of human diversity that are forecastable …

it is due to greater uncertainty faced by agents. Applying the methodology of Cunha, Heckman, and Navarro (2005) to data … predictable and unpredictable components of earnings have increased in recent years. The increase in uncertainty is substantially … greater for unskilled workers. For less skilled workers, roughly 60% of the increase in wage variability is due to uncertainty …