Unobserved heterogeneity and risk in wage variance: Does more schooling reduce earnings risk?

We apply a recently proposed method to disentangle unobserved heterogeneity from risk in returns to education to data for the USA, the UK and Germany. We find that in residual wage variation, uncertainty by far dominates unobserved heterogeneity. The relation between uncertainty and level of education is not monotonic and differs among countries.