This paper reports about a randomized experiment in which training vouchers of €1000 were given to low-skilled workers. The vouchers increase training participation by almost 20 percentage points in two years, relative to a base rate of 0.45. This increased participation comes at a substantial...

This paper examines the earnings premium to computer use in a developing country: Ecuador. We use different approaches to examine whether the premium is causal. Controlling for an extensive set of observables, we find an earnings difference between users and non-users of around 20%. Using first...

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...