A range of alternative empirical definitions of informal activity have been employed in the literature. Choice of definition is often dictated by data availability. Different definitions may imply very different conceptual understandings of informality. This paper investigates the degree of...

This paper examines rates of return to schooling in Kazakhstan using OLS and instrumental variable (IV) methodologies. We use spouse’s education and smoking as instruments. We find that spouse’s education is a valid instrument and that conventional OLS estimates that assume the exogenous...