Economists disagree about the factors driving the substantial increase in residual wage inequality in the U.S. over the past few decades. We identify and estimate a general model of log wage residuals that incorporates: (i) changing returns to unobserved skills, (ii) a changing distribution of...

This paper develops and estimates a two-factor model of intergenerational skill transmission when earnings inequality reflects differences in individual skills and other non-skill shocks. We consider heterogeneity in both initial skills and skill growth rates, allowing variation in skill growth...

The last decades have shown that the traditional steady job with a permanent contract is on the decline. While permanent contracts and the insider position that they bring are highly valued by workers, research on the returns to human capital have predominantly focused on wages as subject of...

For emerging professions, such as jobs in the fi eld of artifi cial intelligence (AI) or sustainability (green), labour supply does not meet industry demand. In this scenario of labour shortages, our work aims to understand whether employers have started focusing on individual skills rather than...

For emerging professions, such as jobs in the field of Artificial Intelligence (AI) or sustainability (green), labour supply does not meet industry demand. In this scenario of labour shortages, our work aims to understand whether employers have started focusing on individual skills rather than...

I propose a model in which credentials, such as diplomas, are intrinsically valuable; a situation described as credentialism. The model overcomes an important criticism of signalling models by mechanically tying a worker’s wages to their productivity. A worker’s productivity is influenced by...

Measuring unobserved individual ability is a core challenge of the analysis of questions related to human capital development. For that purpose, concepts from psychology, predominantly measures of IQ have become established means in empirical economics. However, many issues of individual di...

Labor market pooling is considered one of the advantages of agglomerations. This paper presents a model of human capital formation in an imperfectly competitive, pooled local labor market with heterogeneous workers and firms. Firms produce with different technologies requiring diverse skills....

Changes in the characteristics and skills of British youths between the mid-1980s and mid-2000s are evaluated using a method recently developed by Altonji et al. The main finding is that skills have increased over time in successive cohorts of young people. The improvement is, however, uneven,...

Self-productivity is a crucial feature in the process of skill formation. It means that skills and health acquired at one stage in the life cycle enhance skills and health formation at later stages. This paper presents an empirical investigation of self-productivity in early childhood in...