We exploit rules of class formation to identify the causal effect of increasing the number of immigrants in a classroom on natives test scores, keeping class size constant (Pure Composition Effect). We explain why this is a relevant policy parameter although it has been neglected so far. We show...

The paper examines the determinants of the division of labour within firms. It provides an explanation of the pervasive change in work organization away from the traditional functional departments and towards multi-tasking and job rotation. Whereas the existing literature on the division of...

This paper explores the implications of the ongoing reorganization of firms for inequality in the labour market. We show how recent technological advances in physical and human capital can lead to the breakdown of occupational barriers, creating demands for new combinations of skills, and...

Several recent studies based on 'exogenous' sources of variation in education outcomes show Instrumental Variables (IV) estimates of returns to schooling that are substantially higher than the corresponding Ordinary Least Squares (OLS) estimates. Card (1995a) suggests that these results can be...

An important component of the long-run cost of a war is the loss of human capital, suffered by children of schooling age who receive less education because of the war. This paper shows that in the European countries involved in World War II, children who were ten years old during the conflict...

This paper documents the existence of striking regional differences in the reported behaviour of employees working within the same firm, but in different Italian regions. In particular, the frequency of recorded and punished misconduct episodes is significantly higher among employees working in...

The paper analyses the contemporary organizational restructuring of production and work and derives some salient implications for the labour market. The analysis focuses on the switch from occupational specialization at 'Tayloristic' organizations to multi-tasking at 'holistic' organizations....

The paper examines the implications of an important aspect of the ongoing reorganization of work – the move from occupational specialization towards multi-tasking – for centralized wage bargaining. The analysis shows how, on account of this reorganization, centralized bargaining becomes...

We present a model in which two of the most important features of the long-run growth process are reconciled: the massive changes in the structure of production and employment; and the Kaldor facts of economic growth. We assume that households expand their consumption along a hierarchy of needs...