Unemployment of low-skilled workers.

Summary Unemployment appears to be a scourge that stigmatizes certain segments of the working population, with the risk of unemployment varying from one to two, or even more, between the most productive individuals who, due to lack of training or experience, are less productive. This thesis examines the causes of this particular feature and the remedies that can be applied, along three main lines: what relationships can be identified between aggregate unemployment rates, the structure of the labor force that must be held "responsible" for the poor performance of certain countries in terms of unemployment? The particular acuteness of the unemployment problem that is manifested with respect to the least qualified workers testifies to a certain specificity of the problem of underemployment that affects this category of labor force. What might be the main causes of this problem? Among the causes that can be thought of, what is the share of responsibility attributable to each of them? Finally, can we evaluate the policies implemented so far in some OECD countries, notably in France, to curb unemployment? And, more generally, what measures can be recommended in this direction?