The structure of income mobility: empirical evidence from five UE countries

In this paper we use the European Community Household Panel (ECHP) to assess differences in the level and structure of income mobility in a selected sample of European countries. We adopt recent theoretical proposals for the decomposition of axiomatic and welfare measurements of mobility in exchange, structural and growth components. Decomposition exercises which take into account some type of division of the population and income sources are also performed. We find that cross-country income mobility comparisons largely depend on the type of indices used. The relative positions of the countries considered change when the analysis is based on ethical instead of objective measures of income mobility. Results also show that in most countries income growth has a very limited effect upon aggregate mobility, being the most important determinant the rerankings of individuals, with a little weight for inequality changes. Although some common results exist concerning the delimitation of groups experiencing the greatest income fluctuations, such as individuals belonging to single-parent households or young household heads, the intensity of these results varies greatly across countries.