This book, first published in 1992, seeks an explanation of the pattern of sharp discrepancy of wage levels across the world-economy for work of comparable productivity. It explores how far such differences can be explained by the different structures of households as 'income-pooling units', examining three key variables: location in the core or periphery of the world-economy; periods of expansion versus periods of contraction in the world-economy; and secular transformation over time. The authors argue that both the boundaries of households and their sources of income are molded by the changing patterns of the world-economy, but are also modes of defense against its pressures. Drawing empirical data from eight local regions in three different zones - the United States, Mexico and southern Africa - this book presents a systematic and original approach to the intimate link between the micro-structures of households and the structures of the capitalist world-economy at a global level.