a large market, and is limited by the savings of working-class families. Thus, there is always a collective-action problem to some degree for employers with regard to skills training. Thelen's study takes this as the starting-point of her historical analysis, and traces how collective actors have sought to shape skills training in these four economies. The different balances of skill supply and demand, and the different degrees of organization of the actors and of the state, are the key variables in shaping this history.Against the background of this common problem, Thelen traces different sticking points in the regulation of skills in these four economies in the late nineteenth and early twentieth centuries. These gave rise to distinctive responses by employers in each of the four countries, and have helped to shape current institutional arrangements. Thus in Germany, large-scale employers, who wanted to throw off the constraints of the old artisan-skilled apprenticeship system, were concerned centrally by issues of certification, and their right to set their own standards for skills training. In Britain, faced with the pressure from craft patterns of job regulation, employers were concerned centrally with issues of control of labour use. In the USA, large firms in particular wanted to take advantage of the plentiful and cheap supplies of unskilled labour, break away from craft restrictions and sought to harness work rationalization and build internal labour markets. In Japan, large employers wanted to break away from the instability of employment associated with the old oyakata system of master craftsmen, and sought an alliance with other workers to lay the foundations of the now familiar Japanese company system. Each of these four types of sticking points were caused by prevailing patterns of institutional regulation and the power relations embodied within them, and they stimulated the search for new solutions to the problems of skill supply.What makes the interplay of institutional actors so interesting in this study is the number of common features to be observed across the four economies. In early industrialization, all four made extensive use of subcontracting in which master craftsmen contracted with firms, and then hired their own helpers and apprentices. It is also striking how various models of apprenticeship were to be found in all four economies. Likewise, the passage towards the greater use of internal labour markets, strong especially in the USA and Japan, although less so in Britain and Germany.Apart from charting the interplay of different actors in the evolution of workplace training institutions in the four countries, Thelen has a theoretical target. Her analysis of the comparative politics of training in the four economies seeks to show how much the equilibrium models of varieties of capitalism leave out of the picture. She is very critical of the functionalism of some modern interpretations of how institutions emerge and the role they play in modern economies. At first reading, it is hard to ...