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目次

Introduction: The U.S. debate on dual labour market; the European debateover labour market flexibility; are rigidities that bad? the debate on labourmarket flows and 'renovating economies'; unemployment and skills; requiredtechnical background. Some technical background: an introduction to dynamicprogramming; the matching function. The dynamic efficiency wage model:presentation of the model; the cost of labour; the dynamics of labour demand;aspects of commitment; introducing dualism. The dual model: internal dualismand demand volatility; introducing internal dualism in the dynamic efficiencywage model; persistent shocks. Efficiency wages and segmented labour markets- the empirical debate: competitive versus noncompetitive models of thelabour market; the debate on interindustry wage differentials; directevidence; evidence on dualism. Dualism, labour market reform, andmacroeconomic performance: the model; the rigid world (regime A); flexiblecontracts available (regime B); the transition between the two regimes;introducing business cycles; empirical evidence on the effect of two-tiersystems on labour demand. Appendix: derivation of theoretical results. Impactof dualism on wage formation: flexible contracts and wage formation; a modelof wage formation; flexible contracts and competitive wage setting; theunderemployment case with full job protection; the underemployment case withincomplete job protection; the full-employment case; impact of flexiblecontracts on the markup; empirical evidence on the effect of two-tier labourmarkets on wage formation. Dualism and labour market flows: facts aboutflows; job creation and job destruction in the dual model; from job flows toworker flows; dynamic simulations; do dual labour markets lead to a dualsociety? Skilled versus unskilled workers: the basic model; impact of theproductivity differential and the skill composition of the population; theflexible regime and the role of irreversibility. Human capital accumulation:the simple learning-by-doing model; labour market rigidities and the returnto education; perspectives on labour market institutions and economic growth;political and distributional issues. The political economy of two-tiersystems: a simple model of the labour market; the two-tier systems as apolitical implementation device; the consensus role of two-tier systems;two-tier contracts as a support-building device and the associatedtime-consistency problem; the political analysis on the political aspects oflabour market.