Marika Karanassou , Queen Mary, University of London and IZA Hector Sala , Universitat Autònoma de Barcelona and IZA Dennis J. Snower , Institute for World Economics, University of Kiel, CEPR and IZA
February 1, 2007
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We distinguish and assess three fundamental views of the labour market regarding the movements in unemployment: (i) the frictionless equilibrium view; (ii) the chain reaction theory, or prolonged adjustment view; and (iii) the hysteresis view. While the frictionless view implies a clear compartmentalisation between the short- and long-run, the hysteresis view implies that all the shortrun fluctuations automatically turn into long-run changes in the unemployment rate. We assert the problems faced by these conceptions in explaining the diversity of labour market experiences across the OECD labour markets. We argue that the prolonged adjustment view can overcome these problems since it implies that the short, medium, and long runs are interrelated, merging with one another along an intertemporal continuum.
J.E.L classification codes: E22, E24, J21, J30
Keywords:Unemployment, Interactive labour market dynamics, Interplay of lags and shocks, Frictional growth, Growth drivers