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This paper estimates the response of interregional net migration to wage and unemployment differentials and the adjustment of relative wages over time in Britain. It finds that the regional system eventually eliminates disequilibrium unemployment differentials and adjusts to an equilibrium where a region's relative wage compensates for its unemployment differential at the rate 3:1 (i.e., 3 percent higher wage for a percentage point higher unemployment). Adjustment is very slow, so regional policy might save several person-years of unemployment by offering incentives for the faster movement of people and jobs. Copyright 1990 by Royal Economic Society.
Pissarides et al. (Mon,) studied this question.