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International Migration with Heterogeneous Agents: Theory and Evidence

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Temporary migration, though empirically relevant, is often ignored in formal models. This paper proposes a migration model with heterogeneous agents and persistent cross country income differentials that features temporary migration. In equilibrium there exists a positive relation between the stock of migrants and the income differential, while the net migration flow becomes zero. Consequently, existing empirical migration models, estimating net migration flows, instead of stocks, may be misspecified. This suspicion appears to be confirmed by our investigation of the cointegration relationships of German migration stocks and flows since 1967. We find that (i) panel-unit root tests reject the hypothesis that migration flows and the explanatory variables are integrated of the same order, while migration stocks and the explanatory variables are all I(1) variables, and (ii) the hypothesis of cointegration cannot be rejected for the stock model.
Original languageEnglish
Publication year2005
Publication statusPublished - 2005
EventEuropean Trade Studies Group, ETSG - Dublin, Ireland
Duration: 8 Sep 200510 Sep 2005

Conference

ConferenceEuropean Trade Studies Group, ETSG
CountryIreland
CityDublin
Period08/09/200510/09/2005

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