European migration policies are characterised by a fundamental paradox: they are getting tighter and tighter just while public opinion is becoming more favourable to migrants and the immobility of European citizens expands the scope for spatial arbitrage, accruing the benefits, of immigration....

Firing frictions and renegotiation costs affect worker and firm preferences for rigid wages versus individualized Nash bargaining in a standard model of equilibrium unemployment, in which workers vary by observable skill. Rigid wages permit savings on renegotiation costs and prevent workers from...