International monetary policy cooperation in economies with centralized wage setting

We consider a standard two-country monetary policy game with fixed nominal wage contracts. The policy regime is either non-cooperative or cooperative. We extend conventional analyses by deriving the natural rate of employment endogenously through monopoly union decision-making. As unions attempt to affect the real exchange rate, wages are set inefficiently high. Such attempts are shown to be strongest under monetary cooperation. Therefore, in comparison with non-cooperation, employment is lowest, and, in effect, consumer price inflation is highest, under monetary cooperation, i.e., international monetary cooperation is disadvantageous.