This commentary summarizes the authors' main points of agreement and disagreement with respect to the proposal written by Dr. Hetzel. The authors agree with Dr. Hetzel's proposal on four points: after a central bank has lowered the interest rate to zero, (1) a central bank is not in fact...

Various proposals have been raised with respect to a desirable framework of monetary policy under the zero interest rate in Japan. By taking due account of such proposals, this paper intends to examine monetary policy options under the environment of the zero interest rate. In so doing, we first...