Oil Shocks and Optimal Monetary Policy

This paper investigates how monetary policy should react to oil shocks in a microfounded model with staggered price-setting and oil as a non-produced input in the production function. We extend Benigno and Woodford (2005) to obtain a second order approximation to the expected utility of the representative household when the steady state is distorted and the economy is hit by oil price shocks. The main result is that oil price shocks generate a trade-off between inflation and output stabilisation when oil has low substitutability in production. Therefore, it becomes optimal to the monetary authority to stabilise partially the effects of oil shocks on inflation and some inflation is desirable. We also find, in contrast to Benigno and Woodford (2005), that this trade-off remains even when we eliminate the effects of monopolistic distortions from the steady state. Our results also shed light on how technological improvements which reduces the dependence on oil, also reduce the impact of oil shocks on the economy. This can explain why oil shocks have lower impact on inflation in the 2000s in contrast to the 1970s. Since oil has become easier to substitute with other renewable resources, the impact of oil shocks has been dampened.