We study the duration of monetary regimes in a simple neo-classical Phillips curve model. The model is an extension of Owyang (2001) and Owyang and Ramey (2001). In this paper, we consider the role of the duration of inflationary regimes on the average inflation rate in an international cross-section. We find that inflationary regimes in certain countries are duration dependent but anti-inflationary regimes are not. In addition, we find that countries with high central banker turnover switch from inflationary to anti-inflationary with lower probability.