Do public attitudes concerning the European Union affect the speed with which member states transpose European directives? It is posited in this article that member state governments do respond to public attitudes regarding the EU when transposing European directives. Specifically, it is hypothesized that member state governments slow transposition of directives when aggregate public Euroskepticism is greater. This expectation is tested using extended Cox proportional hazard modeling and data derived from the EU’s legislative archives, the official journals of EU member states, and the Eurobarometer survey series. It is found that member state governments do slow transposition in response to higher aggregate public Euroskepticism. These findings have important implications for the study of European policy implementation, as well as for our understanding of political responsiveness in the EU.