Cyclical and welfare effects of public sector unions in a Real-Business-Cycle model

Motivated by the highly-unionized public sectors, the high public shares in total em- ployment, and the public sector wage premia observed in Europe, this paper examines the importance of public sector unions for macroeconomic theory. The model gen- erates cyclical behavior in hours and wages that is consistent with data behavior in an economy with highly-unionized public sector, namely Germany during the period 1970-2007. The union model is a significant improvement over a model with exogenous public employment. In addition, endogenously-determined public wage and hours add to the distortionary effect of contractionary tax reforms by generating greater tax rate changes, thus producing significantly higher welfare losses.