@TechReport{iza:izadps:dp2194, author={Lehmann, Etienne}, title={A Search Model of Unemployment and Inflation}, year={2006}, month={Jul}, institution={Institute of Labor Economics (IZA)}, address={Bonn}, type={IZA Discussion Paper}, number={2194}, url={https://www.iza.org/publications/dp2194}, abstract={In this paper, I introduce money in the standard labor-matching model (Mortensen and Pissarides 1999, Pissarides 2000). A double coincidence problem makes Fiat Money necessary as a medium of exchange. In the long-run, a rise in the rate of money growth leads to higher inflation and higher unemployment, so the long-run Phillips curve is not vertical. The optimal monetary growth rate decreases with the workers’ bargaining power, the level of unemployment benefits and the payroll tax rate.}, keywords={search-matching;unemployment;Friedman rule;inflation}, }