This paper is devoted to a new estimation of the non-accelerating inflation rate of unemployment (NAIRU) for the West German Economy 1980 to 1998. The novelty of the paper is the estimation of a time-varying NAIRU for West Germany employing the Kalman method together with confidence intervals based on the application of a residual based bootstrap. As a result, the NAIRU for 1998 is estimated to lie between 7.9 and 8.5 percent. However, based on a presentation of the theoretical framework and a discussion of serious methodological problems the paper emphasizes several caveats which leave some doubts about the usefulness of the value of NAIRU estimates as guides for economic policy.

Franz, Wolfgang (2000), Neues von der NAIRU ?, ZEW Discussion Paper No. 00-41, Mannheim. Download