Putting Together the Pieces of the Puzzle: Explaining German Labor Market Reforms with a Modified Multiple‐Streams Approach

This article applies a modified Multiple‐Streams Approach (MSA) to the German Hartz IV labor market reform, probably the most far‐reaching policy project since unification, which many theoretical approaches have substantial difficulties explaining. Empirically, the article provides the first encompassing explanation of the Hartz IV reform by putting together the empirical pieces of the overall puzzle. Theoretically, the article demonstrates that the extension of the MSA by Herweg, Huß, and Zohlnhöfer (HHZ) is fruitful regarding the adaptation of the MSA for decision making and regarding their hypotheses and operational definitions which allow a rigorous empirical analysis and provide the possibility to prove the MSA wrong. In contrast, HHZ's adaptation to parliamentary systems turn out to be less suitable for the case. Moreover, the point at which the political stream is considered to be ready for coupling needs reconsideration. It is argued that it suffices that some key political actors become interested in a proposal; in contrast, the necessary majorities for an adoption of the proposal need not be forthcoming already because these can still be organized during decision‐coupling.