Corporatism Index

They answer different questions. The corporatism-analysis framework is qualitative and theoretical: it defines corporatism as a mode of interest intermediation in which encompassing peak associations of labor and capital bargain with the state, and it analyzes the institutions and mechanisms involved. A corporatism index is a quantitative operationalization of that concept: it selects measurable indicators, standardizes and aggregates them, and produces a comparable score or ranking. The index lets you test hypotheses statistically, but it depends on, and should be read alongside, the conceptual framework that tells you what the numbers are meant to represent.

Because the concept is multidimensional and there is no single agreed operationalization. Indices differ in which indicators they include — bargaining level, coordination, union density, concertation — and in how they weight them, and Kenworthy's review shows these choices materially affect the resulting ranks and the strength of correlations with economic outcomes. Countries near the middle of the distribution are especially sensitive to coding choices. The practical lesson is to check robustness across several scales rather than treating any one index as the definitive measure of corporatism.

A major motivation for scaling corporatism was the debate over its macroeconomic effects. Some scholars argued that encompassing, centralized bargaining internalizes the inflationary cost of wage demands, producing wage restraint and lower unemployment. Calmfors and Driffill instead proposed a hump-shaped relationship in which both highly centralized and highly decentralized systems perform well while intermediate, sector-level systems perform worst. Testing these competing claims requires placing countries on an ordered corporatism scale, which is precisely what the index provides, and the results have proven sensitive to the chosen measure.