The relationship between supervisor and workers - The case of professional baseball in Japan

This paper analyzes the relationship between the workers' productivity and the supervisor from the point of view of the Matching Hypothesis using data from professional baseball in Japan. The main findings of this paper are the following three points. The first point is that the Matching Hypothesis is rejected in the case of pitchers and hitters. The second one is that the depreciation rate of the effect is about 10-15% per year and differs from zero significantly. Hence, the effect continues for a long time after the matching is broken. Lastly, we cannot find a learning curve for the managers' ability.