本文研究了社会强度的相关性ractions among the unemployed. Identification is based on a salient and selective extension of the potential duration of unemployment benefits. If social interactions are important, this policy change affects entitled individuals not only directly, but also indirectly by altering the duration of unemployment in the reference group. Moreover, this spillover effect of the policy should also be observed in the non-entitled group. Results indicate that there are strong indirect effects on the entitled, strong positive spillovers on the non-entitled, and that social interactions are about as important as the direct effects of the policy change.