Despite the implications for policy, empirical evidence on the relative importance of factors that shape labor supply responses is missing. This paper helps fill this gap and quantifies the role of information frictions versus other frictions by combining notches in the Norwegian welfare system and quasi-experimental variation in access to information about the slope and location of kinks. While we estimate a frictionless elasticity of 0.3, overall frictions attenuate this elasticity by about 70 percent. We find the information letter increased the earnings elasticity from 0.06 to 0.15, implying that information frictions account for at least 30 percent of total attenuation. (JEL D83, H24, I38, J22, J28, J31)

中文翻译：

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劳动力供应对学习税收和福利表的反应

尽管对政策有影响，但缺乏关于影响劳动力供应反应的因素相对重要性的经验证据。本文通过结合挪威福利体系中的缺口和获取有关斜率和扭结位置信息的准实验变化来帮助填补这一空白并量化信息摩擦与其他摩擦的作用。虽然我们估计无摩擦弹性为 0.3，但整体摩擦使这种弹性减弱了约 70%。我们发现信息信函将盈利弹性从 0.06 增加到 0.15，这意味着信息摩擦至少占总衰减的 30%。（JEL D83、H24、I38、J22、J28、J31）