A kink that makes you sick: The effect of sick pay on absence
利用回归拐点设计估计病假工资替代率对病假时长的影响弹性，发现弹性约为1，对设计最优社会保险方案有参考价值。
Summary We exploit a regression kink design to estimate the elasticity of the duration of sickness absence with respect to replacement rate. Elasticity is a central parameter in defining the optimal social insurance scheme compensating for lost earnings due to sickness. We use comprehensive administrative data and a kink in the policy rule near the median earnings. We find a statistically significant estimate of the elasticity of the order of one.