The effectiveness of medical and vocational interventions for reducing sick leave of self‐employed workers
利用荷兰一家大型私人保险公司的行政数据，研究医生和职业专家的干预能否减少自雇工人的病假时长，发现两种干预反而延长了病假。
We investigate whether interventions by (a) medical doctors and (b) occupational specialists are effective in reducing sick leave durations among self-employed workers. Therefore, we exploit unique administrative data comprising all sick leave claims by self-employed workers insured with a major Dutch private insurer between January 2009 and March 2014. We estimate a multivariate duration model dealing with nonrandom selection into the two intervention types by controlling for observable and unobservable claimant characteristics. We find adverse treatment effects for both interventions, irrespective of whether they are started early or (middle) late in the sickness spell.