Workers' Compensation “Reforms,” Choice of Medical Care Provider, and Reported Workplace Injuries
利用双重差分法评估1990年代美国各州工人赔偿法改革对报告工伤频率的影响，发现索赔限制使严重工伤报告下降7.0%-9.4%，但对轻伤影响较弱，且限制医疗选择未减少任何非致命伤害。
In the 1990s, many states passed workers' compensation laws to control cost growth. Using a difference-in-differences approach, we determine the impact of these laws on the frequency of reported workplace injuries. In response to restrictions that make it more difficult to file claims, reported days-away-from-work injuries decline, accounting for between 7.0% and 9.4% of the dramatic fall in their frequency in 1991-1997. At the same time, these filing disincentives appear to account for 6.8% of the increase in cases with only restricted work activity, although the evidence is weaker for these injuries. Restricting workers' choice of medical care provider did not appear to reduce the frequency of cases in any nonfatal injury category. © 2003 President and Fellows of Harvard College and the Massachusetts Institute of Technology.