The Employment Effects of the Social Security Earnings Test
研究了美国社会保障年度收入测试对63-64岁老年人就业率的影响，发现该测试使就业率至少下降1.2个百分点。
Abstract We investigate the impact of the Social Security Annual Earnings Test (AET) on the employment decisions of older Americans. The AET reduces Social Security benefits by one dollar for every two dollars earned above the exempt amount. Using a differences-in-differences design, we find that the employment rate of those predicted to become subject to the AET decreases substantially relative to those not predicted to become subject to it. The point estimates suggest that the AET reduces the employment rate of Americans aged 63-64 by at least 1.2 percentage points.