Falls in marginal tax rates in America since the 1970s have made it all the more profitable to work longer.
自20世纪70年代以来，美国边际税率的下降使得延长工作时间更有利可图。
2
Unemployment rates for Americans nearing retirement are far lower than those for young people, who are recently out of school, with fewer skills and shorter work history.
接近退休年龄的美国人的失业率远低于那些刚刚毕业、技能更少、工作年限更短的年轻人。
3
Unemployment rates for Americans nearing retirement are far lower than those for young people, who are recently out of school, with fewer skills and a shorter work history.