Measuring labor-force participation and the incidence and duration of unemployment
发现美国失业率、劳动力参与率和失业持续时间的官方统计数据存在内部矛盾，并提出统一修正方法，发现官方数据平均低估失业率和劳动力参与率约两个百分点，且高估了失业持续时间。
The underlying data from which the U.S. unemployment rate, labor-force participation rate, and duration of unemployment are calculated contain numerous internal contradictions. This paper catalogs these inconsistencies and proposes a unified reconciliation. We find that the usual statistics understate the unemployment rate and the labor-force participation rate by about two percentage points on average and that the bias in the latter has increased over time. The BLS estimate of the average duration of unemployment substantially overstates the true duration of uninterrupted spells of unemployment and misrepresents what happened to average durations during the Great Recession and its recovery.