The measurement of labor supply using March CPS: A cautionary tale
研究发现，当前人口调查中常用的年工作小时估算存在系统性偏差，该偏差源于用周工作小时中位数而非均值乘以工作周数，导致年工作小时被高估。
I document evidence of a systematic bias in the widely-used estimate of annual hours worked using the Current Population Survey. The bias stems from multiplying the number of weeks worked by the median – instead of the mean – of weekly working hours. Theoretical and empirical evidence suggests that this bias leads to an overestimation of annual hours.