Decline in Hours Worked Shows Weakness in Labor Market
(p. A15) Most commentators viewed the February  jobs report released on March 7 as good news, indicating that the labor market is on a favorable growth path. A more careful reading shows that employment actually fell--as it has in four out of the past six months and in more than one-third of the months during the past two years.
Although it is often overlooked, a key statistic for understanding the labor market is the length of the average workweek. Small changes in the average workweek imply large changes in total hours worked. The average workweek in the U.S. has fallen to 34.2 hours in February from 34.5 hours in September 2013, according to the Bureau of Labor Statistics. That decline, coupled with mediocre job creation, implies that the total hours of employment have decreased over the period.
. . .
. . . , although the U.S. economy added about 900,000 jobs since September, the shortened workweek is equivalent to losing about one million jobs during this same period. The difference between the loss of the equivalent of one million jobs and the gain of 900,000 new jobs yields a net effect of the equivalent of 100,000 lost jobs.
For the full commentary, see:
EDWARD P. LAZEAR. "The Hidden Rot in the Jobs Numbers; Hours worked are declining, resulting in the equivalent of a net loss of 100,000 jobs since September." The Wall Street Journal (Fri., March 17, 2014): A15.
(Note: ellipses, and bracketed year, added.)
(Note: the online version of the commentary has the date March 16, 2014.)