MKM Partners economist Michael Darda on the part-time jobs issue:
Yet, there is very little evidence that anything unusual is going on with part-time employment which has been falling in a seesaw pattern since the recession ended.
There has been a lot of misinformation on this issue, largely due to 1) the political spat over the ACA and 2) the tendency for the part-time labor share to rise in the first few months of the year only to fall back again.
Although the part-time labor share remains historically high, it has been falling in a jagged fashion since the trough of the recession with the entirety of the previous surge occurring during the Great Recession.
There does not appear to be any shift in the trend since 2010 when the ACA became law. In fact, the ratio has been coming down faster than it did after the last two recessions.
Indeed, as Mark Perry has noted, if you take out one outlier month, the 2013 growth in part-time employment falls from 59% to 19% of jobs added. Moreover, over the past 12 months, part-timers have only made up 13% of job gains, which is less than usual.