I am frankly more concerned about four years of declining real wages for the middle class. If the labor market is really so tight, why aren't wages rising as supply and demand suggests they should?
I would guess that it takes time for substantive changes to take plce - the market only really tightened over the last 1-1/2 years. Many workers were listening to the mSM and Dims talking about a "jobless recovery" and were also likely a little on the shy side of pushing for higher wages. If it isn't going up in the next 6-9 months, I'll start to be concerned, but not yet.