From the link:
"what really sets the current recovery apart from all its predecessors is this: Almost three years after economic growth resumed, the real value of Americans’ paychecks is stubbornly still shrinking. According to Friday’s Bloomberg Economics Brief, “the pace of income gains is well below that of the past two jobless recoveries and real average hourly earnings continue to decline.”
The Bloomberg report cites one reason for this anomaly: Most of the jobs being created are in low-wage sectors. According to Bloomberg, fully 70 percent of all job gains in the past six months were concentrated in restaurants and hotels, health care and home health care, retail trade, and temporary employment agencies. These four sectors employ just 29 percent of the country’s workforce but account for the vast majority of the jobs being created."