Some economists expect inflation to pick up as the benefits of higher wages flow through the economy
Growth could fall below a 1% annual rate in the first three months of this year
A harsh winter may have contributed to U.S. employers adding just 20,000 jobs
The S&P 500 has gained about 309% since bottoming out in March 2009
But consumers will likely continue to drive economic expansion later this year
The decline is the result of a "temporary shock" from the government shutdown
Monthly gain supports view of a strong U.S. economy
Reasons stocks are falling, and why they could rise
Job growth offers reassurance about U.S. economy
In December, businesses add 271K jobs