From Washington  Post.com:
 
It is official: The United States is  in a recession—and it started a year ago.
The nation's economy peaked, and the  recession began, in December 2007, the National Bureau of Economic Research  announced today.
The group's Business Cycle Dating Committee,  the semi-official arbiter of these things, defines a recession as "a  significant decline in economic activity spread across the economy,  lasting more than a few months, normally visible in production, employment,  real income, and other indicators."
While analysts have been all but certain  that a recession has been underway for months, there has been some debate  over exactly when it began. Last winter, employers started cutting jobs  and growth slowed significantly, but the decline appears to have accelerated  over the summer.
The committee concluded that the start  of the recession was December 2007 -- due in large part, it said in  a statement, to the decline in jobs that began that month. But it noted  that many other data points confirm the diagnosis.
 
"The committee determined that the  decline in economic activity in 2008 met the standard for a recession,"  the group said in its statement. "Evidence other than the ambiguous  movements of the quarterly product-side measure of domestic production  confirmed that conclusion. Many of these indicators, including monthly  data on the largest component of GDP, consumption, have declined sharply  in recent months."
The NBER committee could eventually conclude  that the recession has already ended. However, economists outside the  group think that is unlikely, given that most economic data released  in recent weeks have been getting worse, not better.
 
The NBER is a private, nonprofit group  based in Cambridge, Mass. Its Business Cycle Dating Committee currently  includes seven leading macroeconomists, and they made the recession  call in a conference call Friday night, according to the group's statement.
 
