In the 1970's soaring prices of oil and other commodities led to stagflation - a combination of high inflation and high unemployment, which left no good policy options. If the Fed cut interest rates to create jobs, it risked causing an inflationary spiral; if it raised interest rates to bring inflation down, it would further increase unemployment.
Can it happen again?
Last week fears of a return to stagflation sent stock prices to a five-month low. What few seem to have noticed, however, is that a mild form of stagflation - rising inflation in an economy still well short of full employment - has already arrived.
True, measured unemployment isn't bad by historical standards, and inflation is in the low single digits. But inflation is creeping up, and it's doing so despite a labor market that is in worse shape than the official unemployment rate suggests.
Let's start with the jobs picture. The official unemployment rate is 5.2 percent - roughly equal to the average for the Clinton years.
But unemployment statistics only count those who are actively looking for jobs. Every other indicator shows a situation much less favorable to workers than that of the 1990's. A lower fraction of the adult population is employed; the average duration of unemployment - a rough indicator of how long it takes laid-off workers to find new jobs - is much higher than it was in the 1990's.
Above all, the weak job market leaves workers with no bargaining power, so they aren't getting ahead: wage increases have been minimal, and haven't kept up with inflation.
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http://www.nytimes.com/2005/04/18/opinion/18krugman.html?hp