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			 In a speech at the Fed's annual central bank conference, Yellen laid 
			out in detail why she feels the unemployment rate alone is 
			inadequate to evaluate the strength of the jobs market and why the 
			central bank needs to step gingerly. 
 Her remarks were followed by a speech by the head of the European 
			Central Bank, Mario Draghi, who said the ECB was ready to use all 
			the tools at its disposal to lift euro zone inflation if it 
			continued to drop. He said, however, that most factors that had 
			weighed on prices appeared temporary.
 
 Together, the comments from Yellen and Draghi underscored how both 
			central banks were wrestling with the complexities of labor markets 
			still-wracked by the 2007-2009 financial crisis.
 
 Yellen stood by her view that significant slack remains in the U.S. 
			economy, even as she nodded to the counter-arguments of some of her 
			colleagues who feel labor markets are tighter than she believes and 
			inflation a risk.
 
             
			"There is no simple recipe for appropriate policy," she said, 
			arguing for a "pragmatic" approach that focuses on incoming data 
			without committing to a preset policy path.
 Ahead of her comments, a number of top Fed officials pressed their 
			case for an early hike in benchmark rates, which the U.S. central 
			bank has held near zero since December 2008.
 
 Philadelphia Fed President Charles Plosser, a voting member of the 
			Fed's policy panel this year, and two non-voters - St. Louis Fed 
			President James Bullard and Kansas City Fed President Esther George 
			- all sounded warnings on the risk of falling behind the curve.
 
 "I'd rather see us start to raise rates earlier and try to go slow 
			than to wait until the last minute," Plosser told Reuters in an 
			interview in Jackson Hole.
 
 LABOR MARKET SLACK
 
 Yellen said the Fed was struggling to determine the degree to which 
			the still-soft U.S. labor market was suffering from long-term 
			structural shifts beyond the central bank's reach as opposed to more 
			temporary factors that low rates could address.
 
 Given the uncertainty, she said assessments of the labor market 
			"need to become more nuanced." Some officials argue the welter of 
			labor market data Yellen likes to parse offers little useful 
			information beyond the jobless rate and pace of hiring.
 
 Financial market reaction to Yellen's remarks was muted, with prices 
			for U.S. stocks and most Treasury securities largely unchanged. The 
			dollar, however, moved higher, while the yield on the 30-year 
			Treasury bond fell.
 
 "Janet Yellen confirmed the majority view of the (Fed's policy 
			committee): much more labor recovery is needed before the Fed raises 
			policy rates," said David Kotok, chairman of Cumberland Advisors in 
			Sarasota, Florida.
 
 Draghi's remarks, in contrast, marked a rhetorical escalation 
			regarding the ECB's readiness to take further steps to bolster a 
			euro zone economy that failed to grow in the second quarter and 
			which has seen inflation drop to just 0.4 percent.
 
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			The ECB, he said, would "use all the available instruments needed to 
			ensure price stability over the medium term."
 Still, he largely focused on the plight of labor markets, calling 
			for a more cohesive response from policymakers across the single 
			currency bloc to tackle unemployment.
 
 "The way back to higher employment ... is a policy mix that combines 
			monetary, fiscal and structural measures at the union level and at 
			the national level," he said.
 
 Yellen's speech included lengthy references to the possibility the 
			U.S. labor market may in fact be tighter then it seems, and she 
			acknowledged the Fed may have to raise rates sooner and faster than 
			expected.
 
 But, overall, Yellen's remarks marked a defense of her premise that 
			significant slack remained in the jobs market, even though she said 
			the 2007-2009 financial crisis and recession damaged the economy and 
			work force in ways not fully understood.
 
 The Fed has said it would wait a "considerable time" after winding 
			down a stimulative bond-buying program in October before raising 
			rates. Financial markets currently expect a rate hike around the 
			middle of next year.
 
 
			
			 
			Determining the degree of labor market slack has become the central 
			debate at the Fed. Yellen wants to be sure employment has recovered 
			as fully as possible before raising rates.
 
 In contrast, the inflation "hawks" worry that more months of 
			near-zero rates will cause inflation or possible asset bubbles.
 
 "If we're trying to solve a labor market problem, (Yellen's) speech 
			enumerated just how hard that is," Plosser told Reuters. "Some of 
			the things she alluded to we just can't fix."
 
 (Reporting by Howard Schneider, Michael Flaherty and Jonathan 
			Spicer; Additional reporting by Luciana Lopez in New York; Editing 
			by Tim Ahmann and Paul Simao)
 
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