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FILE - In this March 7, 2012, file photo shows job seekers standing line during the Career Expo job fair, in Portland, Ore. Employers pulled back sharply on hiring last month, a reminder that the U.S. economy may not be growing fast enough to sustain robust job growth. The unemployment rate dipped, but mostly because more Americans stopped looking for work. The Labor Department says the economy added 120,000 jobs in March, down from more than 200,000 in each of the previous three months. (AP Photo/Rick Bowmer)

FILE - In this March 7, 2012, file photo shows job seekers standing line during the Career Expo job fair, in Portland, Ore. Employers pulled back sharply on hiring last month, a reminder that the U.S. economy may not be growing fast enough to sustain robust job growth. The unemployment rate dipped, but mostly because more Americans stopped looking for work. The Labor Department says the economy added 120,000 jobs in March, down from more than 200,000 in each of the previous three months. (AP Photo/Rick Bowmer)

Jobs recovery setback

Employers hired far fewer workers in March than in previous months, keeping the door open for the Federal Reserve to provide more monetary support for a still sluggish economy.