Jobseekers and representatives at a job fair at Brunswick Community College are seen in Bolivia, North Carolina, on April 11. Allison Joyce/Bloomberg/Getty ImagesLabor demand cooled more than expected in March, as the number of job openings in the US fell to their lowest level in more than three years, according to Bureau of Labor Statistics data released Wednesday.US employers had an estimated 8.49 million available jobs, according to the BLS’ Job Openings and Labor Turnover Survey (JOLTS) report released Wednesday. Economists were expecting 8.67 million openings, a lower total than the…