May 7 (Reuters) - Futures tracking the Dow Jones Industrial Average turned negative on Friday after data from the Labor Department showed U.S. employers hired far fewer workers than expected in April. At 8:34 a.m. ET, Dow e-minis were down 45 points, or 0.13%, S&P 500 e-minis were up 10.5 points, or 0.25%, and Nasdaq 100 e-minis were up 168.5 points, or 1.24%. Moments before the data, Dow e-minis were up 100 points, or 0.29%, S&P 500 e-minis were up 10.5 points, or 0.25%, and Nasdaq 100 e-minis were up 41.25 points, or 0.3%. (Reporting by Shreyashi Sanyal in Bengaluru; Editing by Maju Samuel) Our Standards: The Thomson Reuters Trust Principles.