WASHINGTON (Reuters) - There was little turnover in the U.S. labor market in May, and the number of available jobs at the end of the month was virtually unchanged from April, government data showed on Tuesday. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=at34EDkYLGs:G7YYzlObSOk:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=at34EDkYLGs:G7YYzlObSOk:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/at34EDkYLGs)