WASHINGTON, Aug. 28—For the second time this year, estimated July construction unemployment rates fell in every state and nationally on a year-over-year basis, according to an analysis of U.S. Bureau of Labor Statistics data released today by Associated Builders and Contractors. The July 2018 not seasonally adjusted national construction unemployment rate fell 1.5 percent to 3.4 percent from July 2017. At the same time, the construction industry employed 303,000 more workers nationally compared to July 2017, according to BLS statistics. “Low July construction unemployment rates across the nation are the result of healthy construction activity, reflecting a tight construction labor market,” said Bernard M. Markstein, Ph.D., president and chief economist of Markstein Advisors, who conducted the analysis for ABC. “A number of records were set this month. For the third time since January 2000, when the ABC state estimates begin, all 50 state construction unemployment rates ...