1. 12a. Union membership and coverage in construction and other industries, 2015 and 2016

2. 12b. Union membership and coverage in construction, public vs
12b. Union membership and coverage in construction, public vs. private sector, 2015 and 2016

3. 12c. Union membership, selected construction occupations, 2015 (Wage-and-salary workers)

4. 12d. Subject Matter Experts ratings for each union for each sector

5. 12e. Union market share for the Heavy Civil/Industrial sector, 2005-2012

6. 12f. Percentage of construction workers who are union members, by state, average (Wage-and-salary workers)