The Bureau of Labor Statistics released its 2013 union membership report on Friday. The total union membership rate nationally was 11.3 percent (no change since 2012). The public-sector union membership rate was 35.3 percent and the private-sector rate was 6.7 percent. Washington's total union membership rate was 18.9 percent (4th highest in the country).
Additionally, Professors Barry Hirsch (Georgia State University) and David Macpherson (Trinity University) have estimated the rates of public- and private-sector unionization by state.
Washington's public-sector union membership rate was 57.0 percent (4th highest) and its private-sector rate was 11.7 percent (3rd highest).