The sharp decline in U.S. union membership over the past 30-40 years is well known, but does it reflect a change in attitudes towards organized labor? In other words, is decreasing union membership accompanied by decreasing support for labor?
Of course, if attitudes have in fact changed, they might be both exogenous (membership declines because support decreases, leading to fewer unionization drives and less political support) as well as endogenous (support decreases because membership declines, as fewer people are exposed to unions and to the benefits of membership) to unionization levels. And, to some degree, attitudes and membership likely change independent of each other.
In any case, it’s worth taking a look at how attitudes towards labor have changed over the past few decades. In the graph below, I present simple trend data from the General Social Survey (GSS), which has been administered either annually or semi-annually since 1972. Every year, the GSS queries respondents’ confidence in a number of major societal institutions, including organized labor. Granted, there is a difference between having confidence in unions and supporting them per se, but I think it’s safe to assume that the former is a decent indicator of the latter.