In this article it is contended that the centrality (or salience) of b
eliefs is an important but overlooked feature of belief systems about
unions. This theme is pursued through a study of the centrality of bel
iefs about unions in a sample of Hamilton, Ontario workers. Each parti
cipant sorted 48 separate statements about unions, identifying those s
tatements with which she/he most agreed and most disagreed. These data
are analyzed in two distinct ways. First, the article outlines genera
l tendencies in the centrality of beliefs for the entire sample. Howev
er, people differ in what they think is most important about unions. T
herefore, the article also identifies the central beliefs for six typi
cal ways of thinking about unions.