I examine labor organization as a determinant of cross-national variation in life satisfaction across the industrial democracies. The evidence strongly suggests not only that unions increase the satisfaction of their own members, but, critically, that the extent to which workers are organized positively contributes to the satisfaction of citizens in general, non-members included. These hypotheses are confirmed using both aggregate-level pooled time serial and individual-level cross-sectional data across a number of countries. These relationships are shown to have an impact that is independent and separable from other economic, political and cultural factors. The implications for the study of subjective well-being per se and of labor organization as a more general social phenomenon within class societies are discussed. (Contains 15 endnotes and 4 tables.)