The match hypothesis proposed by S. Cohen and T. A. Wills (1985) is extended, and the buffer effect of social support is tested within a longitudinal study with objective measures (N = 90 male blue-collar workers in the German metal industry). Stressors at work were ascertained by observers and a variant of a peer rating. Psychological, physical, and social stressors at work and leisure time stressors were ascertained. The dependent variables of dysfunctioning were psychosomatic complaints, depression, irritation/strain, and (social) anxiety. There were moderator effects of social support on the relationship between stressors and psychological dysfunctioning. Results are in line with the match hypothesis as social stressors and socially oriented aspects of psychological dysfunctioning were affected most strongly.