In vocational psychology there has been a growing effort to integrate different theories of career choice and development (Borgen, 1991; Hackett, Lent and Greenhaus, 1991; Savickas and Lent, 1994). As an attempt to find possible points of overlap between important variables in career choice and development this study explores the relationships between interest congruence, self-rated abilities, vocational self-efficacy and primary control, and the effect they have on job satisfaction and career decisiveness. The sample contains 284 young adults (18 to 21 years) from the German-speaking part of Switzerland who are carrying out a professional apprenticeship (of three or four years) and are about to enter the world of work. Correlational analyses reveal that the conceptually related constructs are positively correlated (interest congruence and self-rated abilities, self-efficacy and primary control). There also seems to be a close relationship between the two central, independent variables of the theory of Holland (1997) and the social cognitive career theory of Lent, Brown and Hackett (1994): interest congruence and vocational self-efficacy. Multiple regression analyses reveal that congruence and self-efficacy have the most effect on job satisfaction and career decisiveness, and thus should be considered as crucial and not interchangeable variables for a comprehensive view of career choice and development theories. (PsycINFO Database Record (c) 2006 APA, all rights reserved) (journal abstract)