BACKGROUND AND OBJECTIVES: The study is concerned with family physicians in the transition phase from residency to practice. Factors relating to the decision to take up a career in family medicine rather than a different medical career are investigated. Further, incentives and disincentives for starting a family practice as well as factors influencing the decision about practice location and practice model are addressed. METHODS: In a prospective cohort study on physicians' career development, 88 family physicians and 437 physicians aspiring to a different medical career participated in a questionnaire survey on the reasons for their choice of specialty and career, their mentoring support, and their work-life balance aspirations. Quantitative and qualitative data were analyzed using hierarchical logistic regression and content analysis, respectively. CONCLUSIONS: Family physician tutors should actively approach trainees in medical school and residency, pointing out the advantages of family medicine in terms of continuity of patient contact and the wide range of illnesses and patients, as well as the prospect of a work-life balance tailored to personal needs. Unlike other countries, Switzerland started its structured residency-training programs only recently.