In a traditional biography people are employed full-time in the once-learned occupation. Such a biography can be seen only as a discontinued model in the future. Retraining, continuation of one’s education, changes of occupation and job-motivated stays in foreign countries mark the vocational development. Consequently, growing significance must be given to the mobility readiness of trainees, employees and unemployed individuals. In four cross-sectional studies and one longitudinal study the question was addressed which predictors influence the geographic, job-required, and occupational mobility readiness. Besides the dimensions of mobility readiness contextual, socio-demographic, biographical, work-dependent, social, and personal variables were captured by questionnaires. The results show that social and personal variables played the key role in predicting geographic and job-required mobility readiness, whereas work-dependent and personal variables explained occupational mobility readiness. Socio-demographic variables which were primarily investigated in earlier studies could only reveal a small influence.