Further education attainment is an important part of the work life, but its impact on occupational achievement is far less well understood thanbasic education. In this study, we examine the in£uence of further education on occupational upward and downward mobility and gender di¡erences in the in£uence. Further, we address selection bias involved in this process. The sample for the study includes both men and women from the 1945^51 and 1959^61 birth cohorts in the German-speaking part of Switzerland. We employ Cox's proportional hazards model to estimate the e¡ects of three di¡erent types of further education on the rate of upward and downward mobility, independent of basic education, work-related individual attributes, and labour-market factors. The ¢ndings show that further education aimed at a formal credential, such as advanced training and retraining, increases chances for upward mobility.We found that the association between credential-oriented further education and upward mobility is stronger for women than for men. It re£ects greater selectivity among female participants.We also found that further education participation has only a moderate negative e¡ect on downward mobility. Basic education remains an e¡ective measure against downward mobility.