The study examines whether the reduction in the timeframe for the completion of university studies in Greece will affect students of different socio-economic background disproportionally. To this intent, it assesses the influence of the status of students, defined as working and non-working, on the duration of studies but the relevance of other variables, notably students' family income, is also examined. Combining administrative and survey data, the study estimates the probability of students' graduating after 4 and 6 years, respectively. The results reveal the existence of strong income discrimination between working and nonworking students. Among the non-working students, those coming from poor families complete studies earlier than wealthier students. For the working students, there is no income effect.