This chapter studies the link between working while studying and migration. Understanding this link is important because policy-makers are often calling for actions that would cut down the hours students spend on working to shorten the graduation time. The chapter’s analysis focuses on graduates from Finnish universities, polytechnics and vocational schools in 1991–2004. It uses rich register-based longitudinal microdata constructed by Statistics Finland, and find a negative relationship between working while studying and graduate migration. An increase in student employment can thus partly explain the decline in geographic mobility among Finnish graduates from higher education.