She married a classmate, Charles Scott, and worked at General Radio in Cambridge, Massachusetts, while Scott attended Harvard Law School. They divorced several years later when Ostrom began contemplating a Ph.D. After graduation, she had trouble finding a job because employers presumed that she was only looking for jobs as a teacher or secretary. She began a job as an export clerk after taking a correspondence course for shorthand, which she later found to be helpful when taking notes in face-to-face interviews on research projects. After a year, she obtained a position as assistant personnel manager in a business firm that had never before hired a woman in anything but a secretarial position. This job inspired her to think about attending graduate-level courses and eventually applying for a research assistantship and admission to a Ph.D. program.