During the 1940s, four US states established a new form of social insurance, Temporary Disability Insurance (TDI), meant to provide wage replacement to breadwinners unable to work due to nonoccupational illness or injury. The first TDI state, Rhode Island, did not initially exclude coverage of pregnancy-related disabilities, threatening the health of the TDI trust fund. Administrators and lawmakers then sought to reduce or eliminate the pregnancy-related disability benefit on the grounds that pregnancy and related conditions were not “real” disabilities. Subsequently, Rhode Island administrators advised lawmakers in California, New Jersey, and New York to exclude pregnancy-related disabilities from coverage. The breadwinner gender ideology animating New Deal social welfare programs intersected with gendered ideas of disability, creating a form of social insurance that excluded or marginalized pregnancy-related disability and further circumscribed women’s social citizenship.