I quantify the effects of welfare work exemptions on women's labor force participation and welfare receipt. This study, which also examines the age of youngest child (AYC) exemption, is the first to investigate the pregnancy exemption. Between‐state and within‐state variations in exemption length allow me to estimate the heterogeneous effects of each exemption by its timing and strictness. I find that the effects on labor force participation are driven by employment for the pregnancy exemption, inducing relatively stable welfare receipts. In contrast, the effects are driven by unemployment for the AYC exemption, which triggers more reliance on welfare after birth. (JEL I38)