In 2017, South Korea’s total fertility rate was 1.26 live births per woman, the sixth-lowest in the world. Employment is significantly negatively associated with second births in Korea. To increase fertility rates and help working women better balance work and family lives, a series of government family-supportive workplace policies and employer-provided occupational benefits have been implemented and expanded. The present study examined the effects of family-supportive workplace policies and benefits on boosting working women’s fertility intentions in Korea by the current number of children (i.e. parity). Using the 2007–2012 Korean Longitudinal Survey of Women and Families (N = 3,405 working women), the study examined seven family policies and benefits. Results revealed that childcare leave was significantly associated with increasing working women’s first birth intentions. Also, women’s second birth intentions increased significantly when they had more family-supportive provisions at their workplaces. Despite these results, a majority of women perceived the family provisions to be unavailable at their workplaces. The present study underscores that women’s fertility decisions differ significantly by parity and informs policymakers in their efforts to develop family provisions that address these differences and make family provisions more readily available.