PurposeThis paper aims to overcome the limitations of studies on work-life balance, which have focused on Western countries without considering “mental” dimensions of gendered childcare. By concentrating on South Korea as a case study, this paper also aims to examine how the gendered division of childcare changed when Korea's work-life/family policy followed European work-family conciliation policy.Design/methodology/approachThe Korean Time Use Survey (KTUS) in 2009 and 2019 are used for multiple regression analyses. Based on discussions about theories on unpaid work distribution within households and its stratification effects, this study examines the relationship between wife's and husband's behaviors and the stratification effects in the gendered division of childcare alongside the work-life/family policy change.FindingsSubstantial findings indicate the necessity of strengthening various legal and institutional structures that might increase husbands' characteristics of caring masculinities. Additionally, while policies developed to support flexible working arrangements, low-income women at risk of being trapped in dual poverty of time and income should be carefully considered.Originality/valueThis study focuses especially on South Korea, thereby contributing to understanding how national policy and gendered distribution of childcare are related. Notably, this link has not been widely discussed in the literature on work-life balance. It also suggests viable directions for future policies depending on gender and socioeconomic status.