This article explores gender inequality in work–family balance since the pandemic from a comparative perspective. It examines the impact of COVID-19 restrictions on working mothers in the UK and South Korea, particularly the factors affecting their work–family balance. It also critically analyses work–family balance policies from a gender perspective. While a number of studies have examined work–family balance issues in both countries, there has been little comparative research on working mothers’ perceptions of the way childcare/unpaid work is distributed, and few policy comparisons involving the two countries. The findings from surveys conducted in 2020 show that mothers in both countries not only did more unpaid work but encountered challenges in balancing work and family during the pandemic. This article argues that policies must be further developed to promote equal sharing of paid and unpaid work between men and women.