Decomposing the Barriers to Equal Pay: Examining Differential Predictors of the Gender Pay Gap by Socio-Economic Group

Our article examines different predictors of the gender pay gap at the mean and for different income groups. Using the United Kingdom Household Panel Survey (UKHLS), we provide a detailed analysis of the effects of individual work histories, with up to 40 years of retrospective data examined alongside other key indicators. Work histories provide a powerful means of measuring the long-term effects of reduced labour force attachment on pay for women and for men. We find that gendered differentials in work-history account for 29% of the gender pay gap at the mean and that the effects of women’s reduced attachment vary by income group. We find men to earn a higher wage penalty to part-time work-histories than women, and find no evidence of a penalty to part-time work more generally in poor households. We conclude that gender equalisation policies need to reflect divergent needs by income group.