Studies have examined the effect of one or more dimensions of work organization on the gender pay gap(GPG), often for a given occupation or sector of activity. However, research has rarely addressed the institutional and organizational determinants of the GPG with a focus on their embeddedness acrossdifferent contexts. This paper adopts an interdisciplinary approach to analyse how the regulation of work organization in collective bargainingis translated into practices shaping the GPG indifferent sectors in Spain. By comparing the chemical industry, financial servicesindustryand elderly care, this paper reveals how different constellations of intertwining inequalities take shape at the sectoral level. The findings suggest that collective bargaining strategies to close the GPG should tackle context-specific problematics but wouldalsobenefit from a reform of key cross-cutting issues in statutory regulation.