The Discussion Papers series presents results from ongoing research projects and other research and analysis by SSB staff, intended for international journals or books. The views and conclusions in this document are those of the author(s).
Using matched employer–employee data and a difference-in-differences design, we find that within-firm gender wage gaps fell by 2.2 percentage points (8.7 percent), driven by rising female wages. Effects are strongest in private-sector firms, industries with initially larger gaps, and municipalities that previously lacked easy access to printed tax lists. Wage gains are concentrated among job-changing women, suggesting that broad-based transparency mainly operates through improved information for job search.