Independent Project · Labor Market
1:1 Parity
Tests whether men and women earn the same pay for identical work across 150.8 million employment records. The answer is no: in the same role and city, women still earn 8% less.
The Problem
When discussing gender pay gaps, two irreconcilable narratives emerge: headlines stating women earn 20% less, countered by claims that comparisons are unfair because men and women work different jobs, hours, and risk conditions.
What I Built
A multi-chapter investigative website testing the most common justifications (profession, hours, risk hazard, bonuses, experience, children, and company size), comparing increasingly similar profiles until isolating what none of them can explain. Source code is open on GitHub.
Data Sources
RAIS 2023, 2024, and 2025 (Brazilian Ministry of Labor & Employment) · 2022 Census & Municipal GDP (IBGE) · HDI indices (Ipeadata).
Outcome
Within identical occupations and cities, controlling for background, women earn 8% less—a metric consistent across all three years analyzed. Neither hours nor hazard bonuses explain the gap, and across Brazil's 137 mesoregions, not one shows female wage superiority.
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