Rising between-workplace inequalities in high-income countries documents a widespread tendency for between workplace earnings inequalities to rise in multiple high-income countries. Increasingly inequalities are between, rather than within, workplaces.The pace of wage shifting varies between countries, accelerating when nations reduce working class labor market protections.

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Top earners are increasingly working together. This 30-year, 12-country trend is fueled by deindustrialization, workplace restructuring, and digitalization.

While the increase in financial activities before the global financial crisis led to a boom in financial earnings and fueled the increase in the top one percent's share of earnings, the decline in financial activities after the global financial crisis did not significantly reduce financial wages or inequality at the top of the earnings distribution.

Across nine countries, about three-quarters of the immigrant–native pay gap stems from immigrants being concentrated in lower-paying occupations and firms, rather than being paid less for the same work. Unequal access to high-paying jobs—more than unequal pay within jobs—emerges as the main driver of immigrant earnings disadvantage.

Women earn less than men both because they are sorted into lower paying jobs and because they are paid less when doing the same work for the same employer. Across 15 countries, differential pay for the same work typically accounted for 40 to 60 percent of the total gender gap in pay.