If you look carefully at the chart, US nurse salaries are high because US salaries are high. The ratio of US nurse salaries to average US salaries is nearly the same as the OECD average.
Yes, it’s not specific to nursing. Labor costs are often high in the US, which goes a long way to explain why labor-intensive services cost more in the US, relative to other goods and services.
https://www.oecd.org/en/publications/2025/11/health-at-a-gla...