• •SSRN paper analyzes longitudinal income data to show that earnings instability at the top 1% has increased significantly over the last three decades.
• •Data indicates that rising top-end income inequality is increasingly driven by transitory shocks rather than permanent increases in human capital value.
• •The research leaves open whether these income fluctuations stem primarily from performance-based compensation structures or broader changes in corporate governance.

Recent research published on SSRN demonstrates that income volatility among the highest-earning individuals has grown substantially since the 1990s. While economists previously attributed top-tier wealth accumulation to permanent wage growth, this new data suggests that large, temporary earnings swings are the primary driver. However, the study does not fully decouple whether this volatility is a byproduct of high-risk incentive structures in finance and tech or broader macro-level labor market shifts. If these trends hold, it challenges the traditional view of executive compensation as a stable predictor of long-term economic prosperity.