Income disparity across countries has been large and widening over time. We develop a tractable model where factor requirements in production technology do not necessarily match a country's factor input profile. Appropriate assimilation of frontier technologies balances such multi-dimensional...

Over the past few decades, we find that about 80% of the widening residual wage inequality to be within jobs. We propose performance-pay incidence and job relatedness as two primary factors driving within-job inequality and embed them into a sorting equilibrium framework. We show that...