One underappreciated way to reduce inequality: Work more

Bestselling books on income inequality attribute the issue to various factors, including global capitalism, poor domestic policies, and the behavior of capitalists. However, hard work also plays a significant role, contributing about 20% of the variance in lifetime earnings in the U.S. According to research from economists at Princeton, Vanderbilt, and the Federal Reserve Bank of St. Louis, both the total hours worked and investment in human capital influence earnings.