In a shift that some experts believe exacerbates already deep inequalities in the U.S. economy, more Americans than ever are working from home, and many are likely to continue to do so even after the health threat from COVID-19 has abated. With cases of the virus still on the rise, about 40% of the U.S. labor force is working from home. They are five times as likely to have a university degree as those who are not, Stanford University professor Nicholas Bloom said at an event convened on Thursday by the San Francisco Federal Reserve Bank to discuss the future of work.