Are workers without college degrees increasingly isolated in their workplaces?
Core argument: The isolation index, measuring the share of non-college workers at the establishment of the average non-college worker, fell from 0.787 in 2000 to 0.767 in 2020, suggesting slightly less exposure to fellow non-college workers.
American workplaces show an educational segregation, measured by the degree to which the establishment has mostly workers of similar education levels. Workplace isolation was particularly high for young and male workers without college degrees. Table 1 considers the level of education and the workplace segregation by education over time. The first column shows the well-known fact that American workers are becoming more educated. Column 2 shows that the isolation index, [which] measures the share of non-college workers in the establishment of the average non-college worker,has declined from 0.787 in 2000 to 0.767 in 2020, suggesting that non-college workers are exposed to slightly fewer non-college workers than in the past. The third column reports an adjusted isolation index, which subtracts the total share of non-college workers in the LEHD sample from the basic isolation index and shows an increase over time from 0.108 to 0.147. Non-college workers are being exposed to more college educated workers over time, but the increase in exposure is less than what one might expect given the overall increase nationally in education levels.


