The weekly incomes of Delhi’ daily-wage earners, most of them employed in the informal sector, dropped 57% as working days plummeted73% notes an analysis carried out the University of Chicago and the University of British Columbia. By early-May, weekly incomes had fallen to zero for nine of every 10 survey respondents, who mostly lived in slum clusters. Migrant workers were not part of the study.

The study also considered salaried, lower-middle…