Once more, abbreviations and acronyms take a story into the realm of “does this mean ________ or does it mean ————.”
I assume DI means DISABLITY INSURANCE, but I am not 100% sure.
Yes, DI means “disability insurance”. From the article:
‘”In Family Welfare Cultures (NBER Working Paper No. 19237), Gordon Dahl, Andreas Kostol, and Magne Mogstad analyze this question using data from the Norwegian disability insurance (DI) system.”’