In the University of Minnesota in 1961, Hurwicz became chairman of the Statistics Department, Regents Professor of Economics in 1969, and Curtis L. Carlson Regents Professor of Economics in 1989. He taught subjects ranging from theory to welfare economics, public economics, rules for large companies and mathematical economics. Although he retired from full-time teaching in 1988, Hurwicz taught graduate school as Professor Emeritus in the autumn of 2006. In 2007 his ongoing research was described by the University of Minnesota as "comparison and analysis of systems and techniques of economic organization, welfare economics, game-theoretic implementation of social choice goals, and modeling economic institutions." Professor Hurwiczs published works in these fields date back to 1944. Professor Hurwicz is known internationally for his good work researching economic theory, specially with rules for big businesses and governments using mathematical economics. In the 1950s, he worked with Kenneth Arrow on non-linear programming. Kenneth Arrow became the youngest person to receive the Nobel Economics prize in 1972. Hurwicz helped Daniel McFadden, who won a Nobel prize in 2000.