From 1989 to 1990 he was an Associate Professor in the Department of Agricultural and Resource Economics of the University of Maryland, College Park, a Fellow of the Research School of Social Sciences of Australian National University from 1991 to 1992, a Senior Fellow from 1993 to 1994 and a Professor in 1995 at the Centre for Economic Policy Research of the Australian National University in 1995. From 1996 to 1999 Quiggin was a Professor of Economics and Australian Research Council Senior Fellow at James Cook University. From 2000 to 2002 he was an Australian Research Council Senior Fellow at the Australian National University and an Adjunct Professor at the Queensland University of Technology and the Inaugural Don Dunstan Visiting Professor at the University of Adelaide.