Prior to his current appointment, Dr Davillas was an Associate Professor and (previously) Assistant Professor (Scale B) at the University of East Anglia. Before these appointments, he was a (tenured) Research Fellow (and, previously, post-doc researcher) at the Institute for Social and Economic Research, University of Essex (2013-2019).

He is also a Research Affiliate at HEDG, University of York, a Research Associate at ISER (University of Essex), a GLO Fellow, and a Research Fellow at the RWI Research Network.

His research covers a range of topics relevant to health production function and human capital theory, the social and economic determinants of health, health care demand, utilization of health services and health care costs, the role of energy deprivation on health/wellbeing outcomes, the economics of obesity, the economics of disability, the economics of prevention, the economics of risky behaviors, and socioeconomic inequalities in health and healthcare. Dr Davillas is also interested in the survey measurement of health and the implications of measurement error (in health measures) for the existing (health and labor) economics research.

On these topics, Dr Davillas has published papers in the Journal of Health Economics (4 papers), Health Economics (6 papers), Journal of Economic Behavior & Organization, Energy Economics (3 papers), Economics Letters, Review of Income and Wealth, Social Science & Medicine (2 papers), Economics & Human Biology (6 papers), Empirical Economics, and in high impact interdisciplinary journals (PLOS One and Scientific Reports).

He has been awarded the "Distinguished Author Award" by Health Economics (Wiley) in 2022.

Apostolos Davillas joined IZA as a Research Affiliate in November 2020.