Igor Lebrun completed a master’s degree in econometrics at the Université Libre de Bruxelles (ULB) in 1990 and worked for the next two years as a researcher and teaching assistant at the ULB’s Department of Applied Economics. After working briefly at the Federal Planning Bureau (FPB), he joined the United Nations Development Programme. Back in Belgium by the end of 1995, he returned to his job as an economist at the FPB. He first worked within the team in charge of the medium-term model HERMES and later moved to the team preparing the Economic Budget. In 2001, he was appointed advisor to the General Directorate, where he monitors the activities related to macroeconomic modelling and projection methods. Since late 2011, he has chaired the Working Group of the Economic Policy Committee (EU) responsible for developing an assessment method for the output gap.