Olivier is Head of the Children's Well-Being Unit at the OECD Centre for Well-Being, Inclusion, Sustainability and Equal Opportunity, which among other things is responsible for the Child Well-Being Data Portal. His recent work focuses on child well-being measurement and policies, family and child poverty, services for families and the policy challenges raised by the diversification of family living arrangements. His last publication include: Looking beyond COVID-19: Strengthening the role of family support services; Treating all children equally? Why policies should adapt to evolving family living arrangements; Child poverty in the OECD: Trends, determinants and policies to tackle it; he also contributed to Changing the Odds for Vulnerable.