Ann’s work focuses on international migration data, the production of knowledge on migration and the development of migration and asylum policy. She has advised the European Commission, the European Parliament, the Council of Ministers and EU Presidencies, national governments, NGOs and international organizations.
Between 1996 and 2002 she developed the Eurostat database on international migration and asylum. From 2002 to 2004 she was responsible for policy on statistics in the European Commission’s Directorate-General for Justice and Home Affairs. She wrote the European Commission’s Action Plans on migration and asylum statistics, prepared the first EU online annual report on migration and asylum and pioneered, with Eurostat, the first EU legislation on statistics on migration and international protection.