The Household, Income and Labour Dynamics in Australia (HILDA) survey is an Australian household-based panel study which began in 2001. It has been used for examining issues such as the incidence of persistent poverty; assets and income in the transition to retirement; the correlates and impact of changes in physical and mental health; and an international comparison of wealth and happiness. The survey is widely used by Australian and international researchers in the fields of economics, social science and social policy and by the Australian Government. The HILDA survey is managed by a small team from the Melbourne Institute of Applied Economic and Social Research at the University of Melbourne and the national fieldwork is carried out by ACNielsen and Roy Morgan Research.