The Commission’s national surveys on the prevalence, nature, reporting and impacts of workplace sexual harassment are world-leading as the first surveys of this scale and kind into the issue. The results of the fourth national survey conducted by the Commission, Everyone’s Business: Fourth national survey on sexual harassment in Australian workplaces (the 2018 National Survey), released in 2018, have informed the Commission’s findings as part of this Inquiry. The 2018 National Survey showed that rates of sexual harassment have increased significantly since the previous survey was conducted in 2012. During this Inquiry, the Commission has identified areas where the national survey can be further enhanced to better understand and respond to the pervasive nature of sexual harassment in Australian society. This section presents findings from the 2018 National Survey on the prevalence of workplace sexual harassment. It also discusses sexual harassment prevalence data from a range of other sources, and outlines some of the challenges relating to survey methodology, accessibility and the collection of data when estimating and comparing the prevalence of workplace sexual harassment. This section also examines complaints data relating to workplace sexual harassment collected by the Commission, state and territory human rights and anti-discrimination agencies and other regulatory agencies that handle sexual harassment matters. While not an indicator of prevalence, this type of administrative data can contribute to the evidence base to inform better prevention of and responses to sexual harassment in Australian workplaces. (a) 2018 National Survey (i) Key findings on prevalence of workplace sexual harassment The 2018 National Survey was conducted both online and by telephone with a sample of more than 10,000 Australians aged 15 and over and was representative of the Australian population in terms of gender, age and geographic location.3 Of a total sample of 10,272 people, 7,813 people said they had been in the workforce in the last five years.4 The survey asked those people who had been in the workforce in the last five years if they had experienced workplace sexual harassment at least once in that time.5 It also captured the types of sexual harassment experienced and the characteristics of people who had experienced sexual harassment. Respect@Work: National Inquiry into Sexual Harassment in Australian Workplaces • 2020 • 95