There has been much awareness generated about the underreporting of workplace harassment and discrimination over the past decade, but this research has almost exclusively focused on victims. Public awareness has particularly grown about sexual harassment (largely thanks to the MeToo campaign) and discrimination (thanks to the TimesUp income disparity campaign). However, the role of witnesses has remained largely ignored. Witnesses have the ability to alleviate some of the burden of reporting from victims, and can be helpful allies to victims of harassment and discrimination of any kind (not just sexual). This research will examine the role of witnesses in reporting workplace harassment and discrimination to employers. The study will involve an online survey, NGOs and made available in other public outlets. The three mains aims of the survey are to i) assess how many witnesses report it to their organisation’s leadership or HR, ii) identify the barriers to reporting, and iii) examine the health consequences of witnessing harassment and discrimination for witnesses.