While employee relations investigations are an important part of organisational practice for managing workplace issues, there is growing evidence of the significant harm they can cause to individuals being taken through them. This harm can also spread further to those involved in their delivery, as well as impacting organisational culture and reputation, leading to financial and economic harm. Under Investigation proposes a shift in mindset that prioritises employee wellbeing alongside the application of the process, reducing potential harm and creating healthier work environments. Based on a programme of work and research within NHS Wales, it explores the wider impact of employee investigations, considers new approaches to applying disciplinary policy and includes a call to the human resources profession for change.