Andrew Harrison was CEO of Carphone Warehouse when a young colleague took his own life in the 1990s. He is now chair of trustees at The Mix, a UK charity that provides support to people under 25, and is Ocado’s designated director for the workforce. In our latest thought piece on mental heath and suicide in the workplace, Here, Andrew reflects on the impact that suicide had on the workforce and employers’ responsibility to offer employees – those new to employment especially – a safe, welcoming environment.