Safety at work: physical and mental

Kathryn Ryan talks with Paul Litchfield, the chair of the UK's What Works Centre for Wellbeing, which is dedicated to promoting evidence for the improvement of wellbeing across society. He says safety ta work is not just about the physical environment, but also workers' mental health. He has held senior posts in occupational medicine in the UK's public and private sectors, including Chief Medical Officer for British Telecommunications for 15 years