Millions of British workers would shy away from discussing mental health issues with colleagues amid a fear they could jeopardise their career, it has emerged.<br /> <br />Researchers uncovered the worrying statistic following a study carried out among 2,000 employees which showed 38 per cent wouldn’t feel safe being open about their mental health at work.<br /><br />The study revealed around one in five have witnessed phrases linked to mental health being used in a derogatory way at work.