Nearly half of workers in London suffer from mental health problems in the office, and most do not tell their bosses, a new study from health startup Mynurva has found.
Employees fear telling people about problems could get in the way of their career, or damage relationships with co-workers.
The study of 2,000 adults found that 44 per cent of workers in London reported mental health problems, higher than the 37 per cent UK average.
It also showed Londoners were less likely to seek professional help for their problems, and a majority fail to tell managers.
Bosses also have serious issues with their mental health, a second study from health insurer Bupa Global showed.
Over 60 per cent of senior business leaders say they have suffered from conditions like anxiety, stress and depression, with work playing an contributory role.
A quarter of the 1,500 managers surveyed said it had become more difficult for them to speak about their issues since being promoted.
Mental health is becoming an increasing problem among the workforce, with 44 per cent of employers saying reports of issues are increasing, while half of long-term absence among office workers are attributed to stress.
Bupa Global corporate director Patrick Watt said: “Business leaders are not immune to mental health challenges, and in some case can be especially vulnerable.
“Pressures that come with the job, such as frequent travel and being away from family, can be overwhelming.
“In addition there’s a worrying association between mental health and inability to lead, which makes the topic taboo.”