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.
The study revealed around one in five have witnessed phrases linked to mental health being used in a derogatory way at work.
It also emerged nearly half of those who took part would make up a physical health excuse if they were off for a mental health reason, rather than discussing the problem with colleagues or managers.
Furthermore the survey, by the Mental Health Foundation for World Mental Health Day, found 11 per cent have been victims of abuse at work as a direct result of a mental health issue.
Overall one in three workers said they wouldn’t dare bring the subject up with senior staff for fear of being marginalised or losing their job.
Jenny Edwards CBE, chief executive at the charity said: “Despite growing awareness, there are sadly still too many people who don’t feel safe talking about their mental health at work.
“We are asking people to talk about mental health, but this must be matched with an ability to listen compassionately and act appropriately.
“We still hear examples of mental ill-health being used as a form of casual insult. This creates a culture where people don’t feel able to talk about their mental health at work or reach out for support when they need it.”
Forty per cent of workers felt their workplace culture wouldn’t allow them to be completely candid regarding concerns around their mental health, and just six per cent said they would feel comfortable disclosing a mental health issue on their CV when applying for a new job.
Employees aged 18 to 24 worry most about facing discrimination at work because of their mental health. One in four worry about the harassment they would receive if they were to disclose a mental health concern.
Conversely, 27 per cent of employees aged 25 to 34 think their mental health is none of the boss’s business.
The study also approached managers and employers to assess their view of mental health in the workplace in contrast to the views of their employees.
Twenty eight per cent have had a member of staff come to them with concerns surrounding their mental health, but only 42 per cent are certain which procedures to follow when a mental health issue is raised.
In fact, almost a quarter of managers polled believe their place of work doesn’t have an established procedure to follow for mental health enquiries, and 52 per cent think their workplace could make improvements to current systems and attitudes to take the mental health of workers more seriously.
Two thirds want to see additional mental health days added to annual leave allowance for employees to use to prioritise their wellbeing before problems take hold.
When it comes to physical versus mental health, 62 per cent of managers agreed taking time off due to physical illness or injury is treated more seriously in the workplace than taking time off to improve mental wellbeing.
One in five employees thought it would be inappropriate to send flowers to a colleague who has taken time off work for an extended period of time due to their mental health.
As for leniency surrounding mental health concerns, a fifth of managers thought mental health queries leveraged by top-level members of staff were treated more seriously than concerns raised by lower-level members of staff.
A separate report by the Mental Health Foundation found that people living with mental health problems contribute 225bn to the economy each year, something they say should make employers wake up to the need to protect that contribution.
Chris O Sullivan, head of business development at the charity said: “Healthy workplaces recognise the contribution of employees living with mental health problems and support open disclosure. A culture that must be lead from the very top.”
The Foundation have published a guide (https://www.mentalhealth.org.uk/publications/how-support-mental-health-work) and are calling on people to use it to make their workplaces more ‘mentally friendly’.