However, so-called "presenteeism" can be costing up to £26 billion, with employees coming into work despite mental health issues, resulting in a loss of productivity.
May has said the civil service and NHS will sign up to the new recommendations, and recommends the private sector to follow suit.
It also found that people with long term mental health problems were leaving their jobs double the rate of their colleagues.
"It's time for every employer to recognise their responsibilities and affect change, so that the United Kingdom becomes a world leader in workplace wellbeing for all staff and in supporting people with mental health problems to thrive at work", says Lord Stevenson.
He said it was always challenging within the society to discuss health issues with the stigma attached to mental issues, adding that mental health patients can be productive within the workplace, "and by raising this awareness, we can help reduce the stigma by bringing out to the public that there are professionals who are ready and available to help those in need".
CQC has found that, whilst most specialist services provide good quality care, too many young people find it hard to access services and so, do not receive the care that they need when they need it.
Under the Equality Act (2010), your employer has a legal duty to make "reasonable adjustments" to your work. For some, this is a short-term problem and they can continue at work, or return to work after sickness absence, with appropriate support.
Produce, implement and communicate a "mental health at work" plan.
The availability of temporary cover (including its cost). It includes research by audit firm Deloitte on costs to employers and the state.
The size of the organisation.
In the meeting, she was fine with it and was told "do what you need to do" but after the meeting, Hayley received an email being told she was going to be taken off her accounts and that she should think about seeking employment at a mental health charity as 'they might relate.' Working there for a few further months triggered Hayley to experience anxiety and depression.