According to their findings a large part of sharing mental health struggles came from manager confidence - staff who felt their manager supported their mental health or could spot the signs that someone was going through a hard time were far more likely to say they would share their situation.
The survey of 44,000 workers by the charity Mind found that of those who suffered from mental health issues, only half have discussed the problem with their employer.
The new website comes as a survey finds that 48 percent of United Kingdom employees have experienced mental health problems in their current job.
The Duke of Cambridge, 36, shared the revelation while speaking at the launch of Mental Health at Work, a UK-based initiative that helps support mental health causes in the workplace. "The new online Mental Health at Work gateway will change that", Farmer added.
More than 58,000 working days were lost as a result at Yorkshire's fire, police and ambulance services, an increase of 33 per cent since 2014/15.
The Duke will give a speech during the event followed by Antonio Horta Osorio, chief executive of Lloyds Bank, who is expected to talk about his own experiences of workplace problems.
He said Lloyds would be making "substantial use" of the Mental Health at Work gateway, which he described as a "hugely impressive undertaking".
The project is run by Mind and Heads Together, the foundation set up by Prince Harry and the Duke and Duchess of Cambridge.
"People spend more time there than nearly anywhere else, yet research shows that it's also the place where we're least comfortable talking about mental health".
A recent poll by the Institute of Directors found less than one in five firms offered mental health training for managers.
"The Mental Health at Work website will help employers to get started, whatever their size - and I know what a godsend that will be for other employers and employees alike". Even small changes to policy, approach and workplace culture can make a really big difference to the mental health of those around us.