Sign is undertaking new research in order to improve inclusion of deaf people in their workplaces.
The national society for mental health and deafness will send its Reaching Deaf Minds in the Workplace report to all major employers who are members of the Employers Forum on Disability, and the UK Council on Deafness, once it is completed early next year.
"We're compiling information on every aspect of how deaf people are treated," said chief executive Steve Powell. "We've got all the horror stories and we're now looking at what recommendations we can make to enhance their lives."
The report will give evidence of exclusion at work, from team meetings run without sign language interpreters, to deaf people being left out of social activities.
It seeks to provide options to enable employers to go further than the minimum requirements of the Disability Discrimination Act, which doesn't protect deaf people from inadvertent discrimination.