Within the congenitally deaf population there exists a sizeable number of individuals who are considered to be traditionally underserved. These individuals are characterized by severe communication deficits irrespective of modality (e.g., speech, sign language, reading, writing). Unfortunately, until now there has not been a comprehensive communication assessment approach that was appropriate for this population. Using a functionally based, ecological perspective the Northern Illinois University Research and Training Center on Traditionally Underserved Persons Who Are Deaf developed a work place communication assessment protocol that addresses limitations in previous assessment approaches. The workplace communication assessment protocol advocated within this manual provides a comprehensive description of the individual's communication abilities, workplace demands, communication discrepancies, and potential accommodations.