Voice loss is a very general term including a wide range of impairments. There is detailed guidance on the prevention of voice loss but this is based on expert opinion and is untested in field research. IIAC concluded that diagnosis, causation and impairment were all too uncertain to warrant inclusion as a prescribed disease.
Evidence from:
Industrial Injuries Advisory Council (IIAC). Position Paper 16. March 2006.
“Occupational Voice Loss”
Further detail: