What is Occupational or Industrial Deafness?

Look it up in your law books. The precedents must have been established.

Occupational deafness is a partial or full loss of the ability to hear in one or both ears in can be a itermitant of perminant condition. This as th title sugest means the condition happened whilst at work.

The proceedure that follows tries to determin why and how this injury occured, firstly it must be determined the severity of the condition through specilist ear doctors, then it must be determined that it acctualy did happen at work (by studying what type of injury, severity and liklyness that it happened at the work place) I belive this is normally done by appointed independent risk assesor (or equivilent) .

Finaly the buisness is investigated to see if they were at fault, buisnesses are required to provide appropriate ear protection and tell there employees to use it, if theve done that and the person hasn’t worn them or not properly then the case is normaly discontinued there.

Thee are complications that mean there are extra steps and difficulties but those are independant to easch case.

It must be proven that on balance of reason that the deafness suffered was indeed caused by the environment in which the sufferer worked and not by any other unrelated issue .

I assume .

Hope this helps, the 3rd link is the best I think;

Industrial deafness is damage to a workers hearing due to said worker being subject to a noisy environment while carrying out his work duties. There are specialized test which are designed to show the percentages of what is industrial and what can be called natural deafness in any one worker . often his medical on employment will show his hearing status on commencement and the percentage is compared to that ~~

Take a look at this:

Should answer most of your questions!