Noise induced hearing loss (NIHL) is one of the leading occupational diseases in the province of Quebec. NIHL is the second most frequent reported claims to the CNESST, moreover, it is the most costly occupational disease for the province of Quebec. As of 2010, each new case of NIHL cost 153 618$ and the total cost of NIHL was 667 million$ for the province. This cost is assumed by employers, the workers and the society in general.
Noise-induced hearing loss is a sneaky disease, a workers’ hearing acuity deteriorates slowly and it can take years before the worker becomes aware of the state of his hearing. Hard of hearing individuals tend to isolate themselves from their entourage. At work, they hardly identify instructions, alerts or signals which is in itself a risk of injury.