According to Hearing.org, certain occupational groups have a five times higher risk of hearing problems then others. This is due to noise exposure in the workplace.
In a study done by NIOSH was found that of people regularly exposed to occupational noise, 23% had hearing difficulties and 15% had tinnitus. Of people never exposed to occupational noise, only 7% had hearing difficulties and 5% had tinnitus.
Conditions would be worst in the manufacturing and engineering sector. Workers in agriculture and personal care and service occupations had significantly higher risks as well.
For everybody exposed to occupational noise, Dynamic Ear Company recommends the Crescendo PPE 20. The unique, flat attenuation results in reduction of sound levels equally over all frequencies, contributing to natural sound and clearer speech.