Tinnitus has more than one possible cause. For example, more than 200 medications are known to have tinnitus as a side effect. Exposure to bomb blasts is another cause, making tinnitus one of the most common service-related disabilities among combat veterans.
But work-related tinnitus is most commonly caused by the same exposure that causes hearing loss: occupational noise. So if you are working to prevent noise-induced hearing loss, you are also doing what you need to do to prevent noise-induced tinnitus.