Find all of your hearing & Ear protection here! Choose from a plethora of products that will fit any and all of your safety professional's needs! Protect the wearer and prevent hearing loss in noisy work environments. OSHA standards call for hearing protection that reduce exposure to below 85 dB over the course of an average 8-hour work shift to avoid noise-induced hearing loss (NIHL). Earplugs are rated with the Noise Reduction Rating (NRR).