The page is located at http://www.osha.gov/dts/osta/otm/noise.

Noise, according to the government, is one of the most common health problems in American workplaces. The National Institute for Occupational Safety and Health (NIOSH) estimates that 30 million workers in the U.S. are exposed to hazardous levels of it.

Exposure to high levels of noise may cause hearing loss, create physical and psychological stress, reduce productivity, interfere with communication, and contribute to accidents and injuries by making it difficult to hear warning signals.

OSHA's eTool features information on what is considered occupational noise and its potential health affects. It also provides detailed guidance on how to properly evaluate noise exposure and what constitutes an effective hearing conservation program.

In addition, the site references OSHA noise exposure standards and employer responsibilities. OSHA requires the employer to determine if workers are exposed to excessive noise in the workplace. If they are, the employer must implement feasible engineering or administrative controls to eliminate or reduce hazardous levels of noise. If controls aren't sufficient, the employer must implement an effective hearing conservation program.

From BLR