Which of the following is true regarding employee exposure limits to noise?

Employee exposure limits to noise are indeed dependent on the noise level. This means that different levels of noise exposure, measured in decibels (dB), dictate varying permissible exposure limits. The rationale behind this is that the higher the noise level, the shorter the duration of exposure that is considered safe. For example, OSHA has established specific limits which stipulate maximum allowable noise exposure limits based on the intensity of the noise, thereby ensuring that employees are protected from hearing loss and other negative health outcomes associated with prolonged noise exposure.

The other options do not accurately capture the nuances of noise exposure limits. They are not indefinite; rather, they have maximum allowable limits tied to specific decibel levels. They are not merely guidelines; they are regulatory standards intended to protect workers. Additionally, noise exposure limits are tailored to specific industries and work environments, acknowledging that different industries may encounter varying conditions and risks related to noise.