At what dB level must hearing conservation programs be implemented?

Hearing conservation programs are designed to protect employees from hearing loss due to exposure to high noise levels in the workplace. According to regulations, such as those outlined by the Occupational Safety and Health Administration (OSHA) in the United States, hearing conservation programs must be implemented when noise exposure levels exceed 85 decibels (dB) averaged over an 8-hour workday.

This threshold is important because sustained exposure to sounds at or above this level can lead to permanent hearing damage. Implementing a hearing conservation program at levels greater than 85 dB ensures that effective measures are taken, including monitoring noise levels, providing personal protective equipment like earplugs or earmuffs, and conducting regular hearing tests for employees.

While the other options also reference noise exposure levels, the choice emphasizing that hearing conservation programs should start at levels greater than 85 dB aligns with regulatory standards and best practices in occupational health and safety.