Where employees are exposed to ototoxic chemicals, such as some solvents, as well as noise, the Noise Exposure Regulations, 2024 apply 82 dBA instead of 85 dBA. Here is what counts as ototoxic, what changes at 82 dBA and how to assess both exposures together.

Under the Code of Practice for Audiometry, noise-exposed workers need a hearing test every 12 months, or every 6 months at or above 105 dBA or 135 dBC, plus baseline and exit tests. Here is the full schedule, who may test and what a threshold shift triggers.

The NIHL Regulations fell away on 6 September 2026. Here is how often the Noise Exposure Regulations, 2024 require noise risk assessments, monitoring and hearing tests.