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Occupational Hearing Conservationist

How to Become Certified as an OHC

To become a Certified Occupational Hearing Conservationist (COHC), a candidate must complete a Council for Accreditation of Occupational Hearing Conservation (CAOHC)-approved, 20-hour certification course and earn a passing score on the exam.

Students take their assessment-based certificate exam at the end of the 20-hour, full certification course. The exam questions reflect only information presented in the course. There are no prerequisites for this course or the exam.

For a full review of the course curriculum and domains tested, visit the OHC Course Curriculum section.

COHC Training

Course registration fees vary among locations and Course Directors.

Search for occupational hearing conservationist (OHC) courses by state, country, month, year or Course Director (CD) name. You can leave any field blank and can select non-US countries from the state list by scrolling to the bottom of the menu. For a map of all courses and locations, click here.

To register for an OHC course, contact the CD. CAOHC does not manage registration for individual courses.

The courses listed on this website are CAOHC-approved. On completion of the course, you are eligible for OHC certification. To complete the certification process, your CD submits your application and  fee to CAOHC. For more information on certification, click here.

Certification courses are 20 hours (usually over 2.5 days). Recertification courses are 8 hours (1 day).

OHC Course Search

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