Online CAOHC Hearing Conservation Certification Courses

Frank Wartinger, Au.D. (Course Director #496199) leads engaging CAOHC-approved certification courses for occupational health professionals who administer audiometric testing as required by OSHA, MSHA, DOD and FRA regulations.

Over the last decade we have hosted 170+ courses and trained 2,000+ students from all 50 US states and 12 countries. In 2020, Earmark Hearing Conservation collaborated with CAOHC to develop fully-virtual certification courses and has served as a pioneering provider of online training since. We partner with many major airlines, manufacturers, mines, food production facilities, and medical centers to ensure their clinicians receive the most advanced training available. 

Unique Team-Teaching Approach  Earmark's CAOHC courses feature multiple engaging expert instructors, which includes CAOHC Course Directors, Doctors of Audiology, Occupational Health Nurses, and CAOHC Council Members. You can get to know each instructor through the links below:

• Juan Vasquez, Au.D., Course Director #512452

• Mindy Guillory, RN, BSN, COHN-S, COHC, Course Director #490605

• Hannah Zdroik, Au.D., CCC-A

Interactive Technology  The course features advanced virtual audiometric training with simulated patients. This is made possible through a software platform developed by Earmark Hearing Conservation, which has since set the industry standard in virtual hearing training.

All inclusive Course Tuition  Transparent pricing includes the exam fee and access to all available official CAOHC course materials, including the new CAOHC official online Exam Prep software.

Earmark’s co-sponsors and affiliations include two NIOSH ERCs (Education & Research Centers):

• Johns Hopkins School of Public Health

• Rutgers School of Public Health

Upcoming Course Schedule:

Select Recertification or Initial Certification for the registration page and date options. Highlighted courses will take you to that date’s specific online registration page.

Recertification (8 Contact Hours)

• April 14th, 2026 (Co-presented with Rutgers School of Public Health)

• May 20th, 2026 (Co-presented with Johns Hopkins School of Public Health)

• June 16th, 2026

• Jul 8th, 2026

• Aug 4th, 2026

• Sept 14th, 2026

• Oct 7th, 2026

• Nov 10th, 2026

• Dec 2nd, 2026

Initial Certification (20 Contact Hours)

• April 7th - 9th, 2026

• April 20th - 22nd, 2026

• April 27th - 29th, 2026

• May 12th - 14th, 2026

• May 26th - 28th, 2026

• HYBRID COURSE June 8th - 10th, 2026 (Co-presented with Johns Hopkins School of Public Health)

• June 23rd - 25th, 2026

• July 14th - 16th, 2026

• July 27th - 29th, 2026

• August 24th - 26th, 2026

• September 8th - 10th, 2026

• September 22th - 24th, 2026

• October 12th - 14th, 2026

• November 2nd - 4th, 2026

• December 7th - 9th, 2026

Course Details

Earmark courses are all-inclusive, so there are no additional costs or fees for standard registration.

Initial certification course registration fee includes all the materials currently available (total value of ~$210):

• CAOHC 5th Edition Hearing Conservation Manual textbook, 2020 printing ($80 value)

• Official online COHC Exam Prep (60 day access, $20 value)

• Sample hearing protection devices ($10 value)

• CAOHC exam fee ($100 value)

• Additional online study materials and printed handouts (priceless…)

Re-certification course registration fee includes the primary materials (total value of $130):

• Official online COHC Exam Prep (60 day access, $20 value)

• Sample hearing protection devices ($10 value)

• CAOHC exam fee ($100 value)

• Note: the textbook can be purchased as an add-on option for $85, which includes domestic US shipping

Technology Requirements

To participate fully in an online course, each student must have access to the following equipment:

• Computer with reliable internet connection and a functional webcam

• Hearing protection devices (note: a packet of devices will be shipped out to each registrant 1-2 weeks prior to the course date.)

• Otoscope and a willing individual to serve as a stand-in patient for a few minutes during the practicum section (note: there are several work-arounds available if a student is unable to secure an otoscope or stand-in patient. Your instructors will discuss this detail further during the course.)

• Access to an audiometer is not required during the course due to the use of online simulators. However, many students report benefit from having access to a physical audiometer device for extended hands-on learning.

• Hybrid courses have slightly different requirements and registrants are instructed to review the details of each specific course carefully.

Typically, Full Certification courses are held from 9am to 4pm EST and Recertification courses are held from 8am to 4:30pm EST. Individual course agenda and schedules may vary and will be communicated prior to the course.

COHC Certification

Students will receive their COHC certification upon completion of a CAOHC approved course (conducted by a CAOHC certified Course Director) and receiving a passing grade on the computer-based examination at the conclusion of the course. The certification period is five years, at the end of which students are required to complete a re-certification course.

Course Topics

• Anatomy, Physiology, and Diseases of the Ear

• Manual Audiometric Techniques

• The Audiometer and Test Environment

• Audiogram Referral and Follow-up

• Noise Measurement and Control

• Hearing Protection Device Fitting and Training

• Federal and State Regulations

• Employee Training and Motivation

• Recordkeeping and Recordability

Course FAQs

Question: Is this CAOHC course fully online?

Answer: Yes! We offer entirely online CAOHC courses in which the lecture, practicum, hearing test training, and examination are all completed from your computer from your location.

Question: I prefer hands-on learning. Do you offer an in-person course option?

Answer: Yes! We have select dates marked for Virtual Hybrid courses. These consist of two days of online lecture and discussion, followed by one day of in-person practicum, hearing test training, and examination. The in-person day is hosted in beautiful Malvern, Pennsylvania.

Question: How is the examination completed?

Answer: Fully online. The exam is taken online by each student on their own laptop or computer. The exam proctored (student must remain on camera) and completed during the the final 75 minutes of the Initial Certification course and final 45 minutes of the Recertification course.

Question: I do not live/work in Pennsylvania. Can I take this course?

Answer: Yes! CAOHC courses are valid for attendees from all states and countries, since the C-OHC credential is an internationally recognized credential that does not connect to your state or local license. In fact, Earmark Hearing Conservation has trained individuals from all 50 states and 12 countries to date!

Question: Can we get a bulk discount for registering multiple members of our staff?

Answer: Yes! First, thank you for your continued support and trust in our training programs. We offer bulk discounts for organizations who register large numbers of individuals over a 12 month period. Please inquire to contact@earmarkhc.com regarding your specific situation.

Question: Is this course ADA accessible?

Answer: Yes! COHC candidates are responsible for notifying course directors (CDs) and/or sponsoring organization of any Americans with Disabilities Act (ADA) related issues with sufficient notice prior to the course date. Proper documentation will be required and discussed on a case-by-case basis.