Online CAOHC Hearing Conservation Certification Courses

Frank Wartinger, Au.D. (Course Director #496199) leads high-quality courses with engaging instruction for occupational health professionals who administer audiometric testing as required by OSHA, MSHA, DOD and FRA regulations. To obtain their COHC certification, Occupational Hearing Conservationists are trained and credentialed through Council for Accreditation in Occupational Hearing Conservation (CAOHC) approved courses.

CAOHC courses through Earmark feature expert instruction from our team consists of three CAOHC Course Directors, three Doctors of Audiologist, an Occupational Health Nurse, and two CAOHC Council Members:

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

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

• Hannah Zdroik, Au.D., CCC-A

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

• Johns Hopkins School of Public Health

• Rutgers School of Public Health

To date, we have hosted over 160+ courses and trained 2,000+ students from all 50 US states and 12 countries.

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)

  1. October 22, 2025

  2. December 3, 2025

  3. January 15, 2026

  4. March 4, 2026

  5. April 14, 2026 (Co-presented with Rutgers School of Public Health)

  6. May 20, 2026

• Initial Certification (20 Contact Hours)

  1. October 28, 29, and 30, 2025

  2. November 19, 20, and 21, 2025

  3. December 10, 11, and 12, 2025

  4. January 21, 22, and 23, 2026 (Hybrid Virtual Course with in-person requirement on Day 3)

  5. February 17, 18, and 19, 2026

  6. March 9, 10, and 11, 2026 (Co-presented with Rutgers School of Public Health)

  7. April 7, 8, and 9, 2026

  8. April 27, 28, and 29, 2026

  9. May 12, 13, and 14, 2026

  10. June 8, 9, and 10, 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 ~$222):

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

• Printed study guide ($12 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 $142):

• Printed study guide ($12 value)

• 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

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.

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.