Certification in industrial hygiene is a globally recognized way to demonstrate your expertise,
professionalism, and commitment to protecting workplace health and safety. Whether you are
advancing your career or entering the field, becoming certified shows that you meet rigorous
standards in the science and practice of occupational hygiene.
Why Get Certified?
Certification:
- Validates your technical knowledge and practical skills
- Enhances credibility with employers, regulators, and clients
- Opens doors to international job opportunities
- Shows commitment to ethical practice and continuous learning
- Contributes to the global mission of safer, healthier workplaces
Internationally Recognized Certification
The International Occupational Hygiene Association (IOHA) promotes global standards in
occupational hygiene certification through its National Accreditation Recognition (NAR)
program. Certification bodies approved by IOHA NAR ensure that certified professionals meet
consistent, high-level benchmarks around the world.
Examples of IOHA-recognized certifications include:
- Certified Industrial Hygienist (CIH) – United States (Board for Global EHS Credentialing)
- Chartered Occupational Hygienist – United Kingdom (BOHS)
- Registered Occupational Hygienist (ROH) – Canada (CRBOH)
- Many others around the globe
Steps to Become Certified
While specific requirements vary by country and certification body, the process generally includes:
- Education – Typically a degree in industrial hygiene, occupational health, science, or engineering
- Experience – Several years of professional work in occupational/industrial hygiene
- Examination – Passing a comprehensive exam on topics like exposure assessment, toxicology, risk management, and regulations
- Ethics and Continuing Education – Upholding a code of ethics and ongoing professional development
Finding a Recognized Certification Body
To ensure your certification is internationally respected, choose a body that is accredited by
IOHA NAR. You can find a list of recognized certification schemes and more information on
IOHA's official website:
https://ioha.net/occupational-hygiene-certification/