OHTA approves training providers all over the world to run OHTA approved courses using the OHTA approved training materials and exams. OHTA courses have taken place in more than 50 countries since the scheme began.

What is OHTA?

OHTA is a not-for-profit organization that provides occupational hygiene training course materials and examinations as part of the International Training and Qualifications Framework in Occupational Hygiene. Its training modules are aimed at those starting their career, or requiring a refresher course, in occupational hygiene and focuses on the science and technology to assess and control risks to health from the working environment.

OHTA training modules are accepted towards meeting the IH/OH education requirement for those working toward the Internationally recognized CIH awarded by the Board for Global EHS Credentialling and other national IOHA NAR recognized accreditation schemes. OHTA is supported by the International Occupational Hygiene Association (IOHA), a global organization of over 42-member professional IH/OH organizations. All member associations are members of OHTA.


What does OHTA offer?

To provide consistency and quality of what is being taught, OHTA publishes a series of courses (called modules) covering a range of topics and levels. Most of the courses are designed to be taught by those qualified and experienced in occupational hygiene. This requires a Course Director with a qualification recognized by the National Accreditation Committee (NAR) IOHA (e.g. CIH, ROH, COH).

Each OHTA module has a comprehensive package of teaching materials - all authored and peer reviewed by subject matter experts from across the world.

OHTA has also established a process to appoint OHTA Trainers who have the required capability and resources to run these courses successfully. It considers its Trainers as valued partners in the effort to deliver occupational hygiene training around the world. OHTA’s aim is to improve the understanding and practice of occupational hygiene and contribute to a reduction in occupational illness and injuries.