OHTA was formed to promote better standards of occupational hygiene practice throughout the world.  We develop training materials and make them freely available for use by students and training providers.  We also promote an international qualifications framework so that all hygienists are trained to a consistent, high standard, recognized in all participating countries.

Our principles

OHTA began as an informal collaboration between dedicated occupational hygiene professionals who wanted people around the world to enjoy the benefits of healthy working environments.   It has matured into an international framework supported by many national occupational hygiene organisations and the International Occupational Hygiene Association.

OHTA operates with a few basic ground rules. Our aims are to be:

• Inclusive
• Straightforward
• Transparent
• Accessible
• Engaging

We believe that adhering to these operating principles will help to grow the global occupational hygiene community and encourage consensus standards.

Support and sponsorship

OHTA has no paid staff.  All time and effort is provided by volunteers and supporters. Operating costs are minimal but essential services are funded through sponsors who share the aims of OHTA.  Information about our sponsorship arrangements and details of existing sponsors are posted on OHLearning.com. We are constantly seeking new sponsors. 

OHTA partners with many other organizations to enable delivery of the international training and qualifications system.  Some of these organizations are commercial providers and we recognize their need to have a sustainable business model and to charge for their services.