- about
About Occupational Hygiene
International Qualifications
- The qualifications scheme
Introducing the framework - Qualification levels
What qualifications are available? - Qualification holders
Consult the worldwide directory
Organisations & People
- National associations
Discover your local OH society - IOHA
Learn about the International Occupation Hygiene Association - Workplace Health Without Borders
Learn about our sister organisation
About OHTA
- Purpose and principles
Why we exist and how we operate - Leadership Group
Who is behind OHTA? - Qualifications Group
Who sets the standards? - Stakeholders
How do I have a say? - Sponsorship and sponsors
OHTA guidelines and sponsor details
News
- The qualifications scheme
- training
- community











