Norsk Yrkeshygienisk Forening (www.nyf.no)

Work Place Health Without Boarders (www.whwb.org)  

International Occupational Hygiene Association (www.ioha.net) 

American Industrial Hygiene Association (www.aiha.org)

American Conference of Governmental Industrial Hygienists (www.acgih.org)

British Occupational Hygiene Society (www.bohs.org)

OH Learning (www.ohlearning.com)