​The Core Competencies for the Practice of Industrial/Occupational Hygiene, 2025 edition, originally published in 2012, provides guidance for those working at the IH technician, practitioner, and professional levels. This digital book outlines the essential knowledge, skills, and abilities that an IH/OH working at different levels of practice should possess.​​​

The new version is available for free download on the Marketplace for AIHA members. Nonmembers will be charged $19.95.

This ebook is applicable for several audiences:

  • Students ​gain an understanding of industrial hygiene and prepare for a career in IH/OH.
  • Academic programs may ​reference the document to design, review, and update curricula.
  • Employers establish career paths by setting expectations for knowledge and skill development assigned to IH/OH positions within their respective organizations.
  • Individual practitioners at all stages of their careers find it helpful as a guide to further their professional and career development.