Mr. Jahn has 40 years of experience in leadership and management of effective occupational health program implementation. He has special skills in the formulation of technical basis preparation for the many facets of industrial hygiene and exposure assessment programs. These include qualitative and quantitative risk management, selection and configuration of real time detection system sensors and instruments, respiratory protection, and lifecycle chemical management.

Mr. Jahn is a former Manager of Industrial Hygiene at the United States’ Department of Energy Savannah River Site, spending 7 years in implementing and managing that program. He has worked at consulting and government industrial hygiene implementation in private and government enterprises.

He has been actively engaged in activities with the American Industrial Hygiene Association (AIHA). He has led a number of volunteer groups and advanced their organization and discipline in fulfilling the needs of the members with products and services. He has been Chair of the Exposure Assessment Strategies Committee, Exposure Control Banding Committee, Real-Time Detection Systems Committee, and the Leadership & Management Committee spanning from 2013 to 2024.

Mr. Jahn was lead editor of the 4th Edition of the AIHA Strategy for Assessing and Managing Occupational Exposures in 2015. In 2016, Mr. Jahn was awarded the status of Fellow of AIHA. Mr. Jahn is also a Distinguished Lecturer in exposure assessment with the Fellows of AIHA.

In 2024, Mr. Jahn was the recipient of the Donald E. Cummings Award. The award recognizes outstanding contributions to the knowledge and practice of the OEHS profession through demonstrated practical application of scientific knowledge, advances in the practice of Total Worker Health, expansion of the profession through active collaboration via alliances and partnerships, and the creation of tools applicable beyond the OEHS profession.