We protect people and the businesses they run.™

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Safety & Compliance Resources

J. J. Keller protects people and the businesses they run. You can trust our expertise across a wide range of subjects relating to labor, transportation, environmental, and worker safety. Our deep knowledge of federal and state agencies is built on a strong foundation of more than 100 editors and consultants and 70+ years of regulatory compliance experience.

Company & Careers

J. J. Keller protects people and the businesses they run. You can trust our expertise across a wide range of subjects relating to labor, transportation, environmental, and worker safety. Our deep knowledge of federal and state agencies is built on a strong foundation of more than 100 editors and consultants and 70+ years of regulatory compliance experience.

Mark Johannsen

Mark Johannsen, CPA

Board Member, J. J. Keller & Associates, Inc. Board


Mark joined the J. J. Keller Board of Directors in 2018 after retiring as a partner with the CPA firm Grant Thornton LLP. Mark’s focus as a CPA was in corporate taxation and providing long-term planning advice to clients’ management and their board of directors. He is a graduate of Bradley University. Mark has served on numerous nonprofit boards, including as Chairman of the Board of the Community Foundation for the Fox Valley Region, Inc. and as President of the Board of the Bay-Lakes Boy Scout Council, both in Wisconsin.

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