Occupational Health Management, PLLC

Industrial Hygiene Consulting & Expert Witness Services Nationwide

Nancy M. McClellan, M.P.H., CIH, CHMM – CEO, Principal Expert and Consultant

[email protected]

Serving Michigan, Local Clients, and Nationwide Industries

At Occupational Health Management, PLLC, we specialize in providing comprehensive occupational health consulting, industrial hygiene services, and expert witness support. Led by Nancy M. McClellan, M.P.H., CIH, CHMM, a nationally recognized expert with over 25 years of experience, our firm is trusted by corporations, government entities, legal teams, and healthcare organizations nationwide.

Whether you need support for chemical exposure assessments, OSHA compliance, or expert testimony for litigation, we provide tailored solutions that protect your workforce and ensure regulatory compliance.

An occupational health management expert witness

Why Choose Occupational Health Management, PLLC?

When it comes to workplace health and safety, you need an industry leader with global experience. Nancy M. McClellan has spent decades leading health and safety programs for major corporations, including AbbVie and LafargeHolcim, and now offers her unparalleled expertise to organizations across the U.S.

Proven Leadership & Expertise

Over 25 Years of Experience in occupational health and industrial hygiene.

Trusted Advisor & Consultant to top corporations, including pharmaceutical, automotive, defense, and healthcare sectors.

Internationally Recognized Expert and a Distinguished Lecturer for the AIHA.

Comprehensive Services

Expert Witness & Litigation Support — Clear, precise, and effective testimony for legal cases.

Industrial Hygiene Audits — Risk assessment, exposure analysis, and compliance evaluations.

OSHA Compliance Consulting — Stay ahead of OSHA regulations and protect your workforce.

Local & Nationwide Reach

Headquartered in Michigan but proudly serving clients nationwide.

Available to support clients locally, across the U.S., and internationally.

Our Core Services — Industrial Hygiene, Consulting, & Expert Witness Support

At Occupational Health Management, PLLC, we offer a wide range of services designed to help companies protect workers, achieve compliance, and reduce liability. Our proven methods ensure measurable improvements in workplace health and safety.

1. Industrial Hygiene Consulting

Protecting your workforce starts with a comprehensive approach to industrial hygiene.

Services include:

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Exposure Risk Assessment & Management

Identifying, evaluating, and controlling chemical, physical, and biological exposure.

Chemical Exposure Modeling

Using scientific modeling to predict airborne and surface contaminant exposures.

Biohazard Management

Implementing infectious disease controls for health care, education, aviation, laboratory, and production facilities.

OSHA Compliance Audits

Ensuring full compliance with OSHA regulations.

2. Expert Witness Services

With years of experience as an expert witness, Nancy McClellan provides case support, deposition testimony, and litigation consulting for occupational health-related legal cases.

Services include:

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Expert Testimony

Trusted by attorneys to provide clear, concise, and defensible opinions and expert testimony.

Deposition Support

Clear case review, analysis, and insight into occupational health issues.

OSHA Violation Disputes

Support for companies navigating OSHA investigations or disputes.

3. Health & Safety Training

A strong workforce starts with well-trained employees. Our training programs focus on hazard recognition, leadership development, and regulatory compliance.

Services include:

An image of some health and safety training services

Executive Health & Safety Leadership Training

Training leaders on safety strategies and regulatory compliance.

Change Management & Risk Communication

Helping organizations communicate change clearly and effectively.

Employee Safety Training

Teaching employees to identify, reduce, and eliminate hazards.

Ready to Protect Your Workforce with Proven Expertise?

When it comes to occupational health, you deserve a trusted leader with global experience and local service. Occupational Health Management, PLLC offers clients in Michigan, nationwide, and beyond the guidance they need to keep their workforce safe and their business in compliance.

Occupational Health Management, PLLC — Your Partner in Industrial Hygiene, Safety, and Compliance.

Industries We Serve Locally & Nationwide

With more than 25 years of experience, we’ve partnered with companies in some of the most hazardous and highly regulated industries in Michigan and across the U.S. Our nationwide reach ensures every industry receives the expert support it needs.

Here’s a look at the industries we serve:

Pharmaceuticals

Protecting workers exposed to highly potent active pharmaceutical ingredients (HPAPIs).

Healthcare & Hospitals

Managing biohazard risks, infection control, and pandemic planning.

Automotive

Addressing exposure risks and supporting production facilities.

Construction

Managing site exposure hazards for workers and contractors.

Food & Beverage

Keeping employees safe from cross-contamination and chemical exposure.

Defense & Military

Supporting federal contractors with risk mitigation and exposure control.

Education & Facility Management

Protecting educators and staff in schools, universities, and offices.

More

If your industry requires expert occupational health support, we’re ready to provide it. Contact us to schedule a consultation.

Testimonials — What Clients Say About Nancy McClellan

Don’t just take our word for it. Here’s what clients, attorneys, and industry leaders have to say about working with Nancy McClellan and Occupational Health Management, PLLC:

“I had the pleasure of working with Nancy on litigation involving chemical inhalation and dermal exposure where she served as an expert witness. Nancy was always ready to respond to suggestions and flexible with her schedule. She offered valuable insights into defending our client. She can serve as an important expert on various issues in a range of litigations.”

— Greg Chernack, Attorney

“Nancy McClellan uniquely combines a strong moral compass, humility, kindness, and deep technical knowledge. Her leadership and team-building strengths are second to none. I wouldn’t hesitate to provide a strong character or professional reference for her.”

— Deborah Nelson, Past AIHA President

“Her demeanor is professional, polite, and warm. She has an extremely practical approach to addressing technical workplace hazard challenges and creates sustainable management programs. Her passion for teaching and sharing knowledge makes her a great mentor.”

— Carmen del Pilar Márquez, Trinchero EHS Manager

Awards & Recognitions

Nancy M. McClellan’s work has been recognized nationally and internationally. Her technical excellence, ethical leadership, and dedication to safety have earned her the following honors:

🏆 AIHA Distinguished Lecturer — Recognized for her role as an industry leader and educator.  Learn More.

🏆 Board Leadership & Service — Serving in leadership roles for AIHA, ABIH, and OHTA. Learn More.

🏆 Chair of COHSE Advisory Board — Shaping the future of occupational health education at the University of Michigan. Learn More.

Her dedication to excellence is reflected in the ongoing success of her consulting, training, and expert witness services.

Memberships & Leadership Roles

As a leader in industrial hygiene and occupational health, Nancy McClellan maintains memberships in industry-defining organizations.

Her roles include:

Vice President

American Industrial Hygiene Association (AIHA)

Chair

University of Michigan Graduate School of Public Health COHSE External Advisory Board

Member

American Conference of Governmental Industrial Hygienists (ACGIH)

Member

Institute for Hazardous Materials Management (IHMM)

Ready to Protect Your Workforce with Proven Expertise?

When it comes to occupational health, you deserve a trusted leader with global experience and local service. Occupational Health Management, PLLC offers clients in Michigan, nationwide, and beyond the guidance they need to keep their workforce safe and their business in compliance.

Occupational Health Management, PLLC — Your Partner in Industrial Hygiene, Safety, and Compliance.