When Supervisors Become Defendants: Lessons from U.S. v. Pearson
A San Diego Supervisor went to jail for dry removal.
Summary of U.S. v. Pearson (9th Cir. 2001)
A certified asbestos supervisor, was hired by Environmental Maintenance Service (EMS) to oversee asbestos removal at a U.S. Navy Plant. Although he was not the highest‑ranking individual on the project, witnesses testified that the certified asbestos supervisor exercised substantial control over daily asbestos‑abatement operations—conducting meetings, directing work practices, and instructing workers on water usage.
During the project, multiple violations of asbestos work‑practice standards were observed. Witnesses described insufficient wetting, dry asbestos debris “all over the place,” containment barriers pulled away from ceilings, clogged negative‑air machines, and asbestos‑contaminated bags outside containment. These conditions violated the Clean Air Act’s asbestos NESHAP requirements.
The supervisor argued on appeal that he lacked the authority necessary to be criminally liable. The Ninth Circuit rejected this argument, holding that a supervisor can be criminally liable under the Clean Air Act if they exercise a “substantial degree of control” over workers, even if they are not the top decision‑maker. The supervisor failed to show he was merely following orders. His conviction and 10‑month sentence were affirmed.
"A supervisor may be criminally liable… if he has a substantial degree of control over workers. Such control need not be ultimate or preeminent.” (U.S. v. Pearson, 2001) Cautionary Tale for Industrial Hygienists & Safety Professionals
Pearson’s case is a stark reminder that supervisory responsibility carries legal weight—even when authority is shared or limited.
This decision underscores several critical lessons for anyone involved in asbestos abatement, environmental remediation, or hazardous‑materials oversight:
1. Supervisory authority = legal accountability If you direct workers—even informally—you may be treated as a responsible supervisor under federal law. Learn more about supervisory liability
2. “I was just following orders” is not a defense Pearson argued he lacked ultimate authority. The court disagreed because he exercised day‑to‑day control. Explore limits of “following orders” defenses
3. Asbestos work‑practice violations are criminal, not just regulatory Dry removal, inadequate wetting, failed containment, and poor negative‑air management can trigger felony charges, not just citations. Review asbestos NESHAP requirements
4. Certification does not shield you— it increases expectations Pearson was hired because he was certified. His credentials heightened the court’s view of his responsibility.
5. Documentation and compliance culture matter Had Pearson insisted on proper wetting, containment integrity, and equipment maintenance—and documented his objections—his legal exposure might have been very different.
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