
“Kathryn is a leader in the industry.”
Kathryn M. McMahon is a Partner in Conn Maciel Carey’s Washington, DC office. She focuses her practice in the areas of occupational safety and health (OSHA) law and environmental law.
Kate is an experienced OSHA attorney, both in the regulatory and enforcement contexts. For more than two decades, she has provided compliance counseling under all major environmental statutes as well as representing clients in numerous Superfund contribution actions and PRP allocations, Department of Justice enforcement matters, and myriad other federal and state administrative actions.
Before joining CMC, Kate was an OSHA and Environmental Partner in the Washington, DC, offices of two large U.S.-based law firms. Before attending law school, Kate worked in the political arena, serving as a political assistant to Congressman Richard Gephardt, Senator Gary Hart, and Alabama Attorney General Charlie Graddick. She also served as Field Director of a political consulting firm.
Key Services
- Helps clients manage incident and fatality inspections and a wide array of enforcement-related matters.
- Represents industry stakeholders in all aspects of OSHA rulemaking, including proposed rules regarding silica, injury and illness recordkeeping, hexavalent chromium, and beryllium, among others.
- Counsels manufacturers on a broad range of OSHA regulatory compliance issues:
- GHS Hazard Communication
- Ergonomics
- Hazardous Waste Operations and Emergency Response (HAZWOPER)
- Process safety management
- Lock-out/tag-out
- Machine guarding
- Personal protective equipment
- Hearing conservation
- Injury and illness recordkeeping issues
- Assists clients in developing risk management and hazard assessment tools to identify and address workplace risks.
- Defends her clients in state and federal administrative litigation related to alleged violations.
- “Band 1” Ranked Attorney in Occupational Safety and Health, Chambers USA – Nationwide (2022 – Present)
Kate regularly speaks to audiences about a broad range of workplace safety issues. Recent invitations have included the following organizations and events:
- Battery Council International’s (BCI) Environmental Health & Safety Conference
- J.D., Cornell University Law School, 1992
- Co founder, The Cornell Journal of Law & Public Policy
- B.A., Syracuse University, 1988




