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Patrick W. Dennison

Partner


Pittsburgh

t:412.822.6627

f:412.774.6101

Email

Service Focus

  • Litigation and Trials
  • Mine Safety & Health
  • Workplace Safety and Catastrophe Management
  • Employers' Rapid Response Team for DHS Raids

Industry Focus

  • Energy

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  • COVID-19/Vaccine Resource Center
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Overview
Credentials
Recognitions
Affiliations
Insights

Overview

Patrick Dennison is a partner in the Pittsburgh office and a member of the Workplace Safety and Catastrophe Management Practice Group.  Patrick defends companies nationwide in various regulatory enforcement and compliance actions in federal, state, and administrative venues. Patrick’s experience is diverse, and he stays abreast of emerging legal developments.  Whether counseling clients regarding Mine Safety and Health Administration (MSHA) and Occupational Safety and Health Administration (OSHA) compliance or helping businesses navigate complex and novel legal issues such as vaccinations or cryptocurrencies and blockchain technologies, Patrick remains thorough and responsive, which he values as a core tenant of service to clients.

Patrick’s experience is vast, having represented employers during serious and fatal accident investigations and in litigation involving claims of discrimination and wrongful termination. In addition, he litigates cases throughout the country in proceedings before administrative law judges and in matters ranging from pre-trial discovery up through appeals to the United States Courts of Appeal.  Patrick has appeared in over twenty cases before United States Courts of Appeals, including the Third, Fourth, Sixth, Seventh, Eighth, Ninth, Tenth, Eleventh, and D.C. Circuits.

Patrick’s experience and knowledge base are reflected in his public speaking events.  Patrick regularly provides presentations and training to various companies and associations on workplace safety, regulatory compliance, vaccinations, drug testing, HIPAA, ADA, and emerging employment legislation.  He has also authored or co-authored numerous articles on these and other equally complex legal topics.

Patrick has been selected as one of Pennsylvania’s Super Lawyers - "Rising Stars" since 2015. Patrick also guest lectures to doctoral-level classes at Indiana University of Pennsylvania’s Department of Safety Sciences.

Credentials

Education

  • J.D., 2009, Florida Coastal School of Law
  • B.A., 2003, magna cum laude, California University of Pennsylvania

Bar Admissions

  • Pennsylvania

Court Admissions

  • U.S. Court of Appeals for the District of Columbia Circuit
  • U.S. Court of Appeals for the Eighth Circuit
  • U.S. Court of Appeals for the Eleventh Circuit
  • U.S. Court of Appeals for the Fourth Circuit
  • U.S. Court of Appeals for the Seventh Circuit
  • U.S. Court of Appeals for the Sixth Circuit
  • U.S. Court of Appeals for the Tenth Circuit
  • U.S. Court of Appeals for the Third Circuit
  • U.S. District Court for the Middle District of Florida
  • U.S. District Court for the Western District of Pennsylvania

Recognitions

  • Listed to Pennsylvania Super Lawyers® Rising Star - Energy & Natural Resources Law since 2015

Affiliations

Professional Activities

  • Pennsylvania Coal Alliance
  • West Virginia Coal Association
  • National Lime Association
  • Pennsylvania Aggregates and Concrete Association

Community Activities

  • Leukemia & Lymphoma Society – Each year since 2009 when Patrick’s childhood best friend, Randy Frost, succumbed to Leukemia, Patrick has raised money for the Leukemia & Lymphoma Society in Randy’s name.
  • South Fayette School District Mini-THON – Donate and volunteer for the 12-hour dance marathon, held at South Fayette High School, modeled after Penn State’s THON, which promotes student-run philanthropy committed to enhancing the lives of children and families impacted by childhood cancer.
  • Volunteer Youth Folkstyle Wrestling Coach, South Fayette Takedown Club
  • Volunteer Youth/High School Freestyle & Greco-Roman Wrestling Coach, Dirty Horseshoe Wrestling Club

Insights

  • Insights

    03/11/25

    Frequently Asked Questions for Employers About OSHA (Updated for 2025)

    Patrick W. Dennison, J. Micah Dickie, Nicholas S. Hulse, Todd B. Logsdon, Travis Vance, Kristin R.B. White

    Read more 

  • Insights

    12/10/24

    OSHA Inspectors to Use AI-Driven Smart Glasses to Inspect Workplaces: What Employers Should Do to Protect Privacy Rights

    Patrick W. Dennison

    Read more 

  • News

    09/17/24

    Republished Insight: Frequently Asked Questions for Employers About the Occupational Safety and Health Administration

    Patrick W. Dennison, J. Micah Dickie, Nicholas S. Hulse, Todd B. Logsdon, Travis Vance, Kristin R.B. White

    Read more 

  • Insights

    02/14/24

    Frequently Asked Questions for Employers About OSHA (Updated for 2024)

    Patrick W. Dennison, J. Micah Dickie, Nicholas S. Hulse, Todd B. Logsdon, Travis Vance, Kristin R.B. White

    Read more 

  • Event

    10/20/22

    Pittsburgh CLE Series – OSHA UPDATE: Heat Stress, Recordkeeping, Enhanced Enforcement and More An Employer’s Guide to Workplace Safety & Health Post-Pandemic

    Patrick W. Dennison

    Read more 

  • Insights

    09/06/22

    The Top 16 Workplace Law Stories from August 2022

    Rebecca Hause-Schultz, Sarah Wieselthier, Cheryl L. Behymer, Sheila M. Abron, Tatiana S. Chiu, Angelica M. Ochoa, Steven M. Bernstein, Alex G. Desrosiers, John M. Polson, Richard R. Meneghello, Adam F. Sloustcher, Kathleen McLeod Caminiti, Courtney Leyes, Marilyn Higdon, Myra K. Creighton, R. Bryan Holbrook, Patrick W. Dennison, Aymara Ledezma, Samantha J. Monsees, Benjamin M. Ebbink, Alden J. Parker, Darcey M. Groden, Anthony Isola, Usama Kahf

    Read more 

  • Insights

    08/12/22

    The 10 Most Common Employer Questions After the CDC Loosens its COVID-19 Guidance

    Patrick W. Dennison, Samantha J. Monsees

    Read more 

  • News

    08/09/22

    Pittsburgh Partner Discusses Growing Concern for Monkeypox Discrimination and Harassment in the Workplace

    Patrick W. Dennison

    Read more 

  • News

    08/09/22

    Pittsburgh Partner Discusses How Employers Can Prepare for Threat of Monkeypox

    Patrick W. Dennison

    Read more 

  • Insights

    08/03/22

    Monkeypox: What, If Anything, Should Employers Do?

    Patrick W. Dennison, Aymara Ledezma

    Read more 

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