DCWYB&E continues to closely monitor the dynamic situation of the COVID-19 pandemic. As a result we have chosen to work remotely for the safety of our staff and clientele in compliance with the CDC's and Governor Polis’ directives. Please know that we remain fully operational and continue to actively work on all matters.

Our Legal Team:

Sean O'Brien

Sean O'Brien


Denver, Colorado


Mr. O’Brien earned his B.A. in 2003 and his J.D. in 2008 from the University of Texas. He was an active member of the Texas International Law Journal, the American Constitution Society, the Environmental Law Clinic, and the EU Migration Law Moot Court while studying abroad. After receiving his J.D., Mr. O’Brien joined a highly successful plaintiffs’ firm in Houston, TX where he focused on class-action litigation, including a suit against FEMA on behalf of Hurricane Katrina evacuees and a suit alleging RICO violations. From 2010 to 2012, Mr. O’Brien pursued a technical degree to complement his legal skills. He earned an M.S. from the Colorado School of Mines and worked as an exploration geophysicist from 2012 to 2016 for Anadarko Petroleum. Mr. O’Brien resumed the practice of law in 2016 with a position defending a class-action lawsuit against the US Postal Service. Mr. O’Brien joined Dworkin, Chambers, Williams, York, Benson & Evans, P.C. in 2017 where his practice concentrates on employment, commercial, and insurance litigation. Mr. O’Brien is licensed in Colorado and Texas and is a member of the American Bar Association, Colorado Bar Association, and Denver Bar Association.

Areas of Practice

  • Employment Litigation
  • Commercial Litigation
  • Products Liability
  • Insurance Subrogation

Bar Admissions

  • Colorado, 2016
  • Texas, 2008


  • The University of Texas at Austin
    • J.D. — 2008
    • B.A. (Plan II Honors Program and Philosophy) — 2003
  • Colorado School of Mines 
    • M.S. (Geophysics) — 2012

Professional Associations and Memberships

  • American Bar Association, Member
  • Colorado Bar Association, Member
  • Denver Bar Association, Member
  • Society of Exploration Geophysicists, Member
  • Denver Geophysical Society, Member