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Williams Kastner Associate

Sydney L. Haller

Sydney L. HallerAssociate
Bar Admissions



U.S. District Court
Western Washington


Sydney L. Haller


Sydney Haller is an Associate in the Seattle office. She is a member of the firm’s Asbestos, Business & Commercial Litigation, Labor & Employment, Product Liability & Mass Torts, Construction Defect, Premises Liability, and Litigation practice groups.

Sydney worked full time while attending law school, where she was celebrated for her accomplishments on the Law Review (eventually serving as its Symposium Editor); on the Trial Team (winning the regional competition and advancing to nationals); as a devout community volunteer; and for graduating at the top of her class.

Before law school, Sydney worked for the State of Oregon in social services where she was responsible for ensuring the safety of children in foster care. She also worked for the State of Arkansas in its Disability Determination Department. These experiences have provided her with a solid foundational knowledge of various administrative processes and the medical industry.

Since obtaining her J.D., she has practiced law in Arkansas, Washington, and Oregon, and assisted with large-scale litigation oversight for national clients.  Sydney has experience as both plaintiff and defense counsel, and has successfully handled matters as small as uncontested adoptions and as large as multi-million dollar product liability actions. Sydney is known for her zealous representation of clients and her “outside the box” thinking.


  • Washington Defense Trial Lawyers
  • DRI

Recognitions & Awards

  • Successfully obtained summary judgment for franchisor defendants in a multi-million dollar toxic tort case (Arkansas)
  • Successfully precluded plaintiff from bringing punitive damages claims against client in employer discrimination action (Oregon – pro hac)


University of Arkansas, Little Rock, William H. Bowen School of Law, J.D., Magna Cum Laude, 2015

Portland State University, B.A. Psychology, 2007