The leader in workers’ compensation defense law.

Counseling employers and insurance carriers throughout California.

Career Basics

David Key started with Mullen & Filippi in January of 2021, working out of the San Jose office. His legal career commenced with work as an associate attorney with a small litigation law firm in Mountain View. Thereafter, he worked for 13 years as a house counsel with Fireman's Fund in their San Jose offices, handling civil litigation and ultimately workers’ compensation claims. David's career in workers’ compensation took him to the applicant side for 4 years with Poel and Foster in San Jose. His return to the defense bar occurred in 2007 while working for Laughlin, Falbo until December 2020.


David received his undergraduate degree from the University of California, Berkeley. He then returned to his home town of Lincoln, Nebraska to go to law school at the University of Nebraska - Lincoln where he received his JD. In 2002, he obtained a Master of Law from Santa Clara Law School in Intellectual property (LLM-IP).

Professional Membership

David is a member in good standing with the California State Bar Association.

Personal Note

In high school, my girlfriend (now my wife) and I discussed what we would like to do for our professional careers. A number of people I admired were lawyers and we agreed I should head in that direction. The more I learned about the practice of law, the more excited I became. In the summer between my second and third year of law school, I had a legal clerkship for Kaiser Aluminum and Chemical Corporation in Oakland, CA. At that time, Kaiser was bringing their litigation in house – it was then I decided to do courtroom litigation. During my years as a litigator, I have done both general civil litigation and workers’ compensation administrative law. I am particularly proud of my work in the case of Wright vs Beverly Fabrics (2002) 95 Cal. App. 4th 346, 115 Cal Rptr 2d 503, 67 Cal. Comp. Cases 51. This is a case that was a hybrid of civil and workers' compensation issues. An employee was at her place of employment on her day off work and was injured when she assisted coworkers to hold up the collapsing shelf containing store merchandise. The California Court of Appeal held that workers' compensation was the exclusive remedy for an injury that arose out of and in the course of her employment, regardless of whether the applicant was on the clock or not.

My wife Susan and I have been married for 41 years. We raised three children in Northern California. The oldest two are married and live nearby with our grandchildren - all of whom we get to see regularly (outside with masks). I have been a Hi-Fi enthusiast and a voracious reader since I was a teenager - and those hobbies have shown no signs of waning over the years.