Our Firm

Costanzo Law Firm, APC

The Costanzo Law Firm, APC offers a superb record of experience and success in trial and litigation on behalf of clients. With over 25 years of experience in both state and federal venues throughout the Bay Area, Costanzo Law Firm, APC specializes in all aspects of employment claims including discrimination, retaliation and wrongful termination. In addition to the firm’s strong employment practice, Costanzo Law Firm, APC provides a well-established practice of litigating business cases involving unfair competition, breach of contract, fraud and interference with prospective business advantage.

Clients of the firm receive sophisticated advice on how to avoid potential litigation. If litigation ensues, Ms. Costanzo and her team are aggressive and determined advocates with the experience and skills necessary to achieve the positive outcome their clients.

Costanzo Law Firm, APC believes in being active participants in the legal community and work to promote the education and training of new lawyers through Law schools in mock trial judging, mentorships, local bar association activities and more.

Lori J. Costanzo

Costanzo Law Firm, APCLori J. Costanzo started Costanzo Law Firm, APC in 2011 after practicing law in the Bay Area for over 30 years. Her firm currently engages in general civil litigation with an emphasis in employment law. Ms. Costanzo routinely represents employees in all industries, including high tech companies regarding all areas of employment, including federal and state antidiscrimination statutes, executive compensation, severance agreements, disability discrimination including failure to engage and/or accommodate an employee, employment agreements, employment policies and procedures, employee investigations, retaliation of all kinds, Equal Pay Act, Family and Medical Leave Act, and Older Workers’ Benefits Protection Act.

Having practiced 15 years of insurance defense litigation Ms. Costanzo brings a unique perspective to her firm experienced in managing a successful defense practice where she developed invaluable trial skills. Ms. Costanzo has been a member of the Santa Clara County Bar Association- Women Lawyer’s Executive Committee since 2010, has Co-Chaired WLS and has Co-chaired the annual Lean-In Conference from 2014 to the present; she is also a member of the Labor and Employment Executive Committee, and ADR Executive Committee. Ms. Costanzo was appointed to the Commission on Equal Access and Employment Opportunity for Satan Clara County. Ms. Costanzo has also devoted time to the Santa Clara County Bar Association’s Board of Trustees, the SCCBA Executive Committee, and for the court’s small claims, traffic court, and settlement conferences. Ms. Costanzo is also a member of the Santa Clara County Trial Lawyers Association. She has been a longtime member California Employment Lawyer’s Association (CELA), and Consumer Attorneys of California (CAOC); in addition to the American Bar Association and National Employment Lawyer’s Association.

Adriana C. Moore, Of Counsel

Ms. Moore is a practicing civil attorney and certified mediator with over 20 years of experience in litigation, identifying, evaluating and resolving conflict for individuals, private companies and small businesses. Her broad range of litigation and negotiation experience in business, corporate, real estate, construction, employment and family matters have resulted in her successfully assessing and resolving a variety of claims and disputes.

Ms. Moore started her legal career at Littler, later becoming managing partner of her law firm McCloskey, Hubbard, Ebert & Moore, LLP. She is active in various organizations in the Bay Area, served on several Boards and provides volunteer services for several Courts and non-profits. Ms. Moore has worked with prominent firms in the Bay Area, and was the founding partner of two general practice firms. She credits her ability to successfully work with a broad range of cases and temperaments to her having experience as a Judge Pro Tem and her training with Peacemakers. She is a skilled communicator helping parties navigate through complex issues while facilitating productive and respectful communications. She provides insightful and creative resolution strategies unique to each situation with successful results.

Ms. Moore received her B.A., with honors, from Washington University in St. Louis, Missouri and her J.D. from the University of Texas School of Law in Austin, Texas. Ms. Moore is fluent in Spanish.

Chelsea Hill, Associate

Ms. Hill is a graduate from Santa Clara University School of Law. She earned her B.S. in Entomology a semester early from Purdue University and was the recipient of the Austin Frishman Scholarship.

While in law school, Ms. Hill developed an interest and appreciation for mediation. She was a mediator for the Small Claims Court, handing cases through resolution. In addition, Ms. Hill interned with a retired court commissioner and assisted him in numerous mediations.

Ms. Hill was a Student Associate for the Entrepreneurs’ Law Clinic and had the opportunity to help small startups grow their businesses. She was also a mentor for Women in Law while at Santa Clara University and is a member of the Santa Clara Bar Association and Civil Practice Committee at the SCCBA, as well as the Barristers and Women Lawyers sections.

While studying for the bar exam, Ms. Hill began painting in her spare time and continues to enjoy it as a hobby. Additionally, she enjoys going for walks and spending time with her family.

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Recent Posts



  • Dear Costanzo Law Firm, APC: Recently my significant other suffered an extreme form of abuse by her employer which ended in her being unfairly… [ Read More ]

  • I have to say that my experience with The Costanzo Law firm has been stellar. From the very beginning the attorneys there were attentive… [ Read More ]

  • I would highly recommend Lori Costanzo. Lori took on our discrimination/wage/wrongful termination case after our other attorney passed away. She and her team dove… [ Read More ]

  • Lori is the consummate professional. She is dedicated to her craft and to producing the best outcome possible for her clients. I would not… [ Read More ]

  • Lori is a fantastic attorney and results orientated. She is tenatious and understands the law. Lori always returns her phone calls and keeps on… [ Read More ]

  • I endorse this lawyer. Ms. Costanzo gives clear precise advice to AVVO readers, the exact steps and procedures that they must utilize to address… [ Read More ]

  • I endorse this lawyer. Lori is a fabulous attorney. She is smart, dedicated, efficient and hard working. Lori knows when it's best to mediate… [ Read More ]

  • Ms. Costanzo is a zealous advocate, and her skill and experience serve her clients well. She is a professional in every sense of the… [ Read More ]

  • I am a civil litigation attorney who has worked with Lori Costanzo on several occasions. Lori is not only a highly competent lawyer, but… [ Read More ]