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 20 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 law, including federal and state antidiscrimination statutes, executive compensation, severance agreements, collective bargaining, employment agreements, employment policies and procedures, employee investigations, workers’ compensation retaliation, National Labor Relations Act, Fair Labor Standards Act, 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 having managed 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-Chair 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.  She was recently elected to the Santa Clara County Bar Association’s Board of Trustees and appointed to the SCCBA’s Executive Committee.  Ms. Costanzo is also a member of the Santa Clara County Trial Lawyer’s 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.

Lynn R. Toma

San Jose Employment LawyersMs. Lynn R. Toma has been a commanding presence in the civil litigation sector since her admission to the State Bar of California in 1981. Lynn graduated from Santa Clara University School of Law in 1981, where she was a member of the Phi Kappa Beta Honor Society and an Emery Scholarship recipient. Lynn’s career since her graduation and admission the State Bar has personified her passion for the pursuit of equity and a drive to make her clients whole, no matter how daunting the opposition. The first eleven years of her career were devoted to a Plaintiff’s personal injury practice, where she worked firsthand on a variety of cases such as medical malpractice, product liability and peculiar risk of harm. She has litigated cases against defendants as varied as the US Government, General Motors, PG&E, and hundreds of other companies and individuals.

Since 1992, Lynn expanded her practice to the entirety of the civil litigation field, representing both Plaintiffs and Defendants. In this later phase of her career, she has handled complex civil litigation, contract disputes, business torts, fraud, will and trust contests, legal malpractice and financial elder abuse litigation.

Lynn is a zealous advocate, and prides herself on finding creative legal solutions for her clients as an alternative to trial. She excels at legal research and writing, and is a skilled negotiator. She has drafted thousands of winning motions and briefs and negotiated the settlement of hundreds of cases. Her interpersonal skills have enabled her to communicate effectively with clients, as well as opposing counsel, in order to bring about the successful resolution of her cases.
A proud holder of the Public Interest Law Certification, Lynn is truly a staple of the legal community in Santa Clara County. After years of serving her community through her practice with the Deckard Law Firm, she continues her work in the sector of civil litigation upon joining the Costanzo Law Firm in 2017.

Andrea Justo, Associate

San Jose Employment AttorneyAndrea Justo earned her BS in Political Science and English with an emphasis in Pre-Law from Santa Clara University in 2007.

After graduating, she worked at the Law Office of Reg J. Lormon, assisting with civil litigation in business, real estate, and personal injury, as well as commercial leases and estate planning.

During her seven year tenure, Andrea received her J.D. from Lincoln Law School of San Jose in 2015. She was valedictorian of her class, Editor-in-Chief of the Lincoln Law Review, and President of the Student Bar Association. Andrea attained academic excellence awards in Torts, Business Organizations, and Remedies. She also received the Patricia A. Grossman Memorial Award for outstanding skills in Legal Research and Writing, the Nancy Biagini and James F. Boccardo Memorial Scholarships.

In her spare time, Andrea likes to go to concerts, sporting events, and the movies.

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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 ]