925.930.6600 | Walnut Creek
jtonsing@archernorris.com

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Education

  • University of California, Hastings College of the Law, J.D., 1983
  • St. Mary's College of California, B.A., with honors, 1980

Admissions

  • State Bar of California
  • U.S. District Court, Northern, Eastern and Central Districts of California
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Supreme Court
  • U.S. Court of Federal Claims
  • U.S. Tax Court

Memberships

  • Association of Defense Counsel of Northern California and Nevada
  • Contra Costa County Bar Association, Real Estate, Business Law and Corporate Counsel, and Employment Law Sections

Practices

Jon P. Tonsing

Partner

With a primary focus on civil litigation, Jon Tonsing provides quality representation in a variety of business, real estate, commercial, contract, professional liability, and employment related matters.

Valued Advisor to California Business Community

He has represented Bay Area financial institutions, contractors, developers, public entities, employers, real estate and insurance agents and brokers, tax professionals, investors and entrepreneurs. He advises them in both litigation and in the preparation of contracts, partnership agreements, and real estate documentation.

Committed to Dispute Resolution and Defending Business Clients

Since his admission to the California State Bar in 1983, Jon’s practice has centered on civil litigation and administrative proceedings, with substantial experience representing clients in real estate, business, and construction litigation and transactions. He also has substantial experience with malpractice defense, civil appeals, and employment issues. 

Recent News and Articles

Press Releases

05.01.08 Archer Norris Wins Appellate Victory

Articles

04.03.09 Settling the Law on Wage and Hour Settlements