Jon A. Dieringer

(951) 294-5200

Jon believes in keeping a strong focus on preventive law; developing policies and practices to avoid costly disputes, and litigating only when required. Since the beginning of his law career in 1992, Jon has successfully litigated cases from intake through appeals, including discovery and depositions, law and motion, jury trials and bench trials, and he has successfully reversed trial judgments on appeal. He has advised and represented parties in litigation throughout the southland, including courts in Orange County, Riverside and San Bernardino Counties, Los Angeles County, San Diego County, and Ventura County.  

Jon represents both plaintiffs and employers in claims of discrimination and harassment, leave violations, wage and overtime violations, wrongful termination and myriad additional employment-related claims. In addition to employment law, Jon advises and represents clients on selective disputes ranging from business and contract disputes to real estate litigation matters. He is a certified mediator and periodically volunteers his time to mediate and resolve lawsuits filed with the court. Jon also volunteers his time through the National Ski Patrol in the local Southern California mountains, a service he has enjoyed doing since 1999.

Bar Admissions

• California, 1992


Juris Doctor, 1992

B.A., Political Science, 1986


Recent Blog Posts


  • I sincerely want to thank Jon

    I sincerely want to thank Jon Dieringer for taking the time to relay in detail realistic expectations regarding our employee situation.  We will certainly continue to use Dieringer Law Group in the future for all our legal advice.
  • Very professional and knowledgeable

    Jon represented our firm in an employment matter and did a great job. Very professional and knowledgeable of labor law. Always easy to communicate with. A great attorney to have on your side when you need it!
  • Very professional and personable

    Jon was referred to me by my business attorney to get advice on employee disputes which at the time I was struggling to handle while simultaneously running my business. He was very professional and personable. He quickly understood what I was going through and gave me advise on how to deal with m...
  • Jon is a highly skilled attorney

    Jon is a highly skilled attorney who is very knowledgeable on the law, and applying it to your unique situation.  Jon listens to your concerns, and works with you to formulate a plan to win your case.  Jon is extremely effective, and an excellent strategist.  In my opinion - as a client - his man...
  • I HIGHLY RECOMMEND their law firm

    I am the office manager for a local attorney in Murrieta CA. Upon receipt of an unpleasant letter from an attorney, I contacted Jon Dieringer for advice. Dieringer Law Group represented me in a dispute with an employee, Jon and Rebecca Dieringer gave me advice and were always available to answer ...
  • Demonstrated strong knowledge

    I have worked with Jon for over a decade, primarily with my clients. In all instances he has demonstrated strong knowledge in the labor and employment field. Jon has a wide-range of experience one would expect from a top-notch attorney. His credentials are solid. My clients concluded they were we...
  • I have referred clients to him

    I represented a former employee and he represented the former employer. He began his representation after another attorney substituted out. He had a difficult client, but the case settled for a reasonable amount for both sides. I have referred clients to him.
  • Provide excellent advice

    I've referred clients to Jon Dieringer with confidence. My experience is that he will evaluate the client's situation promptly, provide excellent advice, and assist the client to efficiently resolve the employment matter.
  • The HIGHEST ethics

    Attorney Dieringer has the highest ethics of any attorney I have come into contact with. Attorney Dieringer has a very high work ethic. Attorney Dieringer has great trial advocacy skills.
  • Takes his client's interests to heart

    Mr. Dieringer is a well-versed but practical attorney who takes his client's interests to heart.
  • An excellent lawyer and a quality person

    I have known Jon for a long time and have had many opportunities to observe his work.  I mediated several cases for him and got to observe both his legal work and his demeanor.   He is an excellent lawyer and a quality person.   He is of the highest caliber.
  • Fantastic and hard working

    A fantastic and hard working gentlemen attorney. He can be trusted to do an excellent job on a client's case. Highly recommend for superior results.
  • A great job

    Jon represented our company in a wrongful termination action and did a great job.
  • True professional, cares deeply about clients

    I have had the pleasure of working with Jon on several employment litigation matters. Jon is bright, thorough, and has an expansive knowledge of employment law. Jon is a true professional and cares deeply about his clients. I would recommend him first for any employment law matter.
  • Provided Excellent Legal Services to Refute ALL Claims

    Dieringer Law Group provided effective and thorough legal services and support over the last year that succeeded in prevailing against unsubstantiated claims against our corporation in both California and federal agency claims. Due to Dieringer Law Group's effective presentation of facts that ref...

“Far and away the best prize that life offers is the chance to work hard at work worth doing.”


Don't Let One Disgruntled Employee Ruin Your Day Business!

Contact Dieringer Law Group Today!

(951) 294-5200