Jonas Trevethan

4.5 (39 reviews )

Irvine California United States

Labor and Employment Law - Management Litigation - Labor and Employment

Recognized in Ones to Watch since 2026

714-641-5100 Website

About Jonas

Jonas Trevethan is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law - Management and Litigation - Labor and Employment.Jonas, who practices law in Irvine, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jonas is held by other top lawyers in the same geographic and legal practice area.

Jonas Trevethan is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law - Management and Litigation - Labor and Employment.

Jonas, who practices law in Irvine, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jonas is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Labor and Employment Law - Management

Litigation - Labor and Employment

Education

University of California Irvine

Awards & Recognition

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Reviews

4.5 / 5

39 Reviews

1,049 Profile Views

Cindy Baumbach-Nolan

Feb 05, 2026

The absolute best in Irvine for Labor and Employment Law - Management - and I mean that from the bottom of my heart

I didn't think I'd find such a good lawyer in California, but here we are and I am thoroughly impressed. Jonas Trevethan is just awesome and exceeded all my expectations. No complaints at all! They re...

Judy Beahan

Feb 05, 2026

Five stars for the incredible team at Jonas Trevethan in Irvine - they are amazing

Really glad I found Jonas Trevethan for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in C...

Joann Braun

Feb 05, 2026

Reliable lawyer you can count on - Jonas Trevethan provided excellent service throughout

I appreciate how Jonas Trevethan handled my case. No fluff, just straight to the point and very effective representation for my Labor and Employment Law - Management matter. They are obviously very ex...

Nelson Thiel

Feb 05, 2026

Many thanks to Jonas Trevethan for the hard work and dedication to my legal matter

Best lawyer for Labor and Employment Law - Management in Irvine. Period. I've seen others, but Jonas Trevethan is on another level. They truly care about their clients and work hard to get the best re...

Julio Kuphal

Feb 05, 2026

So glad I called Jonas Trevethan to handle my Labor and Employment Law - Management case in Irvine

Just wanted to say a huge thanks to Jonas Trevethan and the staff. They really went above and beyond for me and my family during a very difficult legal battle. We couldn't have done it without their c...