Jill started her mediation career in 2010 while litigating at Irell & Manella. She was asked to be part of the firm's Alternative Dispute Center where she was selected as a co-arbitrator, mediator, co-mediator, and special master on complex matters. Prior to that, she was a civil litigator handling all types of matters in state and federal courts.
Since joining Judicate West in 2014, with her combined experience, Jill has mediated over 1,500 cases including wrongful death, employment, insurance coverage, intellectual property, business, environmental, employment, consumer class action, antitrust, banking, and securities, from single plaintiff to class actions involving hundreds of parties many times on a national and global level.
Jill’s depth of experience, intelligence, and impressive skills are just a few reasons why she has earned a coveted spot on many law firms' list of ‘go to’ mediators. Thoroughly prepared for every matter, she also has a unique, pragmatic style and is known for creating out-of-the-box strategies to resolve cases where the parties never thought the settlement was possible. An East Coast native, she is known for her straightforward, no-nonsense demeanor, relentless work ethic, and a "velvet hammer" touch.
Below is a sampling of the various matters Jill R. Sperber, Esq. handled as a practicing attorney or neutral.
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Ms. Sperber enjoys spending time with her husband, two children, and an active dog, as well as running, biking, hiking, and baking. She is proficient in Spanish.
"We appreciated your incredible hard work on behalf of the parties. It was a pleasure working with you. "
- Attorney on a Business Torts Case
"Thanks for your efforts to bring this to a close. I was impressed by your effectiveness and perseverance."
- Attorney on an Employment Wage & Hour Class Action Case
"Thank you for your follow-up and hard work on this Jill. It is always refreshing when a mediator gets the job done when it's difficult. It wouldn’t have happened without you."
- Attorney on an Employment Wrongful Termination Case
"Jill is a ROCK STAR. She has a unique style of mediating which is refreshing and entertaining. We had a blast and got the case resolved!!!! Thanks so much for having her on the JW team."
- Attorney on a Business Partnership Dissolution Case
"Thank you so much for allowing me the time and the space to be seen and heard here today. My hope is that this may be the beginning of my journey toward healing. I cannot thank you enough for your compassion in this case, and for making me feel human today. What you do for women like me is give us hope. To move from hopelessness to feeling like there is a glimmer of hope for the first time in over a year is an incredible gift that you have given me."
- A Quote from a Party
"Jill is VERY effective."
- Attorney on a Product Liability Wrongful Death Case
"Jill, thanks for going the extra mile to get this done."
- Attorney on an Employment Prevailing Wage Case
"Jill settled an impossible case. She was masterful. I never thought this case would settle. The mediation was over two long days. She stayed late both days and worked relentlessly and tirelessly. She also worked over the weekend, calling and emailing lawyers and handling background details. Gigantic kudos to Jill!"
- Attorney on a Complex Business/Commercial Case
601 S. Figueroa
Ste 3400
Los Angeles, CA 90017
Phone: 213.223.1113
Fax : 213.223.1114
980 9th Street
Suite 2200
Sacramento, CA 95814
Phone: 916.394.8490
Fax : 916.394.8495
402 W. Broadway
Ste 2400
San Diego, CA 92101
Phone: 619.814.1966
Fax : 619.814.1967
1851 East First Street
Ste 1600
Santa Ana, CA 92705
Phone: 714.834.1340
Fax : 714.834.1344
1925 Century Park East
Suite 1700
Los Angeles, CA 90067
Phone: 800.488.8805
Fax :
2023.6.1.2rt