Erin M. Wintersteen

Managing Partner

Sacramento Office

tel: +1 916 978 5860

fax: +1 844 910 1850


Ms. Wintersteen, Managing Partner, is a bar-certified Specialist in Workers’ Compensation Law. In addition to managing the caseloads and work-product of other attorneys, she represents insurance carriers, self-insured employers and public entities in all aspects of workers’ compensation. Before becoming a partner, she was Managing Attorney for the firm’s Sacramento office.

Ms. Wintersteen is a member of the Executive Committee of the Workers’ Compensation Section, California Lawyers Association (CLA). Formerly, she served as a board member and president of the Valley Industrial Claims Association, which provides continuing education opportunities for the Sacramento workers’ compensation community. Ms. Wintersteen recently was featured in Sacramento Magazine as one of the city’s top workers’ compensation attorneys.

Before joining Michael Sullivan & Associates, Ms. Wintersteen was Partner and Chief Marketing Officer with Adelson, Testan, Brundo, Novell & Jimenez in Sacramento, where she was responsible for client-attorney relations for the firm’s Northern California region. She also carried a full caseload of workers’ compensation defense files, with particular expertise in Labor Code 132a and serious and willful claims. Before becoming a partner, Ms. Wintersteen was an associate attorney with the firm.

Ms. Wintersteen received her Juris Doctor degree cum laude from the University of the Pacific McGeorge School of Law in Sacramento, where she was on the Dean’s List, and was a member of the Traynor Honor Society and the American Constitution Society. She was a Witkin Award winner, and served as a Research Assistant for a Legal Process class. She was also a Certified Legal Research Assistant for the County Public Defender’s felony division. Ms. Wintersteen received her undergraduate degree from the University of California, Davis, where she was on the Dean’s List.

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