William A. Herreras

Abogado en la ley




  • Graduated from Loyola University of Los Angeles in 1963 with honors.
  • Graduated from Loyola Law School of Los Angeles in 1966 with honors.
  • Admitted to the California State Bar in 1967.
  • Since 1972 he has been certified as a Workers' Compensation Specialist by the Board of Legal Certification of the State Bar of California.
  • Mr. Herreras has practiced on the Central Coast of California since 1970 and has practiced in the Santa Maria and San Luis Obispo area since 1975 representing disabled working men and women who have sustained industrial disabilities or injuries.
  • Co-Chair of the Amicus Committee for the California Applicants’ Attorneys Association (CAAA) since 1992 and continuing.
  • Past-President of California Applicants’ Attorneys Association 2000 – 2001.
  • Active member and lecturer of the Mexican-American Bar Association.
  • Lecturer before State Bar, defense and applicant legal associations.


Mr. Herreras has appeared on numerous occasions before the California Supreme Court, the State Courts of Appeal, and en banc decisions of the Workers’ Compensation Appeals Board (WCAB). Some cases before the Supreme Court are Rhiner vs. WCAB (1993) 4 Cal 4th 1213 and City of Moorpark vs. Superior Court (1998) 18 Cal 4th 1143. Cases before the Court of Appeal include Maples vs. WCAB (1980) 111CA3d 827 Vasquez vs. WCAB (1991) 226 CA3d 867. And the en banc WCAB cases are Costa vs. Hardy Diagnostic (2006) 71 CCC 1797, Costa II (2007) 72 CCC 1492.


Finally, Mr. Herreras is an editorial consultant for LEXIS NEXIS, California Compensation cases.

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709 E. Grand Avenue

Arroyo Grande, CA 93420


 Mail: P.O. Box 1668

Arroyo Grande, CA 93421

(805)473-8550 | FAX (805)473-8583


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