Marcelo A. Dieguez

Attorney Profile

Top Rated Employment & Labor Attorney in Irvine, CA

Diefer Law Group, P.C.
 | 2030 Main Street, Suite 1356
Irvine, CA 92614
Phone: 888-703-4573
Fax: 949-260-9132
Selected To Super Lawyers: 2021
Selected To Rising Stars: 2013 - 2016
Licensed Since: 2002
Practice Areas:
  • Employment & Labor: Employee
Languages Spoken:
  • English,
  • Spanish
  • Free Consultation
Attorney Profile

As a partner with Diefer Law Group, P.C., in Irvine, California, Marcelo A. Dieguez serves clients throughout Orange County. He focuses his law practice on employment law, with a particular interest in cases involving sexual harassment, unlawful discrimination and wrongful termination. He also represents clients who have claims under the Family and Medical Leave Act and the Americans with Disabilities Act.

Mr. Dieguez was an honors graduate of the University of California, Santa Barbara, and earned his law degree from Loyola Law School at Loyola Marymount University in Los Angeles, graduating in 2002. During law school, he served for Honorable Paul Boland in Los Angeles Superior Court and subsequently at the California Courts of Appeal.

In addition to his law practice, Mr. Dieguez is active in several professional organizations, including the California Employment Lawyers Association, the American Bar Association, the Orange County Bar Association and the State Bar of California's Labor and Employment Law Section.

Mr. Dieguez has written many articles about such employment law matters as workplace sexual harassment, unlawful actions in job interviews and alternative dispute resolution methods for employment-related disputes. He has also presented lectures and seminars for professional organizations.

His accomplishments have earned Mr. Dieguez honors and recognition in the legal profession. Mr. Dieguez has tried cases both in State and Federal Courts. 

The American Society of Legal Advocates named him to its list of the top labor and employment lawyers under age 40 in California. The attorney rating service Avvo gave him its Client's Choice Award in 2012 and 2013 in honor of his excellent reviews from clients. OC METRO Magazine named him to its list of top employment lawyers in 2014. Additionally, Mr. Dieguez has found himself on a number of awards lists including: The Client Distinction Award – Martindale-Hubbell, 2015, Top Attorneys – Orange Coast Magazine, 2015, Rising Star - Super Lawyers Magazine, 2013, 2014, 2015 and 2016, Top 100 Lawyers – The National Advocates, 2017, Client Champion Award (silver) – Martindale-Hubbell, 2018, The Client’s Choice Award – Avvo – 2018, Top 20 Lawyers in Workers' Compensation and Employment Law by The National Advocates in 2019, and Top Lawyer List by California Magazine in 2020. 

Practice Areas
  • 100%Employment & Labor: Employee
Focus Areas

Employment Law - Employee, Sexual Harassment


Selected to Super Lawyers for 1 yearsmiddle-imageSelected to Rising Stars for 4 years

Super Lawyers: 2021 Rising Stars: 2013 - 2016

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About Marcelo Dieguez

Admitted: 2002, California

Professional Webpage:


  • Top Lawyer List by California Magazine in 2020, Top Lawyer List, California Magazine, 2020
  • Top 100 Lawyers – The National Advocates, 2017
  • Top 20 Lawyers in Workers' Compensation and Employment Law by The National Advocates, Top 20 Lawyers in Workers' Compensation and Employment Law, The National Advocates, 2019
  • 2018 Client's Choice Award by AVVO, Client's Choice Award, AVVO, 2018
  • Client’s Choice Award – Avvo – 2018
  • Client Champion Award (silver) – Martindale-Hubbell, 2018
  • Rising Star - Super Lawyers Magazine, 2015,2016
  • Top Attorneys – Orange Coast Magazine, 2015
  • Client Distinction Award – Martindale-Hubbell, 2015
  • 2012 Client's Choice Award by AVVO
  • 2014, Top 40 Under 40 Labor And Employment Lawyer in California, American Society of Legal Advocates
  • Trial Advocacy First Honors Award
  • 2013 Rising Star Super Lawyers Magazine
  • 2001 Recipient by St. Thomas More Honor Society
  • 2013, Client's Choice Award by AVVO
  • 2013 Client Distinction Award by Martindale-Hubbell
  • Awarded to lawyers that have been evaluated on their service and relationships skillsanmd who have received Client Reviews with a numeric score of 4.0 - 5.0., Client Distinction Award, Martindale-Hubbell, 2015
  • 2001 Honor Board Scott Moot Court Honors Board

Bar/Professional Activity:

  • American Bar Association, Member, 2002 - present
  • State Bar of California-Labor and Employment Section, Member, 2002- present
  • Orange County Bar Association, Member, 2002 - present
  • California Employment Lawyers Association, Member, 2013 - present

Scholarly Lectures/Writings:

  • Main guest speaker on employment law changes for 2020, in particular in regards to AB5., Speaker, Guest Speaker, Janitorial, Small Businesses, Trucking, 2020
  • Main guest speaker in front of hundreds of business owners in regards to employment law and rights/obligations of employees and employer in the workplace., Main Guest Speaker, Main Guest Speaker, Janitorial, Manufacturing, Small Businesses, Trucking, 2019


  • Over $10,000,000.00 in verdicts/settlements between employment and worker's compensation cases., 2019

Educational Background:

  • University of California - Santa Barbara, BA - Bachelor of Arts, 1999

Industry Groups

  • California Employment Lawyers Association
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Office Location for Marcelo A. Dieguez

2030 Main Street
Suite 1356
Irvine, CA 92614

Phone: 888-703-4573

Fax: 949-260-9132

Marcelo A. Dieguez:

Last Updated: 3/30/2021

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