JasonW.
Kearnaghan

PartnerCo-Leader, Labor and Employment Practice Group
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Jason Kearnaghan

Overview

Jason Kearnaghan, co-leader of the firm's Labor and Employment practice group, is an experienced trial attorney who represents employers in state and federal courts in all phases of labor and employment litigation. His practice covers a wide range of disputes, including wrongful termination, discrimination, harassment, retaliation and whistleblower claims. A substantial portion of his work focuses on defending employers in complex wage and hour class, collective and representative actions.

Advising clients on labor-management relations is also central to Jason’s practice. He represents employers in union organizing campaigns, collective bargaining negotiations, elections and grievance arbitrations, and provides comprehensive guidance in defending against unfair labor practice charges.

Jason regularly appears before state and federal administrative agencies, including the National Labor Relations Board, the U.S. Department of Labor, the Equal Employment Opportunity Commission and the California Civil Rights Department.

Before joining Sheppard, Jason practiced business litigation in the healthcare industry, handling contractual disputes and managed care liability matters for Fortune 500 healthcare service providers and subsidiaries. Earlier in his career, he served as a trial attorney in the U.S. Navy Judge Advocate General’s Corps, where he prosecuted criminal cases.

Credentials
Education

J.D., University of San Diego School of Law, 1999

B.A., University of California, Santa Barbara, 1995

Admissions

California

Minnesota

U.S. Supreme Court

U.S. District Court, Central, Eastern, Northern and Southern Districts of California

U.S. Court of Appeals, District of Columbia

Honors
  • Recommended Lawyer, Labor & Employment, Legal 500 US, 2025
  • Southern California Rising Star, Super Lawyers, 2013
Legal 500 Recommended Lawyer 2025
Thought Leadership
  • "Wage and Hour Laws Seminar," Castle Publications, March 14, 2023
  • CalCPA Pasadena, CA Chapter, February 3, 2020
  • "Key 2018-19 NLRB Rulings and Reversals Impacting Non-Union and Union Employers," Strafford Webinar, December 3, 2019
  • CCWC’s 17th Annual Conference: Legislative & Educational Forum, July 17, 2019
  • PIHRA Pasadena Mid-Year Legal Update, October 9, 2018
  • "Unions and Right-To-Work Employment Post-Janus Decision: Implications for Public and Private Employers," Strafford Webinar, September 18, 2018
  • PIHRA Pasadena Mid-Year Legal Update, October 10, 2017
  • "Key 2016 NLRB Rulings Impacting Non-Union and Union Employers: Avoiding Pitfalls in an Evolving Legal Environment," March 9, 2017
  • PIHRA Pasadena Mid-Year Legal Update, October 11, 2016
  • National Association of Healthcare Recruitment Conference, Las Vegas, Nevada, July 14, 2016
  • PIHRA Pasadena Mid-Year Legal Update, March 8, 2016
  • ALIS Law Conference, Los Angeles, California, January 26, 2016
  • PIHRA Pasadena Mid-Year Legal Update, November 10, 2015
  • PIHRA Pasadena Mid-Year Legal Update, April 14, 2015
  • PIHRA Pasadena Mid-Year Legal Update, November 11, 2014
  • PIHRA Pasadena Mid-Year Legal Update, April 8, 2014
  • PIHRA Pasadena Mid-Year Legal Update, November 12, 2013
  • PIHRA Pasadena Mid-Year Legal Update, May 14, 2013
  • PIHRA Pasadena Mid-Year Legal Update, November 13, 2012
  • PIHRA Pasadena Mid-Year Legal Update, February 14, 2012
  • PIHRA Pasadena Mid-Year Legal Update, July 12, 2011
  • PIHRA Pasadena Mid-Year Legal Update, August 10, 2010