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James Yunhao Wu

About me

I have practiced employment/HR law for nearly 20 years at some of the country's largest and prominent law firms.  I counsel and advise businesses about employment laws and HR issues.  I have expertise in areas including discrimination, harassment, retaliation, wrongful termination, leaves of absence, disability issues, wage and hour, overtime, meal and rest breaks, CA and Federal labor and employment laws, and social media and employment law. 

I also handle claims in various state and federal administrative agencies and courts, including the CA Department of Fair Employment and Housing, the U.S. Equal Employment Opportunity Commission, the CA Labor Commissioner's Office, and state and federal courts.

Additionally, I prepare and review various agreements, including severance, release, employment, independent contractor, and non-disclosure.  In addition, I review and draft employee handbooks, policies and procedures for compliance with local, state, and federal requirements.

Testimonials or endorsements here do not constitute a guarantee, warranty, or prediction regarding the outcome of your legal matters.


Practice areas


  1. Employment: 100%
    20 years


Payment types:

Cash, Check

Attorney endorsements

3 total 

Are you an attorney? Endorse this lawyer

  • Beth Wolf Mora

    I endorse this lawyer for his knowledge of labor and employment law issues, informative articles as well as dedication to his clients.


    Beth Mora Employment and labor Attorney
    Relationship: Fellow lawyer in community

  • Elva Doris Harding

    James is an expert in the field of employment law who provides strong advocacy and practical advice. I endorse him in the field of employment and labor law without hesitation.


    Elva Harding Real estate Attorney
    Relationship: Fellow lawyer in community

Contact info

Wu Castillo, P.C.

3100 Oak Road
Suite 100
Walnut Creek, CA, 94597


ILVoluntarily Inactive199605/17/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
PartnerLewis Brisbois Bisgaard & Smith2010 - 2012
Senior AssociateMiller Law Group2009 - 2010
AssociateLittler Mendelson2003 - 2008
Association namePosition nameDuration
Northern California Employment RoundtablePresident2014 - Present
Contra Costa County Bar AssociationMember, Board of Directors2012 - Present
Contra Costa County Bar Association, Employment SectionPresident and Member, Board of DirectorsN/A
California Minority Counsel ProgramMemberN/A
Publication nameTitleDate
Contra Costa LawyerEgg-Freezing: It Is Truly An Employee Benefit?2015
Maximize Social BusinessThe Biggest Social Media Risk for Employers2014
Maximize Social BusinessFormer Employee Sanctioned For Deleting Posts on Facebook2014
Maximize Social BusinessSocial Media and Workplace Romances2014
Maximize Social BusinessThe U.S. EEOC Turns Its Attention To Social Media in the Workplace2014
Maximize Social BusinessUS Supreme Court Impacts Social Media and Employment Law2014
Maximize Social Business5 Employment Law Considerations For Employee Advocacy2014
Maximize Social BusinessEmployers Will Not "Like" This!2014
Maximize Social BusinessCell Phone Expenses: Next Wave of Employee Class Action Lawsuit?2014
Contra Costa LawyerInside: It's About People2014
Maximize Social BusinessWorkplace Woes During Weather Worries2014
Maximize Social BusinessAllegations of LinkedIn Violating the Fair Credit Reporting Act2014
Maximize Social BusinessEmployer vs. Employee: Post-Employment LinkedIn Contact Ownership2014
Maximize Social BusinessCan "Social Media" and "Confidentiality" Co-exist in the Workplace2014
Maximize Social Business4 Tips for Employers to Prepare for the New NLRB2013
Maximize Social BusinessEmployee Was Properly Facebook Fired2013
Contra Costa LawyerCo-Guest Editor of Employment Law Issue2013
Maximize Social BusinessSocial Media in the Workplace: 5 Reasons to Not Friend Co-Workers2013
Maximize Social Business5 Tips on Job Transitions and Social Media Profiles2013
Maximize Social BusinessSocial Media in the Workplace: 6 Tips Regarding Non-Solicitation Agreements2013
Maximize Social BusinessSocial Media and Employment Law: Lessons About Forking and Big Dongle Jokes2013
Maximize Social BusinessSocial Media and Employment Law: March Madness (and Yahoo!/Telecommuting) Causes Craziness in the Workplace2013
Maximize Social BusinessSocial Media in the Workplace: Hoaxes, Lies and a President's Unconstitutional Behavior2013
Maximize Social Business6 Social Media New Year Resolutions for Employees and Employers2013
Maximize Social BusinessNew Password Protection Laws in the Workplace2013
Maximize Social BusinessWorkplace BYOD Policy: One Size Does Not Fit All2013
Maximize Social BusinessBeware A New Way Employers and Employees Could Be Liable For Texting On The Job2013
Contra Costa LawyerADR Resources for Employment Claims2012
Bloomberg BNANew for 2013: Significant Enforcement Changes To California's FEHA2012
Contra Costa LawyerSex, Love and Payroll: Employers Face Tricky Issues With Workplace Romances2012
Contra Costa LawyerWhy Your Status Updates May Come Back To Haunt You2012
School nameMajorDegreeGraduated
Boston College Law SchoolLawJD - Juris Doctor1996
Stanford Law SchoolEducationMA - Masters1993
Stanford UniversityN/ABA - Bachelor of Arts1992
Speaking engagements
Conference nameTitleDate
Contra Costa County Bar Association, Employment Section2014 Employment Law Update2014
Human Resources Non-Profit Professionals Ne2013 Employment Law Update2013
Contra Costa County Bar AssociationBring Your Own Device2013
Contra Costa County Bar AssociationInvesting in the Future with Diversity2013
Contra Costa County Bar AssociationEmployment Law Update2013
Human Resources Non-Profit Professionals NetworkSocial Media: What HR Needs to Know2012
Contra Costa County Bar AssociationLitigation Tools For Solos2012
California Employer Advisory CouncilWage & Hour Law: Hot Topics From Hiring to Termination2012
San Francisco Employment Law SeminarCivil Rights Challenge with DFEH Director Phyllis Cheng2011
California State Compensation Fund Employer Education SeriesThe Economic Crisis: Handling Reductions in Force and Terminations Without Getting Sued2009