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About me

I graduated from George Mason University School of Law in 1988.  At age twenty-four, I began practicing law as an associate with a general practice firm, handling the firm's workers' compensation claims.  In 1992, I established my own practice, dedicated primarily to helping injured workers and their families.  During my first ten years of practice I also served as a court appointed criminal defense attorney and guardian ad litem for children and incapacitated adults.  Thereafter my practice was limited exclusively to workers' compensation.


Languages spoken: Spanish, French

Practice areas


  1. Workers Compensation: 100%
    27 years



Contingent (15-25%)

Payment types:

Cash, Check

Attorney endorsements

5 total 

Are you an attorney? Endorse this lawyer

  • Carl Nyden Lauer

    Diane is a zealous advocate for injured workers in the Manassas area. She is a regular contributor to the Virginia Trial Lawyers Worker's compensation list serve and her article on Permanent and Total Disability claims helped me to prevail on a large claim/ settlement.


    Carl Lauer Workers compensation Attorney
    Relationship: Fellow lawyer in community

  • Charles Joseph Michael Candiano

    I endorse this lawyer. Diane possesses that rare combination of technical knowledge and compassion for the human condition which uniquely qualifies her as an advocate of injured workers. I urge anyone pursuing a Workers' Compensation claim in her locale to seek her advice and counsel.


    Charles Candiano Workers compensation Attorney
    Relationship: Other

Contact info

8713 Plantation Lane
Manassas, VA, 20110


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Peer Review RatedMartindale-Hubbell2012
Peer Review RatedMartindale-Hubbell2011
Peer Review RatedMartindale-Hubbell2010
Peer Review RatedMartindale-Hubbell2009
Peer Review RatedMartindale-Hubbell2008
Peer Review RatedMartindale-Hubbell2007
Peer Review RatedMartindale-Hubbell2006
Peer Review RatedMartindale-Hubbell2005
Peer Review RatedMartindale-Hubbell2004
Peer Review RatedMartindale-Hubbell2003
Peer Review RatedMartindale-Hubbell2002
Peer Review RatedMartindale-Hubbell2001
Peer Review RatedMartindale-Hubbell2000
Peer Review RatedMartindale-Hubbell1999
First Place, Nathan Burkan Memorial CompetitionAmerican Society of Composers, Authors and Publishers1988
Award for Excellence in Insurance LawAmerican Jurisprudence1988
Award for Excellence in Consumer Protection LawAmerican Jurisprudence1987
Work experience
TitleCompany nameDuration
AttorneyLaw Office of Diane C.H. McNamara1992 - Present
Associate AttorneyFarmer, Curran & Whittington1989 - 1992
Association namePosition nameDuration
Work Injury Law GroupMember2009 - Present
Virginia Trial Lawyers AssociationMember2001 - Present
Virginia Trial Lawyers, Workers' Compensation SectionMember2001 - Present
United States District CourtAdmitted to Practice1990 - Present
Virginia State BarMember1989 - Present
Prince William County Bar AssociationMember1989 - Present
United States Court of AppealsAdmitted to Practice1989 - Present
Manassas Battlefield KiwanisPast President1995 - 2002
Legal cases
Case nameOutcome
Simms v. Ruby Tuesday, Inc., Supreme Court Record No. 091762 (January 13, 2011)Innocent victims of horseplay on the job may recover in Virginia.
Mottram v. Fairfax County Fire & Rescue, 263 Va. 365, 559 S.E.2d 698 (2002)Post Traumatic Stress Disorder recognized as an occupational disease in Virginia for the first time.
Apple Construction Corp. v. Sexton, 44 Va. App. 458, 605 S.E.2d 351 (2004)Employer cannot compel injured worker who moved to Florida to choose from a panel of physicians in Florida.
See all legal cases 
Publication nameTitleDate
AvvoWhat Do You Do When You are Hurt at Work?2011
AvvoHow Much Will My Weekly Check Be?2011
AvvoWhere's My Check?2011
The Entertainment and Sports Lawyer, ABA Forum on the Entertainment and Sports IndustriesPreserving the Creator's Right of Authorship to Works Made for Hire1989
School nameMajorDegreeGraduated
George Mason University School of LawLawJD - Juris Doctor1988
Randolph-Macon Woman's CollegeEconomics and French, Double MajorBA - Bachelor of Arts1985
Speaking engagements
Conference nameTitleDate
Virginia Workers Compensation Commission SeminarRule 1.4 Employer's Application for Hearing2005
Fall Fiesta 3Permanent Total Disability: The Exception to the Rules2001