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Erin Webster O'Brien

Erin Webster O'Brien

also known as Erin Webster O'Sullivan

Practice areas:

Divorce & Separation, Mediation, Family

Practice Areas

Licensed since 2004

  1. Divorce & Separation: 50%
    6 years
  2. Mediation: 30%
    6 years
  3. Family: 20%


Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

14 total 

  • Marlene E. Siedlarz

    I endorse this lawyer.


    Marlene Siedlarz Family Attorney
    Relationship: Fellow lawyer in community

  • Eric Gerard Zelazny

    I endorse this lawyer.


    Eric Zelazny Chapter 7 Bankruptcy Attorney
    Relationship: Fellow lawyer in community

Contact Info

Erin Webster O'Brien, P.C.

56 North Chicago Street
Joliet, IL, 60432



ILActive And Authorized To Practice Law200408/17/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
Top 40 Lawyer Under 40 in Family LawThe American Society of Legal Advocates2015
Professional of the Year Representing the Family Law IndustryCambridge Who's Who2010
Professional Certification in Divorce Mediation Skills TrainingSchool of Continuing Studies at Northwestern University2008
ArbitratorWill County Mandatory Arbitration Program2007

Work Experience

TitleCompany NameDuration
OwnerErin Webster O'Brien, P.C.2015 - Present
OwnerErin Webster O'Sullivan, P.C.2008 - 2015
Mock Trial CoachLewis University2007 - 2008
Associate AttorneyChuck Bretz & Associates, P.C.2004 - 2008
Law ClerkChuck Bretz & Associates, P.C.2003 - 2004
Legal AnalystNational Anti-Vivisection Society2001 - 2002


Association NamePosition NameDuration
Will County Bar AssociationDirector2011 - Present
Premiere International Who's Who Registry of Executives and ProfessionalsMember2010 - Present
Rotary Club of JolietMember2009 - Present
Cambridge Who's Who Registry of Executives, Professionals, and EntrepreneursMember2009 - Present
Will County Women's Bar AssociationMember2009 - Present
National Association of Professional WomenMember2008 - 2010
International Academy of Collaborative ProfessionalsMember2008 - Present
Collaborative Law Institute of IllinoisFellow2008 - Present
American Association for JusticeMember2007 - Present
Will County Bar AssociationMember2004 - Present
Delta Epsilon Sigma, National Catholic Honor SocietyMember1999 - Present
Phi Alpha Theta, National History Honors SocietyMember1999 - Present


School NameMajorDegreeGraduated
DePaul University College of LawN/AJuris Doctor2004
Lewis UniversityCriminal / Social Justice & American StudiesBachelor of Arts2000