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Jaime Anne O'Brien

Family Attorney at Morris Plains, NJ

5.0   6 reviews

also known as Jaime A. O'Brien

  • Licensed for 37 years
    State NJ
    Acquired 1986
    Active No misconduct found

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

About Jaime

Learn Jaime’s areas of practice.

Jaime A. O’Brien has been a practicing attorney for more than twenty years. After several years of combining civil litigation and family law, Ms. O’Brien chose to focus her practice entirely in family law. Ms. O’Brien joined her present firm in 2007 and became a partner in 2009. Simon O’Brien & Knapp has received a designation in Family Law as one of the “Best Law Firms in America” by U.S. News and World Report for the past three years.

Ms. O’Brien is a graduate of Fordham University, where she received a B.A. degree and the Distinguished Graduate Award in Social Sciences. She attended Rutgers University School of Law in Newark, N.J. Ms. O’Brien served as an editor of the Rutgers Law Review, and graduated in 1986, receiving the Class of 1986 Award for Legal Writing. Following graduation, Ms. O’Brien served as Law Clerk to the Honorable Florence R. Peskoe, Superior Court of New Jersey.

Ms. O’Brien is a past President of the Summit Bar Association. She is a member of the Family Law Section of the New Jersey State Bar Association and the Morris County Bar Association. She serves as a panelist for the Family Law Early Settlement Panel Program in Morris County and is a certified Family Law Mediator. Ms. O’Brien is also trained as a collaborative divorce attorney and is a member of the New Jersey Collaborative Law Group.

Ms. O’Brien has in depth experience in all aspects of family law, including divorce litigation, trials and appeals, mediation, collaborative divorce, custody, parenting time and visitation, spousal support, child support, division of property, allocation of college expenses, parental relocation, civil unions and prenuptial agreements. Ms. O’Brien is committed to working closely with clients to achieve positive and practical solutions in their family law matters.


Simon, O'Brien and Knapp, P.C.
555 Speedwell Ave
Morris Plains, NJ, 07950

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5.0 / 5.0
  6 customer reviews
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Posted by anonymous | October 13, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Great Family Attorney
This is the first attorney that has been very busy, yet very compassionate in winning cases! Fair pricing and immediate actions!
Posted by Jessie | May 23, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Choice for a Divorce Lawyer
Jaime was my lawyer during a very drawn out separation and divorce. Throughout the entire process, she made herself available to me for anything I needed and always made me feel as if my emotions were justified - it was very important to me that we all understood although this was a judicial proceeding, that we remembered our humanity. She excels at her profession and is intelligent and a force to be reckoned with. I am definitely glad she was on MY side, and I am certain that anyone else choosing to use Jaime will agree.
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Posted by Alex | May 22, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Kind, calm, great advocate. Very helpful.
During a very contentious request for alimony Termination due to my retirement, Jaime was in total control of all aspects. She was calm, knowledgeable and very reassuring. It was one of my best decisions, having Jaime O’Obrien as my lawyer. I would highly recommend her to anyone in need of superior legal council.
Posted by Thomas | May 21, 2020
This review is from a person who hired this attorney.
| Hired Attorney
An Honest, Professional and Excellent Attorney
Choosing an attorney can be easy. Choosing the right attorney is not. Jaime O'Brien represented me in my complicated divorce that involved splitting assets, 3 dependent children and alimony. Not only did she clearly explain the process, she also informed me of what I could expect along the way. These were not easy conversations to have, and her sensitivity to that was incredibly helpful. At the same time, she did not sugarcoat anything-I sincerely appreciated that. She was successful in negotiating a settlement that was best for all parties, and she did that without having to go to trial. The bonus in all of this great work was that Jaime's billable hours were more than fair. In fact, I could not have found a better value. I had the "opportunity" to call on Jaime's services again a few years later. My ex had decided to quietly live with her significant other, while continuing to collect alimony. Naturally, this went against the agreed upon terms of our divorce. However, proving this allegation is virtually impossible, but Jaime put together a very strategic outline of what was needed in order to offer proof to a judge. To this day, I still do not understand how she accomplished the "impossible." Generally speaking, I did not like lawyers; however, there is nothing to dislike about Jaime O'Brien. She has proven time and again that she can get the job done effectively, efficiently and with minimal stress.......I wouldn't dare trust any important matter to another attorney.
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Posted by Karen | March 16, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Calm, cool and collected lawyer
Jaime O'Brien provided legal counsel to me for my fairly complicated divorce. At the outset, she guided me through a collaborative process in which my ex and I tried to work with a mediator to come to an agreement in order to avoid having the court make the important decisions for us. When my ex decided he did not want to mediate, Jaime represented me in direct negotiations with my ex and his lawyer. She walked me through each step and provided counsel about the different considerations, helping me understand the law and whether there was any legal precedent or how a judge might view each element of my situation as I considered the difficult decisions that needed to be made. She also noted the times when it would be difficult to predict what a judge might decide, since there are rules but not a lot of precedent. My situation was complicated and Jaime helped me figure out how to resolve an unusual alimony and child support arrangement. In addition, my ex's lawyer was a bit aggressive and Jaime held her own and worked very professionally with opposing counsel. Jaime's office and staff were also very supportive, professional and prompt and provided excellent services. I felt that I was in good hands with a seasoned divorce lawyer who was always calm and reasonable and “in my corner.”
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Posted by Susan | February 14, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Blessed with an Excellent Attorney
Ms. O'Brien was extremely helpful in helping to settle a case involving my adult mentally handicapped son as a result of a very nasty divorce. She made sure that she would do everything she could to work toward the best situation for me and my son. She kept me informed, always returned calls and/or e-mails, never sugar-coated anything, but at the same time, was never mean. Ms. O'Brien was patient with me, a hysterical Southern woman worried about her boy. We had moved from NJ to Tennesse after my divorce, and even though I couldn't be there to see it, I am sure there must have been a lot of eye-rolling coming from her Morristown, NJ office! I will never forget the day I got the email from her saying "we won", and I will be eternally grateful to her for the work she put into this. Ms O'Brien was so easy to work with, I would recommend her to anyone, even if the results had not been what I had wanted.
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AVVO RATING 8.9 (Excellent)

Work Experience

  • Partner
  • Simon & O'Brien, PC
  • 2009 - Present
  • Of Counsel
  • Simon & Enright PC
  • 2007 - 2009
  • Associate; Of Counsel
  • Bourne Noll & Kenyon
  • 1990 - 2007
  • Associate Attorney
  • Young Rose & Millspaugh
  • 1987 - 1990
  • Law Clerk, Hon. Frances R. Peskoe
  • Superior Court Of New Jersey
  • 1986 - 1987
View all work experience


  • Rutgers, State University of New Jersey School of Law - Newark
  • JD - Juris Doctor
  • 1986
  • Fordham University
  • BA
  • 1980


  • NJ Collaborative Law Group
  • Attorney Member
  • 2009 - Present
  • International Academy of Collaborative Professionals
  • Attorney Member
  • 2009 - Present
  • Morris County Bar Association
  • 2007 - Present
  • New Jersey State Bar Association
  • 1990 - Present
  • Union County Bar Association
  • 1990 - Present
  • Summit Bar Association
  • Past President
  • 1998 - 1999
  • Summit Bar Association
  • 1990 - 2007
View all associations

Languages Spoken

  • English

Honors and Awards

  • Peer Review Rated
  • Martindale-Hubbell
  • 2020
  • Distinguished
  • Martindale-Hubbell
  • 2017
  • Legal Writing Award
  • Rutgers University School of Law
  • 1986
  • Editor, Rutgers Law Review
  • Rutgers University School of Law
  • 1984
  • Distinguised Graduate Award in Social Sciences
  • Fordham University, Department of Social Sciences
  • 1980
View all awards

Attorney endorsements

Received (3)
Given (2)
Endorse Jaime
Divorce and separation Attorney | Apr 07
Relationship: Opposing Counsel on matter
"I endorse this lawyer. Great lawyer and Great Person."
Family Attorney | Apr 27
Relationship: Fellow lawyer in community
"Jaime is a staunch advocate; a creative yet practical problem-solver who is singularly devoted to the interests of her clients. She maintains the highest standard of ethics, professionalism and competence."
Divorce and separation Attorney | Feb 24
Relationship: Fellow lawyer in community
"I endorse this lawyer. Jaime is an excellent family law attorney. She is a member with me in the New Jersey Collaborative Law Group and attends all the advance training seminars to keep up to date on collaborative law. I would not hesitate to recommend a person to her for a collaborative divorce."

Avvo Contributions

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Morris Plains Family Lawyer Jaime Anne O'Brien
Jaime Anne O'Brien
Family Attorney
Morris Plains, NJ
Licensed for 37 years