Rachel Costello

Attorney Rachel Costello

Rachel is an associate attorney at Harriman Law. She zealously represents clients who have been victimized in both personal injury and employment matters. She fights daily for clients who are victims of wage and hour violations, misclassified independent contractors, and victims of sexual assault and abuse. Rachel also advocates for people involved in motor vehicle accidents, slip and falls, dog bites, and all other personal injury claims. She is experienced in practicing before the Courts of Massachusetts, and prides herself on obtaining successful outcomes for her clients.

On multiple occasions, Rachel has obtained six-figure settlements for her clients. She represents clients in State and Federal Court, and before the Massachusetts Commission Against Discrimination (MCAD). Rachel joined Harriman Law as a Law Clerk in 2018, and became an associate attorney after passing the bar exam.

Rachel grew up in the Greater Boston Area.  She attended Boston University and received her degree in psychology in 2013. Rachel attended law school at Temple University Beasley School of Law in Philadelphia, and graduated in 2018. While in law school, Rachel was selected as a Student Author – and later Student Director – of the American Bar Association’s Third Circuit Media Alert Project. Rachel actively participated in extracurricular activities throughout law school and earned the Lena L. Hale Award for Outstanding Extracurricular Contributions at graduation.

Rachel is active in the Boston legal and business community. She is a member of the Boston Irish Business Association and volunteers with the New England chapter of the National MS Society. Rachel enjoys spending time on Cape Cod, and supports the New England Patriots with a passion rivaling that which she brings to her representation of her clients.


  • Boston University
  • Temple University Beasley School of Law

Bar Admissions

  • Massachusetts
  • The United States District Court for the
    District of Massachusetts

Professional Associations

    • Massachusetts Bar Association
  • Boston Irish Business Association