Atty. John P. Mueller

Atty. John P. Mueller

John is a member of the Professional Liability Department where he focuses his practice on employment law including counseling employers in preventing and defending against whistleblower claims, wrongful termination, sexual harassment, discrimination, and retaliation claims, as well as advising employers on individual and group termination decisions, leaves of absence, accommodating disabilities, workplace privacy, and employment agreements. Additionally, John provides guidance to employers regarding trade secret and restrictive covenant issues and litigates related claims in Federal and State

Mount Laurel Mount Laurel 22 yrs experience 22 year
Call (856) 414-6026 Book Appointment

Profile Summary

About John P. Mueller at a glance

John P. Mueller is a Shareholder based in Mount Laurel, New Jersey, practicing at Marshall Dennehey. They have 22+ years of legal experience, licensed to practice since 2004. Their practice focuses on employment. Admitted to practice in New Jersey (2004), U.S. District Court of New Jersey (2004), Pennsylvania (2004), and U.S. District Court Eastern District of Pennsylvania (2004). Educated at Rutgers University School of Law, Camden, NJ (J.D., 2004) and University of Pennsylvania (B.A., 1996). Active member of Associations & memberships PennPAC Volunteer Consultant. Serands clients in Mount Laurel, NJ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John is a member of the Professional Liability Department where he focuses his practice on employment law including counseling employers in preventing and defending against whistleblower claims, wrongful termination, sexual harassment, discrimination, and retaliation claims, as well as advising employers on individual and group termination decisions, leaves of absence, accommodating disabilities, workplace privacy, and employment agreements
  • Additionally, John provides guidance to employers regarding trade secret and restrictive covenant issues and litigates related claims in Federal and State courts
  • John most recently was a name partner in a regional law firm focused on employment and commercial litigation matters
  • Since 2004, John has represented and advised corporations as outside counsel at the nation's top law firms and served as General Counsel at a mid-sized manufacturing company based in Southern New Jersey
  • As a litigator, he has tried more than ten cases to verdict over his career
  • John brings a deep understanding and sensitivity to the daily challenges and cost considerations companies face
  • Accordingly, in his role as advisor and advocate, he functions as a virtual extension of clients’ in-house legal and human resources teams, working in integrated partnership with them to protect the company's best interests and bottom line
  • John is a proud graduate of Milton Hershey School (MHS), a private philanthropic boarding school in Hershey, Pennsylvania, established in 1909 for financially impoverished children
  • After eight years at MHS, he attended the University of Pennsylvania on a Navy ROTC scholarship and walked-on the NCAA Division I Crew Team, making the Varsity boat
  • After graduation, John served as an Infantry Officer in the United States Marine Corps and was honorably discharged at the rank of Captain after five years of service, including deployments to Japan and the Middle East
  • Classes/Seminars Taught •“What Employers Need to Know About the Legalization of Recreational Cannabis,” Hunterdon County Chamber of Commerce, April 2021 Pro Bono •Civil Pro Bono Panel for the District of New Jersey Community Service •Program Director, Cherry Hill Girls Travel Basketball League (2017-present) •Soccer Coach, Cherry Hill Travel Soccer Club (2015-2024) Results Obtained a “No Cause” Verdict in an Employment Case in New Jersey We recently obtained a “no cause” verdict in an employment case in the Superior Court of New Jersey
  • The plaintiff, an employee of a New Jersey State entity, asserted violations of the Contentious Employee Protection Act (CEPA)
  • According to the plaintiff, after reporting purported deficiencies with an environmental permit, he was subject to a retaliatory and hostile work environment
  • We successfully argued that the plaintiff did not articulate a violation of law or public policy, nor did he prove that the various employment actions he received created a hostile work environment or were even caused by the alleged whistleblowing
  • Summary Judgment Obtained in Breach of Contract Case We secured summary judgment on behalf of a custom-home builder in a breach of contract case
  • The plaintiffs contracted with our client to build their dream home, but, due to the plaintiffs’ change of scope and the increase of costs and services, an attempt was made to modify the parties’ contract
  • The plaintiff objected and submitted the dispute to the parties’ chosen arbitrator for a binding decision
  • The arbitrator fully sided with the builder
  • however, the plaintiffs moved before the Superior Court of New Jersey to have the arbitration award vacated
  • Once vacated, we proceeded in the civil action and convinced the court that there were no triable issues of fact to support the plaintiffs' breach of contract action
  • News Employment Law Attorney John P. Mueller Joins Marshall Dennehey as a Shareholder in Mount Laurel April 24, 2024

Practice Areas Explained

John P. Mueller's Areas of Practice

Each practice area below reflects the types of cases John P. Mueller handles, with a brief overview of what that area of law covers.

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

John P. Mueller is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in New Jersey →

Jurisdictional Context

Why local counsel matters in New Jersey

Practicing law in New Jersey. Legal matters in New Jersey are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Mount Laurel are typically filed in the local municipal court or the appropriate New Jersey state district court, depending on subject matter and amount in controversy. An attorney licensed in New Jersey brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New Jersey courts without local counsel or pro hac vice admission.

Looking for additional New Jersey attorneys? Browse all attorneys in Mount Laurel or all attorneys in New Jersey.

Frequently Asked

Common questions about John P. Mueller

Where is John P. Mueller's law office located?
John P. Mueller's law practice is located in Mount Laurel, New Jersey. The firm is Marshall Dennehey. You can contact the office directly through this profile page.
What practice areas does John P. Mueller handle?
John P. Mueller focuses on employment. Each practice area listed reflects experience handling cases of that type in New Jersey.
How long has John P. Mueller practiced law?
John P. Mueller has 22+ years of legal experience and has been licensed since 2004.
Where did John P. Mueller go to law school?
John P. Mueller earned their education at (J.D., 2004); (B.A., 1996).
How can I contact John P. Mueller for a consultation?
You can contact John P. Mueller directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Practice Areas

Education

J.D.
Rutgers University School of Law, Camden, NJ
- 2004
B.A.
University of Pennsylvania
- 1996

Bar Admissions

New Jersey
Admitted: 2004
U.S. District Court of New Jersey
Admitted: 2004
Pennsylvania
Admitted: 2004
U.S. District Court Eastern District of Pennsylvania
Admitted: 2004
U.S. District Court Western District of Pennsylvania
Admitted: 2004
New York
Admitted: 2013

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