John M. Losinger


Florham Park

T 973-232-0606

Over the past ten years, John "Jack" Losinger’s practice has developed to include a wide range of civil litigation matters, including those arising from employment matters, contractual and estate disputes, and environmental cost recovery actions.  

Jack regularly defends and counsels employers in connection with claims of discrimination, harassment, and hostile work environment.  He has extensive experience conducting comprehensive investigations of a variety of sensitive matters for institutions of higher education and private sector employers, including allegations of inappropriate conduct in the workplace, ethical violations, conflicts of interest, policy violations, and bullying. 

Additionally, Jack advises clients in connection with contractual and estate disputes, including those arising from employment agreements, shareholder agreements, consumer contracts, wills and trusts.  By making a concerted effort to understand the strengths and weaknesses of his clients’ position, he has had success negotiating favorable pre-suit resolutions and, when necessary, litigating these types of disputes.  Jack’s clients have included individuals, small companies, and publicly traded corporations.  

Jack also has experience handling toxic tort and environmental matters, including contribution claims under the New Jersey Spill Act and CERCLA.

Listed In: New Jersey Super Lawyers® - Rising Stars - 2015-2020

Rated by Super Lawyers
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Member of the New Jersey State Bar Association, Young Lawyers’ Division and Civil Litigation Division.

  • Represented employers, both pre-suit and in litigation, in connection with claims for hostile work environment, discrimination, and wrongful termination.

  • Following a bench trial, procured a judgment for money damages in favor of a multinational IT and networking company, on the basis that a customer breached a UCC Finance Lease Agreement.

  • Successfully resolved probate litigation on behalf of the executor of an estate arising from a dispute as to the validity of a handwritten codicil to the decedent’s will.

  • Successfully moved to preliminarily dismiss portions of a Complaint filed against a construction company, and, shortly thereafter, negotiated the voluntary withdrawal of the lawsuit.

  • Obtained partial summary judgment on behalf of owners of real property in a lawsuit arising from a tenant’s breach of a commercial lease agreement.

  • Filed, pursued, and successfully resolved lawsuits against insurance carriers arising from underpayments following Super Storm Sandy.

  • Represented families in connection with the appointment of guardians of the person and estate of incapacitated individuals.

  • Obtained reductions in tax assessments for property owners in matters pending before the County Boards of Taxation and the Tax Court of New Jersey.

  • Successfully represented property owners in landlord-tenant court, by either evicting delinquent tenants, or reaching resolutions through which tenants make payments for back rent owed.

  • Represented colleges, universities, private schools, and business entities to conduct in-depth investigations into allegations of, among other things, hostile work environment, inappropriate sexual conduct, discrimination, and hazing.