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Marissa A.
Mastroianni

Member |She/Her/Hers

Office 201.525.6223
Email mmastroianni@coleschotz.com
Maria Lopez |Legal Practice Assistant
201.489.3000 ext. x3003
mlopez@coleschotz.com
Maria Lopez |Legal Practice Assistant
201.489.3000 ext. x3003
mlopez@coleschotz.com
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Marissa combines deep expertise in employment law with a practical, creative approach to help clients solve workplace issues and handle employment litigation matters with confidence.

 

 

Experience

Known for her deep expertise in employment law compliance and employment litigation matters, Marissa serves as a trusted advisor to her clients. Marissa not only advises employers on navigating the constantly evolving employment law landscape, but she also provides practical guidance that integrates business operations considerations and risk management strategies.

In addition to participating in day-to-day discussions with clients regarding personnel decisions, employee leave and accommodation requests, and employee complaints, Marissa routinely prepares employee handbooks, policies, hiring protocols and packages, and workplace safety programs. On behalf of employers and, in some cases, high-level professionals and executives, she also regularly drafts and negotiates various types of agreements, including, employment agreements, separation agreements, confidentiality agreements, and restrictive covenant agreements. Marissa additionally conducts interactive discrimination, harassment, and engagement training for employers.

Marissa litigates a broad spectrum of employment litigation matters before federal and state courts, administrative agencies, and arbitration tribunals. She zealously defends her clients against claims and charges brought by current and former employees alleging discrimination, harassment, retaliation, wage and hour violations, breach of contract, violation of restrictive covenant obligations, and misappropriation of confidential information claims. Marissa is also well-versed in representing clients in connection with investigations launched by various federal and local government entities, including, the U.S. Department of Labor, the N.J. Department of Labor, the N.Y. Department of Labor, the U.S. Equal Employment Opportunity Commission, the N.J. Division on Civil Rights, the N.Y. Division of Human Rights, the N.Y.C. Commission on Human Rights, and the N.Y.C. Department of Consumer and Worker Protection.

Additionally, Marissa is often called upon to conduct independent workplace investigations and audits in response to complaints or claims made by current or former employees involving allegations of harassment, discrimination, retaliation, and other related issues. When conducting these sensitive investigations and audits, Marissa understands that businesses need an attorney who has the communication skills and tact necessary to effectively interview witnesses to gather information and evidence to serve as the foundation for the investigatory findings.

As the resident employment attorney in the firm’s Cannabis practice group since 2018, Marissa counsels employers regarding the growing anti-discrimination protections and drug testing regulations passed to protect medical and recreational cannabis users across the country. Marissa drafts substance-free workplace policies, drug testing programs, and hiring protocols for employers across industries that not only emphasize the importance of maintaining a safe working environment, but also foster positive company culture that is inclusive for cannabis users. As effective alternatives to impractical anti-cannabis policies, she also works with employers in creating and implementing workplace safety training for employees at all levels.

Prior to joining Cole Schotz, Marissa worked as a labor and employment associate for Proskauer Rose LLP. She also served as a law clerk for the Honorable Stephan C. Hansbury, P.J. Ch. (ret.) of the Chancery Division-General Equity Part.

 

thought leadership

Appreciated for providing forward-thinking insights into the employment law landscape, Marissa is regularly called upon by media outlets for her comments and insights into changing laws, regulations, and government-issued guidance. Marissa has been featured in prominent publications such as Bloomberg Law, Law360, the New York Real Estate Journal, SHRM, and HR.com, to name a few. Additionally, Marissa regularly presents seminars on employment law topics and has recently participated at the NJBIZ Human Resources Summit, Rutgers RWJMS Business of Medicine Series, and conducted the virtual webinar “Key Legal and Financial Safeguards for Your Practice and Vital Assets” to healthcare providers who own and/or manage their own practices.

 

Honors & Awards

Marissa has received various honors given for exhibiting excellence in the practice area. Marissa was named as a Finalist for the New Jersey Law Journal Innovator Award in 2024 and Marissa was selected for inclusion as a Forty Under 40 honoree by NJBIZ in 2023. Since 2022, Marissa has been recognized annually by the prestigious Chambers USA Guide. Marissa was also named as a “New Leader of the Bar” by the New Jersey Law Journal in 2022. Additionally, Marissa was recognized as a “2022 Employment Law Trailblazer” and a “2022 Cannabis Law Trailblazer” by the National Law Journal. Since 2020, Marissa has been selected annually to the New Jersey Super Lawyers “Rising Stars” list for her work in labor and employment law.

 

No aspect of this advertisement has been approved by the highest court in any state. 

See Award Methodology.

Areas of Practice

Employment

Employment Litigation  Employment Counseling 

Construction

Employment Litigation Employment Counseling

Litigation

HIGHLIGHTED INDUSTRIES

Healthcare

Healthcare Overview

Cannabis

Cannabis Overview

Financial Services

Financial Services Overview

Life Sciences

Life Sciences Overview

Construction

Construction Overview

Education

Seton Hall University School of Law, J.D.
Lehigh University, B.A.

Bar & Court Admissions

New York
New Jersey
U.S. District Court, Southern District of New York
U.S. District Court, Eastern District of New York
U.S. District Court, District of New Jersey

Honors & Awards

Cannabis Law Trailblazer, National Law Journal
Chambers USA
Employment Law Trailblazer, National Law Journal
Forty Under 40, NJBIZ
New Leader of the Bar, New Jersey Law Journal
Ones to Watch, Best Lawyers
Rising Stars, New Jersey Super Lawyers

Client Perspective

"I’ve worked almost exclusively with Marissa Mastroianni for the past few years, and enjoy the relationship and trust we have developed. She has broad knowledge of employment law and able to help create strategies to achieve desired results while mitigating risk. She is always prompt to respond, including evenings/weekends as needed."
Jean Duncan Acme Smoked Fish Corporation
  • Blogs
  • NEWS + PUBLICATIONS
  • Webinars + Events
  • Awards + Recognitions

Blogs

  1. 01

    Second Circuit Holds That Employees May Qualify For Reasonable ADA Accommodations, Even If They Are Not Necessary For Job Performance

    April 23, 2025
  2. 02

    New Jersey Issues New Guidance Concerning AI in the Workplace

    April 21, 2025
  3. 03

    U.S. Supreme Court Issues Key Decision on FLSA Burden of Proof

    January 21, 2025
  4. 04

    RetireReady NJ: Reminder About The Requirements Under The New Jersey Secure Choice Savings Program Act

    January 13, 2025
  5. 05

    Employee Handbooks In 2025: Action Required For New York And New Jersey Employers

    January 7, 2025
  6. 06

    Attention New York Employers: New York Clean Slate Act Takes Effect

    December 2, 2024
  7. 07

    New Jersey Passes New Pay Transparency Law

    November 25, 2024
  8. 08

    Federal Court Strikes Down the DOL Salary Threshold Increase on a Nationwide Basis

    November 19, 2024
  9. 09

    Fifth Circuit Strikes Down the DOL Tip Credit Rule

    August 28, 2024
  10. 10

    Texas District Court Strikes Down the FTC’s Non-Compete Ban on a Nationwide Basis

    August 21, 2024
News + Insights

NEWS + PUBLICATIONS

  1. 01

    Justices’ New Bias Test Puts Performance Reviews in Legal Bind

    April 17, 2025 | Bloomberg Law
  2. 02

    2025 Women in Construction: Marissa Mastroianni, Cole Schotz P.C.

    February 25, 2025 | New York Real Estate Journal
  3. 03

    Understand and Prevent Hostile Work Environments

    October 25, 2024 | SHRM
  4. 04

    Punching In: Labor Agency’s AI Tips Are Information Overload

    September 30, 2024 | Bloomberg Law
  5. 05

    New Jersey Legal Awards 2024: Finalists Announced

    August 29, 2024
  6. 06

    EEOC: Monitor Subcontractors’ Harassment Prevention

    June 20, 2024 | SHRM
  7. 07

    Punching In: New Biden Worker Classification Test Implemented

    March 11, 2024 | Bloomberg Law
  8. 08

    Supreme Court to Decide Whether Cases Must Be Stayed Pending Arbitration

    January 30, 2024 | SHRM
  9. 09

    4 State Law Areas Bias Attys Should Watch In 2024

    January 11, 2024 | Law360
  10. 10

    Employment Discrimination Cases To Watch In 2024

    January 1, 2024 | Law360
News + Insights

Webinars + Events

  1. 01

    Navigating the Ever-Changing Employment Law Landscape: Common Mistakes Small Businesses Make and How to Avoid Them

    May 21, 2025
  2. 02

    NJBIZ Human Resources Summit

    December 5, 2024
  3. 03

    Business of Medicine Series

    December 19, 2024
  4. 04

    Key Legal and Financial Safeguards for Your Practice and Vital Assets

    March 13, 2024
  5. 05

    Family Nurse Practitioner in Emergency Care Program at Rutgers School of Nursing

    April 3, 2024
  6. 06

    Business of Medicine Series

    December 7, 2023
  7. 07

    Women in Medicine Wealth Forum: Negotiate Your Worth & Empower Your Earnings

    September 26, 2023
  8. 08

    Practice Management Webinar Wednesday: Are Non-Competes a Thing of the Past?

    October 25, 2023
  9. 09

    Program for Residents of the Obstetrics and Gynecology residency program at Jersey Shore University Medical Center

    June 20, 2023
  10. 10

    NJDPA’s Annual Independent Physicians Summit

    March 31, 2023
News + Insights

Awards + Recognitions

  1. 01

    18 Cole Schotz Attorneys Recognized in 2025 New Jersey Super Lawyers List

    March 25, 2025 | Cole Schotz Press Release
  2. 02

    Best Lawyers Recognizes 69 Cole Schotz Attorneys on 2025 Lists

    August 15, 2024 | Cole Schotz Press Release
  3. 03

    Cole Schotz Continues Upward Trajectory in Chambers USA Rankings

    June 6, 2024
  4. 04

    19 Cole Schotz Attorneys Recognized in 2024 New Jersey Super Lawyers List

    March 25, 2024 | Super Lawyers
  5. 05

    Best Lawyers Recognizes 73 Cole Schotz Attorneys Across Award Categories on 2024 Lists

    August 17, 2023 | Cole Schotz Press Release
  6. 06

    Introducing the 2023 NJBIZ Forty Under 40 honorees

    August 10, 2023 | NJBIZ
  7. 07

    Top 10 Influential Labor & Employment Lawyers Shaping New Jersey’s Landscape

    July 9, 2023 | Business Today
  8. 08

    Cole Schotz Continues to Climb the Chambers USA Rankings

    June 1, 2023 | Cole Schotz Press Release
  9. 09

    25 Cole Schotz Attorneys Named 2023 New Jersey Super Lawyers

    May 11, 2023 | Cole Schotz Press Release
  10. 10

    Chambers USA Recognizes 27 Cole Schotz Attorneys and Eight Firm Departments

    June 1, 2022
News + Insights

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