Mark T. Phillis handles a wide range of employment issues with a focus on those related to the Family and Medical Leave Act and the Americans with Disabilities Act. He also handles cases involving:

  • Unlawful discrimination and harassment
  • Employment litigation
  • Wage and hour issues
  • The Employee Retirement Income Security Act

He represents employers in federal and state courts and before the Equal Employment Opportunity Commission, the Pennsylvania Human Relations Commission, and other administrative agencies.

He also counsels unionized and non-unionized employers on:

  • Employment policies and practices
  • Ways to avoid and minimize potential liability
  • Ensuring pay practice compliance with the Fair Labor Standards Act and related state wage and hour laws

A frequent speaker at seminars, Mark also conducts training for employers on topics such as harassment prevention, investigations and recruiting techniques. He serves as co-chair of the firm's Diversity and Inclusion Council and was one of the founding shareholders of the Pittsburgh office.

Most commonly, Mark works with clients in:

  • Financial services
  • Healthcare
  • Non-profit
  • Education
  • Manufacturing
  • Construction
  • High technology

Before joining Littler Mendelson, Mark studied at the Universidad de Salamanca in Spain and received an Organization of American States grant to study at the Universidad de Belgrano in Buenos Aires, Argentina. In law school, he was executive and production editor of the Journal of Law Reform.

Professional & Community Affiliations


Labor and Employment Section

American Bar Association


Labor and Employment Section

Allegheny County Bar Association

Member, Board of Directors

Residential Care Services

Former Board President

Residential Care Services

Former Board Member

Mental Health America - Allegheny County

Member, Advisory Board

Point Park University's Conservatory of Performing Arts


Alumni Admissions Program

Western Pennsylvania - Georgetown University


Named, The Best Lawyers in America©


News, Analysis & Press

High Court Silent on LGBT Cases

Business Insurance

April 1, 2019

Federal Agencies Diverge on Transgender Protections

Business Insurance

October 30, 2018

Labor of Law


March 1, 2018

Disability Suits Over Website Access Surge

Business Insurance

November 6, 2017

Federal Protection for LGBT Employees and Students

Today's General Counsel

August 1, 2017

Legal Industry Leads in Transgender Policies for Employees

Bloomberg Big Law Business

July 20, 2017

Supreme Court Declines Transgender Bathroom Case

Business Insurance

March 6, 2017

Are Outside HR Professionals Necessary in Discrimination Cases?

Bloomberg BNA Human Resources Report

March 2, 2017

Are Outside HR Professionals Necessary in Discrimination Cases?

Bloomberg BNA Daily Labor Report

February 13, 2017

Mitigating Risk by Addressing Issues Facing Transgender Issues

The Legal Intelligencer

November 7, 2016

Battling Transgender Discrimination

Human Resource Executive Online

July 11, 2016

Paid Sick Days Ordinance: Employers Should Start Preparing

The Legal Intelligencer

November 25, 2015

Where the human resource worries reside

Fleet Owner

July 17, 2015

Gays still lack full civil rights protection in Pennsylvania

Pittsburgh Post-Gazette

June 27, 2015

Gay marriage constitutional right, Supreme Court rules (video)

Charlotte Business Journal

June 26, 2015

2015 Roundtable Discussion on Diversity Issues

The Legal Intelligencer

June 2, 2015

The LGBT Travel Risk Dilemma

Risk Management

June 1, 2015

Supreme Court Hears Marriage Equality Cases

Society for Human Resource Management (SHRM)

April 29, 2015

GCs On Notice After UniTek Privilege Ruling


February 12, 2015

Supreme Court Ruling May Eliminate Costs of Inconsistent Marriage Laws

Society for Human Resource Management (SHRM)

January 22, 2015

Five local firms score well in LGBT equality

Lawyers Journal

December 26, 2014

Mailing of FMLA Notices Insufficient, Third Circuit Rules

Society for Human Resource Management (SHRM)

August 18, 2014

Keeping Them Safe

Human Resource Executive Online

June 17, 2014

WorkZone: Negative references can hurt job seekers, employers

Pittsburgh Post-Gazette

April 13, 2014

Making an Inclusive Workplace for the LGBT Workforce

Corporate Counsel

March 12, 2014

Supreme Court Narrowly Defines ‘Supervisor’ In Discrimination Case

Thomson Reuters Westlaw Journal Employment

July 10, 2013

Supervisors on the line: The case of Vance v. Ball State

Thomson Reuters Westlaw Journal Employment

December 26, 2012

Preparing for a Pandemic

The Pennsylvania Lawyer

September 1, 2008

Speaking Engagements

2017 New England Employer Conference

Boston, MA

October 27, 2017

What Turns an Employee into a Whistleblower and Are Whistleblowers Good for an Organization?

The 2017 Executive Employer® Conference

May 11, 2017

Paid Sick Time: Local Legislation Creates a Big Problem for Employers

The 2016 Executive Employer® Conference, Scottsdale, AZ

May 5, 2016

Same-Sex Marriage, Religion and the Workplace: Accommodating Constitutionally Protected (and Potentially Competing) Rights

The 2016 Executive Employer® Conference

May 5, 2016
Navigating the Complexities of FMLA, ADA and Other Overlapping Leaves of Absence Laws

Fairport, NY

March 15, 2016
Leave Issues for 2015 and Beyond: Avoiding 15 Common FMLA Pitfalls and Preparing for Pittsburgh’s Paid Sick Leave Ordinance

Pittsburgh, PA

September 22, 2015
A Year of FMLA and ADA Developments: Keeping Your Company Out of the Headlines

Pittsburgh, PA

September 23, 2014
Building a Diverse Workplace: Best Practices for Making Your Workplace LGBT Inclusive

March 4, 2014
The New FMLA Regulations – What You Need to Know Now

May 16, 2013

Developments under the ADA, the FMLA, and GINA

Labor and Employment Section - Allegheny County Bar Association

April 3, 2012

Under Attack! Independent Contractors and Contingent Worker Classifications

Pennsylvania Bar Institute

February 2012

Strategies for Handling Damages in Age Discrimination Cases

Pennsylvania Bar Institute

November 2011

Social Media and Social Networking: Navigating the Legal Perils of a New Electronic Workplace

Out & Equal Workplace Summit

October 2011

Wage & Hour Challenges – Avoiding Litigation

Pittsburgh Association of Human Resources Professionals

May 2011

Update on the FMLA, USERRA, and State Leaves of Absence

Pennsylvania Bar Institute

November 2010

The Basics of Employment Law

Pennsylvania Bar Institute

August 2010

On the Cutting Edge of Workplace Privacy: Rethinking Your Organization’s Strategy for Regulating Employees’ Communications

Pittsburgh Legal Administrators Association

April 2010

Diversity – An Introduction to the Elimination of Bias in the Legal Profession

Pittsburgh Legal Administrators Association

November 2009

The Do's and Don'ts of Interviewing

Pennsylvania Bar Institute

November 2009
H1N1 Flu: Preparing the Workplace for a Pandemic

Pittsburgh, PA

October 14, 2009

Dealing with the Problem Employee

Pennsylvania Bar Institute

February 2009

A Brand New (Work) Day: Coming Workplace Change in the Obama Era

College & University Professionals Association for Human Resources

December 2008

The Basics of Employment Law

Pennsylvania Bar Institute

June 2008

Dealing with the Problem Employee

Pennsylvania Bar Institute

June 2007

Advanced Topics in the FMLA

Pennsylvania Bar Institute

November 2006

Drafting Employment Agreements

Pennsylvania Bar Institute

April 2006

Damages Issues in Employment Discrimination Cases

Pennsylvania Bar Institute

November 2004

The New FLSA Regulations: A Look at the Changes

Pennsylvania Bar Institute

July 2004

Attorneys Fees in Employment Litigation

Pennsylvania Bar Institute

November 2003

Practical Tips for Handling Employment Discrimination Cases at the Administrative Stage

Pennsylvania Bar Institute

November 2002

FMLA Basics

Pennsylvania Bar Institute

December 2001

Establishing, Proving, and Rebutting a Retaliation Case

Pennsylvania Bar Institute

November 2000


  • J.D., University of Michigan Law School, 1992
  • B.S., Georgetown University, 1986magna cum laude, Phi Beta Kappa

Bar Admission



  • U.S. Court of Appeals, 3rd Circuit
  • U.S. Court of Appeals, 7th Circuit
  • U.S. Court of Appeals, 9th Circuit
  • U.S. District Court, Western District of Pennsylvania