Thomas Clark, PhDThomas Clark, PhD, President of CommuniSkills and Professor of Management at Xavier University, has been a writing and oral communication consultant for a wide variety of businesses including Procter & Gamble, “the business writing capital of the world,” where he has led over 400 business communication workshops.  He has also taught workshops for other Fortune 500 companies, including General Electric, Microsoft, Nestle, AK Steel, General Cable, Mars Petcare and Kellogg. He has published three books on business communication and one on career strategies. He has been honored with two Teacher of the Year awards at Xavier, and The US Small Business Administration has recognized him with three national awards for teaching excellence in the field of entrepreneurship. He earned his doctorate at Indiana University and is certified as an instructor in both Crucial Conversations and Crucial Accountability.

The Great Communicator, Tom Clark – Xavier Magazine (pdf)

Power Communication 

Career Strategies

Richard Zaunbrecher, BChE, MBARichard Zaunbrecher, BSChE, MBA, Vice President and Director of CommuniSkills’ Boston office has a diverse background that allows him to understand and give constructive feedback on a broad range of business communication issues. He first learned sound business communication principles at Procter & Gamble, the business communication capital of the world. He has worked with CommuniSkills for 25 years and has taught both oral and written communication skills to a variety of businesses including Microsoft, Safeway, P&G dos Brazil, Gillette, AliCorp, Credit Suisse First Boston, Coca-Cola, Citibank, Viacom, Clorox, KPMG, General Electric, Union Central Insurance, Clarica,  Allstate, and Prudential Insurance.


Marilyn K. Clark, MAMarilyn K. Clark, MA, Vice President develops and teaches classes for business clients such as Procter & Gamble and General Cable, and non-profit organizations such as The Girl Scouts. Her work has been published in several newspapers, magazines and journals.  As a free-lance editor, she has edited numerous books, articles and scripts. In addition, she has been adjunct faculty member of the English Department at Xavier University and also in the Department of Management and Entrepreneurship at Xavier.  Her play, Mrs. Cratchit’s Christmas, premiered at the Sharonville Children’s Theater in December 2016 and was reprised in 2017.

Julie Stewart, MA

Julie Stewart, PhD, Vice President and Director of Training,  hires and trains facilitators for CommuniSkills.  She teaches Management Communications classes at Xavier University and the University of Cincinnati as well as teaching business writing, speaking and interpersonal communication classes for clients such as Procter & Gamble and TriHealth. She is an expert in nonprofit management, with successful work  experience as an executive with several nonprofits.


Brian Clark Communiskills picture (2)

Brian Clark, MBASSBB, Director of Operations Clark earned an MBA from Xavier University in 2009 and a Six Sigma Black Belt in 2014.    He has conducted communication skills training for Procter & Gamble, AK Steel, Hixson Architecture and General Electric employees. He has also provided Operations, LEAN Six Sigma, and Process Improvement consulting with TriHealth, Mercy Health, and CommuniSkills.


Jeffrey Stewart

Jeffrey Stewart, MBA, MS-IS, Technology and Digital Management. Jeffrey has experience in both the for-profit and non-profit sectors at providing custom technology and web solutions.  His complete solutions focus on strategies that match your organizations goals and integrate with existing capabilities to create a custom, affordable and effective answer to your organization’s challenges on the web, with modern social networks or with planning, selecting and implementing new technologies.




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