Sample Clients

• John Deere
• Cornell University
• Smithsonian Institute
• Deloitte
• London Business School
• America Online
• USA JOBS
• U.S. Patent and Trademark Office

• Ohio State University
• Transportation Security Administration (TSA)
• American Express
• Urban Land Institute
• Federal Aviation Administration (FAA)
• MENSA

What Clients Say

Outstanding references available upon request.

“Every employee should be given the opportunity  to participate in OCC programs.” 
—Senior Director, St. Louis, MO

“Highest marks.  Developed trust, humorous, clear, warm, engaging, upbeat, kind.” 
—Executive Director, Charleston, SC

“The finest consultant I ever worked with.”  
—Senior Executive, Kansas City, KS

"OCC seminars should be required for all leaders.”
—President, New York City, NY

"The OCC consultants' enthusiasm is contagious.”
—Chief Executive Officer, Miami, FL

“The best seminar leader I've ever encountered.”
—Executive Director, Los Angeles, CA

"Ms. Zack [OCC President] is energetic, charismatic, accessible, and conveys vast knowledge."
—Executive Vice President, Washington, DC

“OCC is amazing. We hope to work with you again…and again…and again!” 
—Executive Director, Philadelphia, PA