Passmore has provided consulting services to a variety of corporate and government clients, including:
| PECO Energy | Johns–Manville |
| Esso–Interamerica | Joy Manufacturing Technologies |
| Lord Corporation | E–Systems |
| CIGNA HealthCare | Woolrich Inc. |
| University of Tennessee | Liquid Carbonic |
| Arkansas Rehabilitation Research and Training Center for Deafness and Hearing Impairment | International Graduate School of Management of the University of South Australia |
| National Institute for Metalworking Skills | Senate of Universiti Putra Malaysia |
| California State University at Long Beach | Campbell Communications |
| Research for Better Schools | Louisiana State University |
| National Center for Research in Vocational Education | John F. Kennedy Jr. Foundation |
| Law firm of Welch, Streb, Porter, Meyer & Wesley | Florida International University |
| Youthwork, Inc. | Special Olympics, Inc. |
| Altoona Blair County Development Corporation | McGraw–Hill Publishing Corporation |
| Career Program for the Deaf at St. Paul Technical Vocational Institute | General Educational Development Testing Service of the American Council on Education |
| LaPorte County (Michigan) Sheltered Workshop, Inc. | Virginia Polytechnic Institute |
| Pennsylvania Office of Attorney General |
Passmore has donated professional services to:
| Allegheny Mountains Convention and Visitors Bureau | Pennsylvania Department of Labor and Industry’s Bureau of Research and Statistics |
| Pittsburgh Post–Gazette newspaper | Government of Greece |
| American Society for Training and Development | Northeastern Educational Research Association |
| New England Educational Research Organization | Southern Alleghenies Regional Planning Commission |
| Industry Management Council of Rochester, New York | National Council on Measurement in Education |
| American Educational Research Association | G. Harold Silvius Foundation |
| Cape Cod Regional Technical Center | Osher Lifelong Learning Institute |
| Centre Daily Times newspaper |
Passmore was contributing columnist, with Rose M. Baker, for a regional business newspaper, Pennsylvania Business Central (also published periodically as Marcellus Business Central).