Case studies have become a widely-used instructional tool in many educational environments. The use of case studies began in the 1950s at Harvard Business School. Today, they may be used as part of a course of study, or as the main focus of a course, to which other material is added. While the use of case studies is prevalent in schools of business and medicine, they are not often used in adult education or human resource development. This may be because there are no current major publications that deal with the use of case studies in these disciplines; nor are there any major databases of adult education or human resource development case studies for instructors to use. Good case studies can bring reality into the classroom. They can provide frameworks for discussion based on issues that must be faced in real life. Complex case issues can be broken down and examined for greater understanding, then pulled together again for resolution. Case studies can be used successfully in adult education. The author proposes a book based on the use of case-based learning in adult education and human resource development (HRD). The book could be positioned as a supplement to course textbooks for courses in adult education and HRD. Contents of this book include: (1) Introduction to Case Studies; (2) Using Case Studies; (3) The Case Studies and Activities in this Book; and Case Studies and Activities: (4) Write Your Own Case Study.