The use of web based learning is becoming more common in educational institutes nowadays. An online casebook for improving the learning and teaching processes of industrial accident analysis was developed and evaluated in this project. The online casebook was developed with six main components: Analysis Model, Nature of Accident, Self-Checking, Glossary, Cost Estimation, and Industrial Statistic Analysis. Comprehensive ergonomics glossary, real life case studies, and some related web resources were provided in the courseware. It also contains self-checking for testing users’ general qualitative concepts and terminology and further strengthens their understanding of the subjects. The effectiveness of the online courseware was evaluated with a questionnaire survey with a group of 92 students. Results showed that the online casebook allows students to acquire the knowledge and techniques of industrial accident analysis in a methodical manner. This courseware is expected to be useful for the students, occupational health and safety professional, and safety engineers in enhancing their knowledge on occupation health and safety. The courseware also could serve as a reference for companies, education institutions, and governments when designing web-based training course.