To introduce an OEM course of problem-based learning(PBL) on tutorial basis, we developed the case-studies on both clinical and community contexts. The 2nd grade medical students were divided into eight small groups. The case-study course was for 3 weeks from September 30 to October 14 in 1998. There were 3 steps for design of case-study course : course planning, implementation, and evaluation which were conducted by 3 tutors and 91 students. We developed 32 cases, and a student solved 3 clinical cases during 3 weeks. There were 3 cases which were the case I(metals), the case II(solvent) and the case III(systemic toxicity). The case-study program was evaluated with questionnaire survey method at the start and end of the course by students. We obtained satisfactory responses from students. Multiple-choice tests revealed that students in case-study group had significantly(P<0.05) higher score than those attended the standard lecture. We concluded that problem-based learning with specific occupational contents is well accepted by students and improves their occupational medicine knowledge.
