On-Job Training (OJT) was a curriculum-based cooperative learning program. The students who underwent OJT were required to work or be a student trainee for any company related to their field of work in order to expose them to actual on-hand experience in the workplace. The instruments in this research were: (a) analysis of essay examinations and diary writing, (b) interview of participants, and (c) M1R2 rating scale and (d) questionnaire on the effectiveness of tutorial sessions.