Vocational education prepares the workforce, so that in the process required learning that closer to the world of work. Internship there are two methods, namely cognitive apprenticeship and on-the-job training (OJT). The cognitive apprenticeship method is designed to bring the tacit process indirectly openly, where learners can observe, enact, and practice with the help of learners and other learners. OJT is a work instruction that occurs in the work environment and during work. Self-efficacy is a self-assessment belief with regard to one's competence to succeed in his tasks. In both methods, it is necessary to examine the effect on the self-efficacy of the apprentices. Because the factor of self-efficacy can affect success in the work. CA emphasizes problem-solving and task assignments and focuses on guiding cognitive and metacognitive learning, not on the physical, skills and processes. OJT is a work instruction that occurs in the work environment and during work, so in its implementation there tends to be no active participation from the participants. The results show that CA greatly affects the self-efficacy of interns rather than OJT. In cognitive apprenticeship placements, participants are given the freedom to solve the problems gained so as to have an impact on increased confidence. While on the OJT, the participants only followed instructions from the instructors in the field.