Work immersion is the process of exposing students to real-world work situations while also improving the competencies provided by the school. However, some students are struggling because they are not aware of the work immersion environment's tasks, responsibilities, and expectations. Thus, the researcher came up with an idea to formulate a pre-immersion training framework to equip and prepare senior high school students with essential skills, knowledge, and attitudes necessary for a successful work immersion experience. The framework was drawn from the following results: the senior high school students' self-assessment of their basic competencies, senior high school trainers’ assessment of their senior high school students’ basic competencies, and their work immersion supervisor’s assessment of the basic competencies during their work immersion. It also assessed the senior high school trainers’ or the schools’ preparation for the students before exposing them to the work immersion field or establishment. Lastly, this study investigated if there is a significant difference between the senior high school trainers’ assessment and work immersion supervisors’ assessment of the senior high school students' basic competencies. The result revealed that the self-assessment of senior high school students on their basic competencies is highly competent (4.10). Both the senior high school trainers’(4.21) and work immersion supervisors’ assessments (4.24) on senior high school students revealed they are exceptionally competent. The results also revealed that there is no significant difference between the senior high school trainers’ and work immersion supervisors’ on the basic competencies of senior high school students.