A Meta-Analysis of Polytechnic Students’ Knowledge and Awareness of 3D (Dirty, Dangerous, Difficult) Jobs Prior to Industrial Training

This meta-analysis synthesizes research on Malaysian Polytechnic students’ knowledge, awareness, and perceptions of Dirty, Dangerous, and Difficult (3D) jobs prior to industrial training. While TVET is central to Malaysia’s national development agenda, local youth continue to shun 3D sectors such as construction, manufacturing, and agriculture, leading to heavy reliance on foreign labor. This study draws from journal articles, theses, conference proceedings, and reports published between 2010 and 2025. A systematic review process identified more than ten relevant studies, which were analyzed thematically. The review reveals that students generally have moderate to high levels of conceptual knowledge of 3D jobs and occupational safety, but practical readiness and willingness to pursue 3D careers remain limited. Negative perceptions include low wages, unsafe working conditions, limited career prospects, and persistent social stigma, emerging as the primary deterrents. Gender and demographic factors further influence perceptions, with female graduates facing cultural barriers in male-dominated industries. The findings highlight that student reluctance is not ignorance but a rational assessment of labor market realities. The study underscores the need for structural reforms, including competitive wages, stronger safety curricula, improved industrial training experiences, and gender-sensitive educational practices. The implications are significant for aligning TVET outcomes with national workforce needs, enhancing graduate employability, and reducing dependency on foreign labor. By consolidating fragmented evidence, this meta-analysis contributes to a clearer understanding of the TVET and industry inconsistency and provides a foundation for targeted interventions.