Influence of OSH Awareness, Training, Equipment, and Supervision on Construction Safety in Jakarta: A Quantitative Study

The construction industry remains a major contributor to Indonesia’s economic growth, accounting for approximately 10% of the national GDP in 2022. However, despite substantial infrastructure investment and post-pandemic recovery, workplace accidents remain prevalent, rendering construction one of the riskiest sectors in the country. This study examines the influence of four dimensions of Occupational Safety and Health (OSH)—awareness, training, equipment, and supervision—on workplace safety within large construction firms in Jakarta. A quantitative approach was employed, involving structured questionnaires distributed to 81 managerial-level respondents. Statistical analysis using SPSS revealed that while all four OSH dimensions collectively influence workplace safety, only equipment demonstrated a statistically significant individual effect. These findings highlight the critical importance of integrating high-quality equipment within broader OSH strategies. Practical implications suggest that interventions focusing solely on awareness or training are insufficient unless complemented by robust provision and maintenance of protective equipment.