This report investigates the health effects of welding fumes on construction workers in Singapore, focusing on the hazards and risks associated with exposure. The study addresses research questions concerning the health impacts of welding fumes, the specific hazards they pose, and the effectiveness of existing regulations. The literature review covers background information on welding fumes, respiratory constraints, breathing resistance, heat retention, communication issues, vision impairment, discomfort, and the use of respirators. The methodology section outlines participant selection, workplace details, apparatus used, data collection methods, and ethical considerations. The findings discuss the results and analysis of the data collected, with conclusions drawn regarding the impact of welding fumes on workers' health and the effectiveness of current safety measures. The report also emphasizes the need for improved worker protection and the implementation of effective strategies to mitigate the adverse effects of welding fumes, contributing to occupational safety and health within the construction industry.