Risk Assessment for Cattle Stunning Workers: A Case Study

Workers in the animal slaughtering and processing industry experience a higher risk of work-related injuries than in other job sectors. The rate of nonfatal occupational injuries in the animal slaughtering and processing industry remains nearly three times higher than the national average. To understand the specific risks and hazards associated with stunning activities in a slaughterhouse, we conducted a case study at the University of Florida Meat Processing Laboratory. The aims of this study were to quantify the risks during stunning activities and the effectiveness of new interventions at reducing injury risks. We used a mixed-method research evaluation approach. Occupational risk threats during stunning activities were determined through observational video surveillance and interviews with the employees about their perceptions of hazards and safety. The existing stunning box, used since the 1980s, was modified by adding engineering controls to enhance worker safety and improve animal restraint during stunning. Video surveillance data obtained before and after the installation of engineering controls demonstrated significant reductions in worker exposure to risks when stunning cattle. This paper discusses our research results and suggestions for improving safety conditions in meat processing facilities.