Safety culture is a crucial component of ensuring workplace safety and preventing accidents. This study aimed to assess the safety leadership and safety culture of a polyester company in Thailand. Data gathering was conducted utilizing survey forms developed by the study team, including the 360-degree safety leadership survey and the 36-question safety culture survey. The sample group, comprising 1,286 individuals, consisted of management, employees, and independent contractors from a polyester company with four business units. Both the safety leadership and the safety culture perception surveys were provided with average values, thorough descriptions, graphical representations, and visuals. The study revealed that the perceptions of safety leadership and safety culture among the employees aligned with the standard level. However, certain issues, including off-the-job safety, communicating about safety, empowering other employees, setting safety standards and expectations, and promoting safety improvements and sharing, placed the organization’s safety culture at the foundational level, requiring management commitment and awareness development. For further actions, the company should emphasize the value of strategic workers' involvement in programs that empower employees, such as visible safety leadership for all management levels, notification and reporting programs, and safety sharing among business partners, to establish a world-class safety culture as the company's goal. Doi: 10.28991/ESJ-2024-08-01-017 Full Text: PDF