Telecommunication infrastructure has an important role in economic development in Indonesia. Along with the development of the times, the need for a network to access the internet increases in demand. This has resulted in increased demand for telecommunications tower infrastructure development as the infrastructure for telecommunications operators in Indonesia to develop their businesses. However, with the high development of infrastructure development, there is a possibility that there will be risks to worker safety. This study aims to describe the safety climate in the construction of PT X Telecommunication Tower which consists of, a form of work safety awareness among business owners and service providers, forms of work safety behavior from workers to business owners and service providers, as well as knowing, and overcoming obstacles or obstacles to the concept with the hope of reducing the number of work accidents. The research method used is literature review and case study review to obtain variables and indicators that show the relationship and influence of safety climate, safety behavior, and safety awareness to improve safety performance in PT X telecommunication tower construction. Then the selected variables and indicators will go through the expert validation process. The results of data collection from experts and interviews that have been conducted, obtained 6 indicators of safety climate, 5 indicators of safety behavior, 3 indicators of safety awareness, and 3 indicators of safety performance.