The high accidents rate in infrastructure projects in Indonesia in the last 1 (one) year due to lack implementation of the Occupational Health and Safety Management System in its entire project. One of the key indicators that influence it is the safety cost allocation. Currently, there is no structured guidelines to prepare cost of safety that is in accordance with the conditions of infrastructure projects in Indonesia. The purpose of this study is to address this gap by conceptualizing cost of construction safety as a more structured model for construction safety improvement. A conceptual framework which is not only integrate construction project management theory and regulation in Indonesia, but also consider project scope, project duration, project location, hazard analysis, and safety program, is proposed. This conceptual paper contributes to the emerging literature on safety cost and produce a systematic model of safety costs by involving appropriate risk control, and considering applicable regulations.

The rise of separatist actions in various regions in Indonesia raises concerns for all parties, including contractors as providers of construction project services. Not only separatism, thuggery acts that occur in the construction project environment are also considered to be 'natural'. The current SMK3 cost planning does not take into account events in different project locations, particularly in the western, central, and eastern parts of Indonesia. This should be considered since each region in Indonesia has different climatic conditions and characteristics. This study focuses on analyzing the relationship between project location and building height on K3 cost and further reviews the factors in these variables which are the dominant influence on K3 cost. The purpose of this study is to analyze the factors in each variable that affect K3 costs and analyze the relationship between project location variables and building heights on the K3 cost model in Rusunawa construction projects. This study analyzes data from 5 experts and 12 respondents who work in construction companies using quantitative methods and questionnaires. The results of the study indicate that there are 5 variables with 33 indicators that affect the K3 cost of the Rusunawa construction project.

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