Creating a safe work environment is essential and a top priority. One indicator of the work environment assessment is to assess the safety culture applied by the company's management. A good safety culture will successfully prevent potential hazards in the workplace and vice versa. Therefore, this study aimed to develop the Repository Safety Model Canvas (Repository SMC) as a tool to improve safety culture maturity based on best practices in scientific articles about Occupational Health and Safety (OHS). Additionally, it aimed to measure safety culture based on seven dimensions of the safety model canvas (commitment, leadership, responsibility, competence, engagement & involvement, information & communication, and organizational learning). Furthermore, it validated the SMC repository using a case study of PT. Prima Alam Gemilang provided recommendations for improvements to companies implementing the SMC repository. Data was collected by distributing questionnaires based on random cluster sampling to 112 workers. The results of the assessment of the maturity level of safety culture in the observed company obtained a value of 3,428 in the calculative category. This study showed the sequence of safety culture improvement that needed to be addressed by company management, starting from the dimensions of competence (1), commitment (2), engagement & involvement (3), organizational learning (4), information & communication (5), responsibility (6), and leadership (7). The smaller the number in the priority flow, which indicated the level of the tendency, required to be addressed first. Meanwhile, the strategic recommendations for each stage in the SMC Repository were determined based on the needs and suitability of the company's circumstances.