The development of the use of high-tech machines in the manufacturing industry increases the complexity of the risk of work accidents so that the implementation of occupational safety and health (K3) and work discipline become important factors in improving employee performance. Although the relationship between K3, work discipline and performance has been widely researched, studies on the wood processing industry with high work risk characteristics are still relatively limited. PT Sumber Graha Sejahtera Purbalingga was chosen as the research object because it is a plywood manufacturing company that uses large-scale production machines and still faces problems with compliance with the use of personal protective equipment (PPE), work discipline and the risk of work accidents. These conditions are the basis for research to provide empirical evidence regarding the influence of K3 and work discipline on employee performance in high-risk industries. This research uses a quantitative approach with a census method of 85 employees as respondents. Data analysis was carried out using the Ordinary Least Square (OLS) approach through multiple linear regression with the help of SPSS. which begins with testing the measurement model (outer model) and structural model (inner model) to test the relationship between variables. The research results show that occupational safety and health and work discipline have a positive and significant effect on employee performance, both partially and simultaneously. The coefficient of determination (R²) value of 0.210 indicates that 21% of the variation in employee performance can be explained by these two variables, while the remaining 79% is influenced by other factors outside the research model. These findings provide an empirical contribution regarding the importance of optimizing the implementation of K3 and work discipline in improving employee performance in the wood-based manufacturing industry which is characterized by high work risks.