The success of the organization in achieving goals, one of which is influenced by human resources who act as mobilizers. Company XYZ is a manufacturing industry in the food sector that produces souvenirs of typical Yogyakarta food. From preliminary studies, information was obtained that production targets exceeded production capabilities so that many employees worked overtime for 12 hours, rest periods were not replaced with overtime pay. Problems were found such as disorderly employees attending, negligent employees in maintaining production equipment, machines that could not operate until many products failed causing the production process to be ineffective and efficient. The purpose of this study is to determine the effect of workload and work environment on employee performance in Company XYZ. The research method is casual associative with a quantitative approach. Sampling using simple random sampling, which is as many as 100 employees of the production department. Data analysis techniques are descriptive analysis and multiple linear regression analysis. The research instruments were the IBM SPSS questionnaire and application. The results showed that each workload (β = -0.461; p<0.001) and work environment (β = 0.590; p<0.001). The contribution of workload and work environment to employee performance was 20.9% (ΔR² = 0.209) and 33.7% (ΔR² = 0.337) respectively. While the load and work environment (β workload = -0.322 and βwork environment = 0.498; p<0.001) and both together contribute 43.0% ( ΔR² = 0.430) to employee performance.