This study aimed to describe and analyze the effect of workload and work environment adaptability on employee performance in the Fish Canning Industry of Bitung City. This research is under the umbrella of causal associative research with quantitative methodology. The location of this research was carried out in a fish canning industrial company in Bitung City, with the object of employees being fish canning companies. The results of this study indicate that the workload and adaptability of the work environment affect the performance of employees in the fish canning industry sector in Bitung City, which means that the lower the workload and the better the adaptability of an employee will improve employee performance. Based on the results of descriptive analysis of the data, it can be explained that the workload is formed by the use of time, targets to be achieved, and working conditions. The most significant role in forming an employee's workload is reflected in the feeling that using time is essential in the production process. The adaptability of the work environment is shaped by changes in legislation, technological developments and changes in market tastes. The most significant role in forming an employee's work environment adaptability is market changes reflected in the work that continuously adapts to the surrounding work environment. Performance is shaped by quality, quantity, timeliness, effectiveness and independence. The most significant role in the formation of employee performance is independence, which is reflected in employees always paying attention to the instructions given by their superiors in completing tasks.