Employee performance is important in an effort to realize the goals as well as the success and achievement of a company. Companies must pay attention to the level and performance of their employees, especially the millennial generation. The performance of the millennial generation is very influential on the achievement and success of a company in realizing its goals, considering that the company's leaders will soon be replaced by the millennial generation. One of the things that can affect the performance of the millennial generation is by providing training and paying attention to the needs of the Millennial generation's physical work environment. This study aims to examine and analyze the effect of training and physical work environment on the performance of Millennial generation employees.

The population in this study were BPJS Employment employees at the Sumbagut Regional Office with all millennial generation employees as respondents. By using non-probability sampling, 183 respondents were selected by purposive sampling. The type of research used is descriptive quantitative. Data was collected by means of questionnaires and documentation studies.

Data analysis with the Structural Equation Modeling (SEM) approach based on Partial Least Square (PLS) was used to analyze the data to get clearer and more detailed results regarding the effect of career development and physical work environment on millennial generation job satisfaction at BPJS Employment at the Sumbagut Regional Office.