Communication is a basic human activity, both individuals and organizations. With good communication, the performance of a company can run smoothly and successfully. This final project aims to determine the impacts of internal communication on employees’ performance at Finance and Personnel Department in PT Wijaya Karya Beton Sales Region IV. Data were collected through observation and interviews with 4 informants working at Finance and Personnel Department in PT Wijaya Karya Beton Sales Region IV. The data obtained were primary data and secondary data, triangulation of data collection is then analyzed with descriptive qualitative method. The data shows that internal communication are complaint, report, opinion, instruction, meeting, and motivation. Besides the employees’ performance could be done effectively, efficiently and on time. Based on the data collected, it can be concluded that the impacts of internal communication on employees’ performance at Finance and Personnel Department in PT Wijaya Karya Beton Sales Region IV, could create good relations between employees with leader and among fellow co-workers. So that the employees performance was good, and it was in accordance with the company's goals. . .