The present study purpose is to examine the effect of interest, talent, work facilities, social environment and wage on the performance of P4TK employees in the building and electricity field in Medan. Research populations are employees of general functional, specialized functional, educational laboratories, and education personnel development. Sample selection by census method is sampling where all members of the population are samples totaling 66 employees. Data used are derived from primary data and secondary data. This research analyzes the influence of interest and talent, work facilities, social environment, wages on the performance of P4TK employees in the field of building and electricity. The research method uses multiple regression by controlling it from the classic assumption test. The results of this study have found that partially interest and talent, social environment, wages have no significant effect on employee performance while work facilities have a significant impact on employee performance. However, interest and talent, work facilities, social environment, wages have a significant effect on employee performance simultaneously. Among the five independent variables, work facilities have the most significant influence on employee performance