The purpose of this study was to determine the effect transformational leadership on the performance and influence of work involvement on performance and the influence of transformational leadership and work involvement on employee performance the West Pasaman Regency Environmental Office. The type of research was expost-facto, with 167 respondents. The sampling technique is purposive sampling. The sample amounted to 118 people. Primary data was collected through quentionnaires using a like scale model that has been tested for validity and reliability. The result of this study prove and provide a conclusion that : 1) There is a positive and significant effect of transfrmational leadership on employee performance. 2) There is a positive and significant influence of work involvement on employee performance. 3) There is a positive and significant innfluence on transformational leadership and work involvement on the performance of the staff of the West Pasaman Regency Environmental Agency. The result of the analysis are know to be 0.734, this means the magnitude of the influence of transformational leadership and job involvement on the performance of employee of the West Pasaman Regency Environmental Service are 73.4 % and the remaining 24.6 % is influenced by other variables not included in the research model.