The purpose of the study is to find out the influence of big five personalities and communication competencies on commitment to tasks with intrinsic motivation as a mediation to officials making procurement of goods and services in Pesisir Selatan Regency. This type of research is quantitative research that is surveyed. The population of this study is the commitment-making official of procurement of goods and services in Pesisir Selatan Regency."The sample in the study was 152 respondents." Research instruments are questionnaires distributed to respondents. Data analysis using SEM PLS. The results of this study are big five personality and communication competence significantly positively affects intrinsic motivation. The Big five personalities, communication competencies intrinsic motivation positively affect commitment to a task. Intrinsic motivation is a mediation between the big five personalities and communication competence to a commitment to a task.