This study aimed to figure out the effect of work discipline, motivation, and
competence to the work performance in MMS and DRC muffler home industry of
Purbalingga. This study was a quantitative research with survey method. Sample of
this study was 75 respondents who were the contract of the muffler home industry
obtained by using saturated sampling technique. Data of the study were tested
through some techniques; validity test, reliability test, classical assumption test, and
multiple linear regression analysis. The results of this study indicated that work
discipline, motivation, competence had a significant effect on employees' work
performance.