Exclusive Breastfeeding (EBF) is giving breastfeeding only during the first six months without other supplementary drinks or foods. Every mother has the right to give breastfeeding, including the working mother. Working mother is still considered as the one of the factors that causing the high rate of EBF failure, whereas in industrialized countries 45-60% of workers are reproductive age women. The purpose of this study was to describe and analyze the individual characteristics and occupational factors of EBF by working mother. This study was observational with cross sectional design. The respondents were 114 working mother. The independent variables in this study were age, education, work unit, and working hours. The dependent variable is EBF. A total of 47.4% of respondents gave EBF. Most of the respondents were aged between 20-35 years old and gave EBF of 40 respondents (54.8%), and almost half of them aged > 35 years old of 14 respondents (34.1%). Most of the respondents worked in non-shift work and gave EBF of 19 respondents (73.1%). A simple logistic regression analysis found significant influence between age and EBF (p = 0.036) and there was a significant influence between working hours and EBF (p = 0,004). We recommended for the company to make a schedule regulation about working mother who are still giving breastfeeding and not to work in shifts until they are ready to work in shift, so they can provide EBF for the infant.