Exclusive breastfeeding up to 6 months presents a challenge for working mothers due to dual roles. According to Lawrence Green’s theory, maternal knowledge and attitudes are internal predisposing factors that underlie health behavior, including breastfeeding success amid workplace limitations. This study aims to analyze the effect of maternal knowledge and attitudes on the success of exclusive breastfeeding among working mothers. This quantitative cross-sectional study involved 88 working mothers at Tambakrejo Public Health Center, Surabaya City, selected via simple random sampling. Data collected through questionnaires were analyzed using the Fisher-Freeman-Halton Exact Test for knowledge and the Fisher's Exact Test for attitudes. The results showed a significant effect of both maternal knowledge (p < 0.001) and maternal attitude (p = 0.027) on the history of successful exclusive breastfeeding among working mothers. Good knowledge and a positive attitude formed since pregnancy serve as crucial internal assets for working mothers to overcome breastfeeding barriers. Therefore, enhancing literacy and strengthening mothers' attitudes starting from pregnancy are necessary to support exclusive breastfeeding success when mothers return to work.
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