ObjectivesImmediate postnatal care is a critical intervention to reduce maternal and neonatal morbidity and mortality; however, many women and newborns receive inadequate postnatal care timely and effectively during the first 24 hours following childbirth. Therefore, this study aimed to assess the immediate postnatal care guidelines implementation and its associated factors among healthcare providers in the East Shewa zone public health facilities, Oromia, Ethiopia.DesignFacility-based cross-sectional study was conducted from 13 September 2022 to 28 October 2022.SettingThe study was conducted in 6 hospitals and 19 health centres in the East Shewa zone.ParticipantsAll healthcare providers who work in the maternity ward of the East Shewa zone public health facilities were the source population while all healthcare providers who work in the maternity ward of the randomly selected East Shewa zone public health facilities were the study population. Healthcare providers who were assigned to the delivery and postnatal ward during data collection were included in the study. Healthcare providers, who are not on duty for annual, maternity, sick and study leave, were excluded from the study.MeasuresA structured self-administered questionnaire and observational checklist were used for data collection. The questionnaires were pretested and data were collected by the Kobo toolbox software. Data were analysed by using the SPSS V.25. Binary logistic regression (bivariate and multivariable) analyses were done to identify significantly associated variables, and finally, an adjusted OR (AOR) at a 95% CI was used to declare significant variables depending on a p<0.05.ResultThe study revealed that 196 healthcare providers with a response rate of 97.03% were included in this study. The overall proportion of healthcare providers who have a good implementation of immediate postnatal care guidelines was 44.4% (95% CI 37.3% to 51.6%). Providers who received basic emergency obstetrics and newborn care training (AOR 3.72, 95% CI 1.7 to 8.1), working in a tertiary-level hospital (AOR 3.85, 95% CI 1.3 to 11.2), and who had maternal and newborn care guidelines in their facility (AOR 3.2, 95% CI 1.5 to 6.6) were significantly associated factors with good implementation of immediate postnatal care guidelines.ConclusionsImplementation of the immediate postnatal care guideline by healthcare providers in the maternity ward was found low as less than half of healthcare providers have good implementation. Receiving basic emergency obstetrics and newborn care training, having maternal and newborn care guidelines in their facility, and working in a tertiary-level hospital were significantly associated factors with good implementation of immediate postnatal care guidelines.