Abstract: This research examined the corporate core values and service delivery, the case of Magerwa Ltd. Specifically the study had two objectives: to assess the ways in which corporate core values of integrity and efficiency are mainstreamed to achieve on-time service delivery in Magerwa Ltd and to investigate the key abilities of Magerwa Ltd to offer on-time service delivery, the target population was 150 customers of Magerwa Ltd where 114 respondents were sampled; information was gathered using questionnaire that were distributed to respondents by the researcher and the interview guide to compliment the data gathered from questionnaire.