This project focuses on The impact of human relation in the management of an organization, a case study of Obajana cement factory. The research work tends to highlights the need for managers to have good human relation skills. This is highly needed in the private and public sector offices for satisfaction, productivity and industrial harmony. It is also required for dissemination and safe-guarding of information and in relating with people both in and outside of the organization. For the completion of this study, a well structured questionnaire was prepared and distributed to practicing managers, staff and some other customers in order to obtain necessary information in carrying out the research, text books and lecturer note and personal experience where also used in conducting the study in addition to the questionnaire. The study brought out the fact that a poor human relation from managers has effect on the image of the organization, its productivity and profitability. In order to achieve success therefore, among others it is recommended that manager must relate well with their bosses, colleagues, subordinates and customers/visitors. This should improve the image, create a conducive environment as well as increase the productivity and profitability of the organization.