The public sector is managed and administered by public managers / administrators working in a web of interpersonal relationships. The interpersonal relationships between and among workers of an organization imperatively involves the communication of goals, interests, feedbacks, challenges and information. There is hardly any activity in the Nigerian public sector which does not involve interpersonal relationships and communications. As a service delivery institution of the Nigerian government, the public sector consist of levels of interactions and relationships involving human elements, institutions, departments, ministries, commissions, agencies and units. How interrelationships within and outside the public sector are perceived, interpreted, understood and reacted to affect the performance of workers and organization. According to (Naumovski, Dana, Pesakovic and Fidanoski, n.d, p. 1), interpersonal communication and relationship is one of the significant factors for the establishment and development of the public sector institutions and the advancement of society in all its ramifications.Interpersonal relationships and communication can serve as an important mechanism through which the effectiveness, efficiency and quality of services rendered by public institutions are gauged, evaluated and measured. It is therefore imperative for public and private organizations to observe, assess and analysis how their workers relate with one another, the customers of the organization, stakeholders and the society (environment). Before we make further progress in the paper, we want to answer the question, what is interpersonal