Abstract: Background: The study aims to investigate the connection between interpersonal relationship and employee performance. Methodology: Descriptive research survey was adopted as one hundred and sixty- eight (168) employees of Guaranty Trust Bank were sampled using cross sectional data from structured questionnaire. Findings: The result revealed that the three measure of interpersonal relationship are commonly rated high by the respondents with average mean of 4.07 for effective communication, 4.02 for team building, and social support has 4.04 mean. Specifically, it was revealed that rise in effective communication within the organization improves the performance of the employee within the threshold of 68%, team building increases same by 63% while social support at 86% appears to be the most important variables for the employee in terms of coefficient magnitude. Findings also showed that high quality interpersonal relationship improves the work performance of the employee through improved communication, motivation, teamwork, assisting each other’s and improvement in the performance of the employee while destructive relationship within the organization creates friction and unhealthy rivalry within the organization and tends to dampen the performance of the employee instead of improving. Recommendation: Therefore, the management of Guaranty Trust Bank should adopt the dimensions of interpersonal relationship used for the study as strategies for improving their level of performance.Abstract: Background: The study aims to investigate the connection between interpersonal relationship and employee performance. Methodology: Descriptive research survey was adopted as one hundred and sixty- eight (168) employees of Guaranty Trust Bank were sampled using cross sectional data from structured questionnaire. Findings: The result revealed that th...Show More