This paper investigated the impact of interpersonal deviant behaviour on organizational performance of oil servicing
companies in Port Harcourt, Nigeria. The measures of organizational performance utilized in this paper are productivity,
growth and survival. The research design used was a cross-sectional survey. Using purposive sampling, five companies were
drawn from the oil servicing sector and a total of eight hundred and two (802) employees from the five companies
constituted the study population. A sample size of two hundred and sixty-six (266) employees was drawn using the Taro
Yamane’s formula. Instruments for the variable were assessed for reliability using the Cronbach Alpha at a 0.7 threshold.
The Pearson’s Product Moment Correlation Coefficient as used to test the postulated hypotheses. The results revealed that
interpersonal deviant behaviour has negative but significant correlation with the measures of organizational performance.
Although interpersonal deviant behavior may start as a conflict between co-workers, it often mutates into other dimensions
of deviance and spills over to the organization impacting on property, production system and organizational processes to the
detriment of the performance of oil servicing companies. The study concluded that interpersonal deviant behaviour in the
workplace is an issue of serious concern to management and recommended that strategies be put in place to control and
mitigate conditions that trigger them.
KEYWORDS: Deviant Behaviour, Interpersonal Deviance, Organizational Performance, Productivity, Growth, Survival
VARIOUS EVALUATION IN PHYSICS AND MATHEMATICS FACULTIES OF GENERAL EDUCATIONAL SCIENCES