This paper aims to examine the relationship between organisational change and exit, voice, loyalty and neglect (EVLN) behaviours of employees in the Nigerian oil and gas industry. By adopting a quantitative approach, the tools employed in analysing data collected through the use of questionnaires from 322 employees are factor analysis from the Analysis of Moments of Structure (AMOS 22.0) for windows. The study statistically revealed that organisational change is positively and insignificantly correlated to the Nigerian oil and gas employees’ exit, voice, loyalty and neglect behaviour. These findings reveal the type of sector employees’ work for and the role of trade unions in times of change. This study is intended to support managers and practitioners in assessing and evaluating organisational change programmes, particularly in the context of a developing country like Nigeria that is heavily dependent on revenues from the oil and gas sector.