This research aimed to assess the operational and environmental performance of small- and medium-sized enterprises (SMEs) in Nigeria in relation to their adoption of personality-traits taxonomy (i.e., conscientiousness, openness to experience, extraversion, neuroticism or emotional resilience and agreeableness). The survey-based study involved the entire population of SME operators in South West Nigeria, totaling 1842 individuals (i.e., entrepreneurs). Through the use of stratified random-selection methods, a sample size of 420 was chosen. Data was collected, and both structural and measurement models were used to assess it. The results of the study demonstrate that personality traits have a significant influence on how successful SMEs function. The results also demonstrate that personality traits have a positive impact on SMEs’ environmental performance. These findings suggest that sustaining operational and environmental performance may be accomplished by resource allocation, promoting diversity and inclusion, and employing trustworthy assessment methods. To enhance both their overall operational performance and their environmental performance in particular, the study advises SME operators in Nigeria to undertake proper management of personality traits for sustainability. The paper recommends for greater research on this subject and emphasises the necessity of understanding how personality factors impact operational and environmental performance in Nigerian SMEs.

Emotional communication is gradually gaining the attention of various industries in Nigeria, particularly on the issues and concerns of sustaining employees’ fulfilment. Multigenerational diversity is considered a contributing factor for the retention of employees at work, but the mechanism behind this relationship remains unclear. Thus, main aim of this study was to investigate the influence of multigenerational diversity and emotional communication on sustainable employee fulfilment in the Federal Civil Service Commission of Nigeria. Respondents (i.e., directors, managers, and supervisors) were randomly surveyed across the various civil services in Nigeria using a stratified and purposive sampling technique. With the use of an online google form 416 questionnaires were retrieved and analysed using partial least squares (PLS). The results supported the predicted mediating role of emotional communication, and various ages among Gen Y have no differences within the studied relationships. The implication and limitations of these findings and directions for future research are further discussed to sustain the retention and work fulfilment of employees in the workplace.