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This study aims to examine the influence of employee vitality and tenure on the nexus between citizenship fatigue and knowledge-sharing behaviour among academic staff in Ghanaian higher education institutions.

A sample of 876 faculty members from traditional and technical universities was chosen for the study using convenience sampling technique. Data was analysed using PLS-SEM with SmartPLS 4.

Results reveal that citizenship fatigue negatively influences faculty members’ knowledge-sharing behaviour. In addition, employee vitality and tenure mitigate the negative influence of citizenship fatigue on faculty members’ knowledge-sharing behaviour.

The findings suggest that the management of higher education institutions should focus on creating a workplace culture that cultivates workplace vitality and promotes long tenure to reduce the negative influence of citizenship fatigue on the knowledge-sharing behaviour among faculty members.

This study represents one of the earliest attempts to examine a theoretical framework that connects citizenship fatigue, employee vitality, knowledge-sharing behaviour and employee tenure within the context of higher education.

This study aims to investigate the mediating roles of servant leadership and employee vitality in the relationship between psychological ownership and employee creativity among healthcare workers in Ghana.

A sample of 736 public and private healthcare respondents was selected using a convenience sampling technique. Data collected using a self-reported questionnaire was analyzed via partial least square structural equation modeling.

The findings reveal that psychological ownership directly improves employee creativity, while servant leadership and employee vitality mediate the relationship between psychological ownership and employee creativity separately and complementarily.

The research used self-reported data, increasing the potential for common method variance. However, sufficient care was taken to minimize these limitations.

This research makes valuable contributions to the field of healthcare practice literature. The findings suggest that management of health care entities should focus on creating a workplace culture that cultivates psychological ownership among employees and policies that enhance employee vitality and promote servant behavior to foster employee creativity.

This study represents one of the earliest attempts to examine a theoretical framework that connects servant leadership, employee vitality, employee creativity and psychological ownership within the context of the health service industry.