There is a growing concern on environmental sustainability globally in the 21st century. This concern has equally resulted to the emergence of various advocacy groups on just transition and the need to adopt environmentally friendly practices in organisations. Advanced countries are way ahead of developing countries in the research and adoption of environmental best practices in their organisation. There is paucity of research in green practices in Nigerian organisations and tertiary health institutions in
particular. The tertiary health care facilities in Nigeria to which the Federal University Teaching Hospital Owerri belongs is aware of the growing mission of environmental care in its operations while attending to its primary mission of health care. However, no study has been carried out in Federal University Teaching Hospital Owerri in particular on environmentally sustainable (green) human resource management practises and how it affects effectiveness of the organisation. Thus, this study examined the effect of green training and green performance evaluation on organisational effectiveness in Federal University Teaching Hospital Owerri, Imo State Nigeria. The population of the study was 202 members of staff of five departments of the hospital. The sample size was 134 members of staff of the five departments
obtained using purposive sampling technique. A close-ended questionnaire was adopted and modified from previous studies and re-created using google forms in a cross-sectional observation. Completed responses received was a total of 103 out of 134 forms distributed to both clinical and non-clinical staff of the departments representing a response rate of 76.87%. Data collected were presented in tables and analysed using descriptive statistics and inferential (multiple regression) statistics. The result shows that the green training (β = 2.402, p<0.01) showed a significant positive impact as the P value is less than 1%. Also, the result shows that the green performance evaluation (β = 0.644, p<0.01) has a significant positive
impact as the P value is less than 1%. This suggests that both environmentally conscious training and environmentally conscious performance evaluation have significant effects on organisational effectiveness. In fact, the regression result revealed that each contributes 32% and 46% of the variability in organisational effectiveness.