Adesola et al. (2021) conducted an exploratory study on GHRM and environmental performance of Nigerian manufacturing companies and applied linear regression for data analysis. The study found that green recruitment and selection, green training and development, green performance appraisal and green reward have a significant positive relationship with environmental performance in Nigeria's manufacturing sector. Mandago (2019) examined the influence of GHRM practices on the environmental sustainability in service-based state corporations in Kenya, using multiple regression technique. The study found that green recruitment and selection, green training and development, green reward and compensation, and green performance management practices have a significant positive effect on environmental sustainability. Similarly, Owine and Kwasira (2016) study investigated the influence of selected GHRM practices on environmental sustainability at Menengai Oil Refinery Limited in Nakuru, Kenya, using paired sample t-test for testing the hypotheses. The study found that green employee sourcing and green employee training and development have no significant relationship to environmental sustainability. Green performance management system and green occupational health and safety, on the other hand, were found to be positively correlated and to have significant relationship with environmental sustainability.
Rawashdeh (2018) examined the impact of GHRM on organizational environmental performance, and explored the relationship between GRS, GTD, and green reward on environmental performance in Jordanian health service organizations using multiple linear regressions for analysis. Results of the study indicated a significant positive relationship between GRS, GTD, and green rewards and environmental performance. Langat and Kwasira (2016) studied the influence of GHRM practices on environmental sustainability at Kenyatta University. They adopted Pearson correlation and multiple regression to determine the relationship between environmental sustainability and GHRM practices. The study found a positive and significant relationship between green ability and environmental sustainability. Jehan et al. (2020) investigated effect of GHRM practices on environmental sustainability using structural equation modeling to evaluate the relationship between the variables. The results revealed that GTD had a significant positive impact on environmental sustainability. However, GRS result showed insignificant effect on environmental performance.
Mobarez (2018) also evaluates the effect of GHRM on organization's sustainable environmental performance in Metal and other Industries in Egypt. The study employed multiple regressions for analyses of green recruitment, green training, and green learning. The results indicated that all the GHRM practice sub-constructs have positive and significant relationship to the organization's sustainable environmental performance. Muhammad et al. (2019) examined GHRM, green organizational culture and environmental performance at state hospitals in Palembang City, Indonesia. Multiple linear regression was used to test the hypothesis. The study revealed that GRS has insignificant effect on environmental performance, while green training and green compensation have significant effect on environmental performance. Zhoa et al. (2020) did a study on proactive environmental strategy and environmental reputation through the role of GHRM and discretionary slack in ecologically sensitive small and medium firms in eastern China. Their findings revealed that GHRM practice is significantly related to environmental reputation.
Bangwal et al. (2017) examined GHRM, work-life and environmental performance through direct and indirect effect of GHRM practices. Structural equation modeling (SEM) was used to analyze the data from 365 employees of Leadership in Energy and Environmental Design (LEED)-certified companies. The study found significant positive direct effect of GHRM practices on environmental performance. More so, Gill et al. (2021) studied the effect of GHRM on environmental performance through the role of employee eco-friendly. Multiple regressions technique and structural equation modeling were used for analysis. The study indicates that organizational GHRM has positive and significant effect on environmental performance. Singh and Shikha (2015) analyzed the impact of green human resource factor on environmental performance in manufacturing firms. Linear regression was employed to test the hypotheses. The result indicated significat and positive relationship between top management commitment, employee environmental training and green program on environmental performance.
It is worth noting that none of the studies reviewed included green job design and analysis, which entails integrating environmental sustainability related tasks, duties and responsibilities into each job. This has created a substantial gap.