Table 2: Tests of mediating effects with moderation (N=349). 
Degree of adjustment 
variable 
Conditional Indirect Effect Moderated Mediator 
Estimate  Boot SE  BC 95% CI  INDEX  S.E.  BC 95% CI 
Low GHRM  0.1011  0.0428  0.0186  0.1881 
0.0137 0.096 0.0001 0.0362 
Medium GHRM    0.1102  0.0462  0.02004  0.2035 
High GHRM    0.1236  0.0523  0.0203  0.2298 
Note: This study uses bootstrap for random sampling 5000 times. 
 
so hypothesis 3 is supported; in model 6, employee 
autonomy motivation has a significant positive effect 
on employee green behavior (β=0.054, p<0.01), so 
hypothesis 2 is supported; after adding the mediating 
variable (autonomy motivation), the effect of green 
climate on employee green behavior (β=0.224, 
p<0.01) in model 7 remains significant, and 
employee autonomy motivation also has a significant 
positive effect on employee green behavior (β=0.186, 
p<0.01). Therefore, hypothesis 4 was supported. 
Third, the moderating effect test, i.e., the 
moderating effect of green HRM between green 
climate and employee autonomy motivation. In 
Model 3, after adding the moderating variable (green 
HRM), green climate still has a significant positive 
effect on employee autonomy motivation (β=0.595, 
p<0.01). Also, after the interaction of green climate 
and green HRM, it shows a significant positive effect 
on employee autonomy motivation (β=0.104, 
p<0.05), so hypothesis 5 is supported. 
Also, the point estimate of the mediating effect 
with moderation is 0.0137 and a 95% confidence 
interval of [0.0001, 0.0362], excluding zero. That 
means, as the value of green HRM changes from one 
standard deviation below the mean to one standard 
deviation above the mean of the rubric, the mediating 
role of employee autonomy motivation increases 
significantly, thus hypothesis 6 is supported. 
5 DISCUSSION 
5.1  Theoretical Implications 
The study improves the influence mechanisms 
affecting employee green behavior and provides an 
empirical evidence of self-determination theory in 
employee psychology and behavior research. 
Besides, by exploring the moderating role of green 
HRM, it provides a theoretical basis for how green 
policies can guide and promote employee green 
behaviors, and provides new perspectives for 
exploring environmentally sustainable development 
strategies at the micro level. 
5.2  Practical Implications 
Since green climate can have a positive impact on 
employee green behavior, companies could 
participate in building an pro-environmental culture 
and team climate, so that employees can be 
influenced in daily work. In addition, as the 
moderating effects of green HRM are verified, 
companies could adopt appropriate recruitment 
strategies to attract employees who share the same 
environmental values as the organization. 
5.3  Limitations and Future Research 
Due to reality factors, this study still has some 
limitations. Firstly, this study only used employees’ 
self-assessment. Self-evaluation from a single source 
may affect the authenticity and accuracy of the data. 
Future research can use multi-source data, such as 
evaluation of leaders and colleagues.   
Secondly, Autonomous motivation is not the only 
path for employees to produce green behavior, the 
motivation that drives employees to show 
environmental behaviors in the workplace may also 
include factors such as employees’ impression 
management motivation, which can be explored in 
future studies. 
6  CONCLUSION 
This study obtained the following conclusions: first, 
green climate can positively influence employee 
green behavior; second, autonomy motivation can 
positively influence employee green behavior; third, 
autonomy motivation shows a mediating role in the 
influence of green climate on employee green 
behavior; fourth, green HRM can positively 
moderate the influence of green behavior and 
enhance the mediating role of autonomy motivation. 
Therefore, we suggest that organizations could work 
on the development of an environmentally friendly 
society by building the green climate, and suggest 
that future research could explore other mechanisms