Table 4.

Test of mediating effect of SSG.

Variables	UPSB	UPSB	UPSB	SSG
Control variables
Gender	−0.144	−0.096	−0.134	−0.069
Age	−0.009	−0.023	0.000	−0.058
Education background	−0.055	−0.062	−0.054	−0.008
Years of work	−0.045	−0.082	−0.055	0.068
Job nature	0.132	0.139	0.129	0.016
Company type	0.006	0.016	0.004	0.011
Employee power distance orientation	0.010	0.013	0.003	0.039
Independent variable
PL	0.341 ***		0.280 ***	0.407 ***
SSG		0.257 ***
Mediating variables
SSG			0.151 ***
F	0.092 ***	3.690 ***	0.104 ***	0.171 ***
R2	0.11	0.078	0.124	0.171
△R2	6.131	0.048	6.14	10.281

Note: *** refers to p < 0.001.