TABLE 2.

Results of hierarchical regression analyses.

Variables	Proactive work behavior			Task significance
	Model 1	Model 2	Model 3	Model 4	Model 5	Model 6	Model 7
Gender	0.12***	0.11***	0.08***	0.17***	0.15***	0.16***	0.16***
Position1	0.31***	0.28***	0.25***	0.25***	0.17**	0.14**	0.13*
Position2	0.28***	0.27***	0.24***	0.17	0.13	0.12	0.11
Education1	0.11	0.11	0.05	0.26*	0.27*	0.26*	0.26*
Education2	0.23	0.01	0	0.10**	0.06	0.07*	0.07*
Initiated task interdependence		0.13***	0.05**		0.36***	0.35***	0.11
Received task interdependence		−0.02	−0.02		0.004	0.02	0.03
Task significance			0.21***			0.36***	0.37***
Initiated task interdependence × Self-esteem							0.06
Received task interdependence × Self-esteem							−0.12*
R 2	0.069	0.101	0.173	0.036	0.186	0.238	0.241
ΔR2	0.069***	0.032***	0.072***	0.036***	0.15***	0.052***	0.003

N = 1,330, *p < 0.05; **p < 0.01; ***p < 0.001.