Differences in wage rates for males and females in the health sector: a consideration of unpaid overtime to decompose the gender wage gap

Table 4 Blinder–Oaxaca decomposition of differences in hourly wage rates between males and females ^a

Overall	Coeff.	Robust SE	95% CI		Coeff.	Robust SE	95% CI
group_1 (males)	25.948	0.192	25.574	26.328
group_2 (females)	21.274	0.093	21.092	21.456
difference	1.220	0.010	1.199	1.240
explained	1.046	0.006	1.034	1.058
unexplained	1.166	0.008	1.150	1.183
	Explained				Unexplained
Separated/div/wid	1.001	0.001	1.000	1.003	0.995	0.002	0.991	1.000
Never married	1.000	0.000	0.999	1.001	0.992	0.003	0.987	0.998
Year 11/lower	1.002	0.002	0.998	1.007	0.995	0.004	0.987	1.003
Year 12	1.002	0.001	1.000	1.004	0.998	0.002	0.993	1.002
Tertiary	0.999	0.001	0.996	1.002	0.997	0.004	0.988	1.005
Postgraduate	1.003	0.001	1.001	1.005	1.026	0.005	1.016	1.036
Manager	1.002	0.001	1.001	1.003	0.996	0.003	0.991	1.001
Clerical/service	1.018	0.002	1.015	1.021	0.993	0.004	0.986	1.000
Trade/labour	0.962	0.002	0.957	0.967	1.005	0.002	1.002	1.008
Number of children	1.018	0.002	1.014	1.021	1.001	0.004	0.994	1.008
Local	1.024	0.002	1.020	1.028	0.980	0.003	0.973	0.986
Private	1.000	0.000	1.000	1.001	1.003	0.001	1.000	1.005
Number supervised	1.002	0.001	1.001	1.003	1.001	0.003	0.995	1.007
PE	1.005	0.001	1.002	1.008	1.355	0.079	1.208	1.520
PE²	0.997	0.001	0.994	1.000	0.862	0.029	0.807	0.921
Unpaid overtime	1.011	0.002	1.008	1.014	1.004	0.005	0.995	1.014
_cons					1.014	0.029	0.958	1.072

^aResults retransformed to the original scale. For ease of interpretation, gender codes are reversed: male = 0; female = 1. CI, confidence interval; Coeff. coefficient; PE, experience proxy; SE, standard error; Separated/div/wid, separated/divorced/widowed.
Source: Work Outcomes Research Cost-benefit Survey 2005/06.

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