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Parental Leave Take-Up of Fathers in Luxembourg

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Abstract

The study uses administrative data from Luxembourg to investigate fathers’ decisions to use parental leave. We focus on two measures of opportunity cost: the difference between the parental leave benefit and the salary of the father and the mean salary growth for a period of 6 months for each father. The first measure captures the direct opportunity cost, while the second is a proxy for foregone promotion opportunities. We use Cox proportional hazards model for the analysis. The results suggest a negative relationship between foregone income and taking parental leave. Surprisingly, salary growth appears to be positively related to the hazard of taking parental leave. Coefficients of control variables are in line with previous findings: fathers are more likely to use parental leave if they work in larger organization and for the first child.

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Notes

  1. As the data for this study are for the period 2000–2008, the described policy framework refers to the same period. Updated information on the parental leave framework of Luxembourg and other countries is available on the website of the International Network on Leave Policies and Research.

  2. Eligibility for parental leave is based on working (not necessarily residing) in Luxembourg for more than 20 h per week for a minimum of 2 years for the same employer.

  3. The duration of the leave is fixed and cannot be reduced or increased. All the months must be used in one block of time.

  4. Adoption leave and postnatal maternity leave last for 2 months. In case of breastfeeding, postnatal maternity leave could be extended to 3 months.

  5. The amounts are halved for the part-time case.

  6. Luxembourg introduced parental leave relatively late in the EU under the requirements of Council Directive (96/34/EC). At that time, Luxembourg, alongside Ireland and the UK, was among the few countries in the EU 15 that had still no parental leave measures and where the Directive resulted in a substantial change of the national legislation (Hall 1998). Hall (1998) reports that prior to 1998, women employed in the private sector could take a year off for the reasons of raising a young child. However, they were not guaranteed re-employment, but merely a priority in case suitable positions were available. In the public sector, female employees could take up to two years of parental leave and request unpaid leave or reduced working hours until their children reach the age of 15. However, their return to work was based on the availability of suitable vacancies.

  7. Figures from the report are available until 2017, however in 2017 there is a rapid increase in number of users due to the change of rules.

  8. About 40% in 2002 (OECD 2003).

  9. Eligibility criteria are having worked for more than 20-h per month for a minimum of one year with the same employer.

  10. Eligibility for social security provisions, such as parental leave in the EU, is based on the country of work and not the country of residence or nationality.

  11. The analysis has been performed using the Free Statistical and Programming Environment R (R Core Team 2015) and the package survival (Therneau 2014).

  12. There are some solutions already proposed in the literature concerning middle censoring in parametric models. The interested reader is referred to Iyer et al. (2008) and Davarzani and Parsian (2011).

  13. Since 2008, Luxembourg does not distinguish between white and blue-collar work any more (Association des Banques et Banquiers Luxembourg 2009). However, as the analysis refers to the time period before 2008, the variable has been recorded and could be included in the analysis.

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Acknowledgements

This research project has been funded by the National Research Fund, Luxembourg. This paper is based on a PhD dissertation completed at Maastricht University/UNU-MERIT. Valuable feedback for improving this paper has been provided by Joan Muysken at Maastricht University. Isabelle Debourges at IGSS Luxembourg has provided important advice on the data analysis.

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Corresponding author

Correspondence to Nevena Zhelyazkova.

Appendices

Appendix 1: Distribution of Covariates

Variable

Count

%

Events

Events %

Salary opportunity cost

 Negative

15,693

0.05

96

0.12

 < 500 €

43,103

0.15

199

0.26

 500–1000 €

44,575

0.15

124

0.16

 1000–1500 €

35,145

0.12

69

0.09

 1500–2000 € (reference)

27,185

0.09

60

0.08

 2000–5000 €

90,063

0.30

165

0.21

 5000+ €

40,306

0.14

56

0.07

 Missing

500

0

0

0

Salary growth in past 6 months

 [0, 0.989] (reference)

59,130

0.20

150

0.20

 (0.989, 0.998]

59,130

0.20

175

0.23

 (0.998,1]

59,278

0.20

160

0.21

 (1,1.02]

58,982

0.20

147

0.19

 (1.02,5.59]

59,130

0.20

136

0.18

 Missing

920

0

1

0

Monthly working hours

 173 (reference)

134,30

0.45

285

0.37

 < 173

63,571

0.21

279

0.36

 173+

98,069

0.33

205

0.27

 Missing

500

0

0

0

Size enterprize

 Medium (50–200) (reference)

55,886

0.19

64

0.08

 Small (< 50) or not applicable

59,025

0.20

69

0.09

 Large (200–1000)

75,381

0.25

100

0.13

 Very large (1000+)

63,567

0.21

497

0.65

 Missing

42,711

0.14

39

0.05

Nationality

 Luxembourg (reference)

92,465

0.31

303

0.39

 France

72,459

0.24

156

0.20

 Portugal

38,117

0.13

84

0.11

 Belgium

41,575

0.14

95

0.12

 Germany

19,626

0.07

24

0.03

 Other

32,320

0.11

107

0.14

 Missing

8

0

0

0

Child sex

 Female (reference)

139,351

0.47

376

0.49

 Male

157,219

0.53

393

0.51

 Missing

0

0

0

0

Multiple births

 0

290,615

0.98

754

0.98

 1

5955

0.02

15

0.02

Birth order

 First (reference)

136,181

0.46

414

0.54

 Second

102,160

0.34

251

0.33

 Third+

58,041

0.20

101

0.13

 Missing

188

0

3

0

Age

 Mean

35.93

34.31

 SD

5.4

5.23

 Min

19

20

 Max

65

62

 Missing

8

0

0

0

(Other) children under five

 1 (reference)

174,582

0.59

451

0.59

 2

76,709

0.26

262

0.34

 3+

6064

0.02

26

0.03

 Missing

39,215

0.13

30

0.04

Marital status

 Not married

37,474

0.13

80

0.10

 Married

219,881

0.74

659

0.86

 Missing

39,215

0.13

30

0.04

Appendix B: Cox Proportional Hazards Model Without Time Interactions

 

Coef

Haz. rate

SE

z

p

Salary opportunity cost: negative

0.97

2.65

0.18

5.49

***

Salary opportunity cost: < 500 €

1.67

5.30

0.16

10.55

***

Salary opportunity cost: 500–1000 €

1.02

2.77

0.16

6.26

***

Salary opportunity cost: 1000–1500 €

0.19

1.21

0.18

1.07

 

Salary opportunity cost: 1500–2000 € (reference)

Salary opportunity cost: 2000–5000 €

− 0.30

0.74

0.15

− 1.96

.

Salary opportunity cost: 5000+ €

− 0.70

0.50

0.19

− 3.64

***

Salary growth in past 6 months: (0, 0.989]

− 0.02

0.98

0.12

− 0.14

 

Salary growth in past 6 months: (0.989, 0.998]

0.19

1.21

0.11

1.70

.

Salary growth in past 6 months: (0.998,1] (reference)

Salary growth in past 6 months: (1, 1.02]

0.03

1.03

0.12

0.29

 

Salary growth in past 6 months: (1.02, 5.59]

0.28

1.33

0.12

2.34

*

Monthly working hours: < 173

0.45

1.57

0.10

4.70

***

Monthly working hours: 173 (reference)

Monthly working hours: 173+

0.26

1.30

0.10

2.54

*

Size enterprize: small (< 50) or not applicable

0.23

1.25

0.17

1.30

 

Size enterprize: medium (50–200) (reference)

Size enterprize: large (200–1000)

0.00

1.00

0.16

0.02

 

Size enterprize: very large 1000+)

2.49

12.10

0.14

17.66

***

Size enterprize: missing

0.83

2.29

0.36

2.32

*

Nationality: Luxembourg (reference)

Nationality: France

− 0.07

0.93

0.11

− 0.65

 

Nationality: Portugal

− 0.40

0.67

0.14

− 2.86

***

Nationality: Belgium

0.02

1.02

0.12

0.15

 

Nationality: Germany

− 0.14

0.87

0.22

− 0.64

 

Nationality: other

− 0.03

0.97

0.12

− 0.25

 

Age

0.15

1.16

0.07

2.23

*

Age squared

− 0.00

1.00

0.00

− 2.31

*

Child sex: male

− 0.08

0.92

0.07

− 1.13

 

Multiple births

− 0.07

0.93

0.26

− 0.27

 

Birth order: first (reference)

Birth order: second

− 0.39

0.68

0.09

− 4.46

***

Birth order: third+

− 0.80

0.45

0.12

− 6.70

***

Children under five: 1 (reference)

Children under five: 2

0.37

1.45

0.08

4.44

***

Children under five: 3+

0.73

2.08

0.21

3.50

***

Children under five: missing

− 0.81

0.44

0.41

− 2.00

.

Marital status: missing

Coefficient not estimated due to perfect collinearity with missing category for the variable Children under five

 

Marital status: married

0.27

1.31

0.13

2.14

*

Likelihood ratio test = 1168 on 31 df, p < 0.001

n = 295468, number of events = 765, 1102 observations deleted due to missingness

  1. Significance codes: ***p < 0.001, **p < 0.01, *p < 0.05, .p  < 0.10

Appendix 3: Testing the Proportional Hazard Assumption

 

Rho

χ 2

Sig

Salary opportunity cost: negative

0.01

0.18

 

Salary opportunity cost: < 500 €

0.01

0.11

 

Salary opportunity cost: 500–1000 €

0.03

0.61

 

Salary opportunity cost: 1000–1500 €

− 0.01

0.09

 

Salary opportunity cost: 2000–5000 €

0.01

0.05

 

Salary opportunity cost: 5000+ €

0.02

0.45

 

Salary growth in past 6 months: (0.989, 0.998]

0.02

0.41

 

Salary growth in past 6 months: (0.998, 1]

− 0.02

0.28

 

Salary growth in past 6 months: (1, 1.02]

− 0.04

1.49

 

Salary growth in past 6 months: (1.02, 5.59]

− 0.08

4.32

*

Monthly working hours: < 173

− 0.03

0.91

 

Monthly working hours: 173+

− 0.05

2.39

 

Size enterprize: small (< 50) or not applicable

− 0.02

0.38

 

Size enterprize: large (200–1000)

− 0.01

0.12

 

Size enterprize: very large (1000+)

0.02

0.51

 

Size enterprize: missing

0.01

0.05

 

Nationality: France

− 0.06

2.80

.

Nationality: Portugal

0.12

11.53

***

Nationality: Belgium

− 0.00

0.00

 

Nationality: Germany

0.04

1.06

 

Nationality: other

0.15

18.02

***

Age

− 0.01

0.12

 

Age squared

0.01

0.07

 

Child sex: male

0.03

0.94

 

Multiple births

0.03

0.64

 

Birth order: second

0.00

0.00

 

Birth order: third+

0.01

0.08

 

Children under five: 2

− 0.08

4.47

*

Children under five: 3+

− 0.05

1.56

 

Children under five: missing

0.11

9.33

***

Marital status: missing

Coefficient not estimated due to perfect collinearity with missing category for the variable Children under five

 

Marital status: married

0.05

1.85

 

Global

 

102.59

***

  1. Significance codes: ***p < 0.001, **p < 0.01, *p < 0.05, .p  < 0.10
  2. Reference categories: Salary opportunity cost 1500–2000, Salary growth in past 6 months: (0, 0.989], Monthly working hours: 173 (Standard full-time contract), Size enterprize: medium (50–200), Nationality: Luxembourg, Child sex: Female, Birth order: First, Children under five: One, Marital status: Single. Significant coefficients suggest that the hazard rates for the groups compared by the different levels of the variable are not constant. To correct for this violation of the proportional hazards assumption, these variables are included in the model together with interactions with time

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Zhelyazkova, N., Ritschard, G. Parental Leave Take-Up of Fathers in Luxembourg. Popul Res Policy Rev 37, 769–793 (2018). https://doi.org/10.1007/s11113-018-9470-8

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  • DOI: https://doi.org/10.1007/s11113-018-9470-8

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