the effects of motherhood on wages and labor force participation: evidence for bolivia, brazil,...
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The effects of motherhood on wages and labor force participation: evidence for Bolivia,
Brazil, Ecuador and Peru
Claudia Piras and Laura Ripani
[email protected] and [email protected]
SDS / WID
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Schedule Introduction
– Empirical issues about gender wage differentials
– Motivation
– Literature Review
– Objective of this paper
Data– Data: why these four countries?
– Sample restrictions
Labor Force Participation by Motherhood Status The effect of Motherhood on Wages Preliminary conclusions
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Empirical issues about gender wage differentials
Empirical finding 1: Narrowing of the gender wage gap in the US and Latin America in the last decades.
Empirical finding 2: In general, women have less labor market experience than men and this fact played a big role in the explanation of gender wage differentials.
One of the reasons for having less labor market experience might be that women face more responsibilities in terms of childcare and nurturing: motherhood takes women away from the labor market or it makes them work part-time.
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Motivation From what we said before, the main motivation for
this study is the importance of this question for its relevance for larger issues of gender inequality.
Most women are mothers, and a main aspect of intra-household gender division is assigning most child-rearing responsibilities to women.
Therefore, any “price” of being a mother will affect most women and contribute to gender inequality.
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Motivation On the other hand, if well-reared children are “public
goods”, then the motherhood penalty is of theoretical and policy interest for two reasons. First, there exist an equity problem since mothers are not paid for their contribution to society. Second, the society must have a future problem of optimal level of care of future generations of responsible citizens.
Finally, if mothers are the only source of financial support in a family, we have an additional problem related to the lack of resources for their children’s development.
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Literature Review US: women with children earn lower wages than
those who do not have any children, according to a number of studies (Hill 1979; Korenman and Neumark 1992, 1994; Waldfogel 1997, 1998; Lundberg and Rose 1999; England and Budig 1999).
There exists also a child penalty in the UK (Harkness and Waldfogel 1997), in Australia (Baxter 1992) and in Germany (Harkness and Waldfogel 1997).
Even after controlling for experience, some wage differential remains...
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Child penalty: five mechanisms1) Mothers spend more time at home caring for children,
interrupting their experience and seniority, or at least interrupting full-time employment (human capital or labor supply explanation)
2) Mothers may choose jobs that trade off higher wages for some aspect of “mother-friendliness”.
3) Mothers exert less effort (per hour) on the job to conserve effort for household production, and this would affect wages through productivity.
4) Employers discriminate against mothers, treating them worse than other women.
5) Causal effects of having children may be spurious. There is heterogeneity in who selects into motherhood on unmeasured variables (i.e. career ambition) that also affect earnings.
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Objective
The effect of being a mother on wages might differ substantially in Latin American countries compared to developed countries.
The objective of this paper is to calculate the effects of motherhood on wages and labor force participation for four Latin American countries. The countries chosen were Peru, Bolivia, Ecuador and Brazil.
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Data: Why these four countries? Household surveys for each country:
- 1999 Pesquisa Nacional para Amostra de Domicilios for Brazil
- 1998 Encuesta de Condiciones de Vida for Ecuador
- 1999 Encuesta Continua de Hogares for Bolivia
- 2000 Encuesta Nacional de Hogares for Peru
All these surveys are nationwide. Why these four countries?
Only in these countries’ surveys it is clearly specified who the mothers of the kids living in the household are. There is also information about the fertility history of women 15 to 49 (or 50) years old as well as other socioeconomic characteristics.
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Sample restrictions– Labor Force Participation analysis: women
14 to 45 years old. The geographical coverage is restricted to urban population only.
– Wage regression analysis: we restrict the sample to those earning a salary at their job and those working more than 1 hour per day but not more than 16 hours per day. Self-employed workers are not included for this analysis given the difficulties in separating returns to labor and capital.
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Labor Force Participation (LFP) Analysis
The approach of this section is based on a descriptive set of labor force participation rates and total hours worked, divided by certain women characteristics (marital status, age groups, etc) .
Why do we have this approach and not a regression analysis?
Skepticism regarding the causal interpretation of associations between fertility and labor supply arises in part from the fact that there are strong theoretical reasons to believe that fertility and labor supply are jointly determined (endogeneity problem).
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Married - NM
Married - M 0-6
Unmarried - NM
Unmarried - M 0-6
FLFP by Marital and Motherhood StatusBolivia
0.00
0.20
0.40
0.60
0.80
1.00
14-25 26-35 36-45
FLFP by Marital and Motherhood StatusEcuador
0.00
0.20
0.40
0.60
0.80
1.00
14-25 26-35 36-45
FLFP by Marital and Motherhood StatusPeru
0.00
0.20
0.40
0.60
0.80
1.00
14-25 26-35 36-45
LFP by age group, marital and motherhood status
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Brazil FLFP by Age Group
0.00
0.20
0.40
0.60
0.80
14-25 26-35 36-45
NM M 0-6
LFP by age group for Brazil and motherhood status (no information about marital status)
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FLFP by # children <6Bolivia
0
20
40
60
80
100
0 1 >=2
14-25
26-35
36-45
FLFP by # children <6Brazil
0
20
40
60
80
0 1 >=2
14-25
26-35
36-45
FLFP by # children <6Ecuador
0
20
40
60
80
0 1 >=2
14-25
26-35
36-45
FLFP by # children <6Peru
010203040506070
0 1 >=2
14-25
26-35
36-45
LFP by age group and number of children
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Brazil FLFP by occupational category
0%
20%
40%
60%
80%
100%
NM M 0-6 M 7-12 M 13-18
FAMILIAR NOREMUNERADO
EMPLEADO
CTA PROPIA
PATRON
Bolivia FLFP by occupational category
0%
20%
40%
60%
80%
100%
NM M 0-6 M 7-12 M 13-18
FAMILIAR NOREMUNERADO
EMPLEADO
CTA PROPIA
PATRON
Ecuador FLFP by occupational category
0%
20%
40%
60%
80%
100%
NM M 0-6 M 7-12 M 13-18
FAMILIAR NOREMUNERADO
EMPLEADO
CTA PROPIA
PATRON
Peru FLFP by occupational category
0%
20%
40%
60%
80%
100%
NM M 0-6
FAMILIAR NOREMUNERADO
EMPLEADO
CTA PROPIA
PATRON
LFP by Occupational Category and Motherhood Status
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Brazil - Self employment
0
5
10
15
20
Head of household Non-head ofhousehold
NM
M 0-6
Bolivia - Self employment
0
20
40
60
80
100
Head of household Non-head ofhousehold
NM
M 0-6
Ecuador - Self employment
05
101520253035
Head of household Non-head ofhousehold
NM
M 0-6
Peru - Self employment
0
10
20
30
40
50
Head of household Non-head ofhousehold
NM
M 0-6
Self-employment by Motherhood Status
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Total Hours Worked per Week
35373941434547
Bolivia Brazil Ecuador Peru
NM
M 0-6
M 7-12
M 13-18
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Hours Worked by Occupational Category
34
36
38
40
42
44
CTA PROPIA EMPLEADO
NM M 0-18
BrazilHours Worked by Occupational Category
40
42
44
46
48
CTA PROPIA EMPLEADO
NM M 0-18
Bolivia
Hours Worked by Occupational Category
3032343638404244464850
CTA PROPIA EMPLEADO
NM M 0-18
EcuadorHours Worked by Occupational Category
30
35
40
45
CTA PROPIA EMPLEADO
NM M 0-6
Peru
Hours worked by occupational category and motherhood
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Bolivia - FLFP in the Public Sector
0.00
0.05
0.10
0.15
0.20
0.25
0.30
14-25 26-35 36-45
Non Mothers Mothers 0-18
Brazil - FLFP in the Public Sector
0.00
0.05
0.10
0.15
0.20
14-25 26-35 36-45
Non Mothers Mothers 0-18
Ecuador - FLFP in the Public Sector
0.00
0.05
0.10
0.15
0.20
14-25 26-35 36-45
Non Mothers Mothers 0-18
Peru - FLFP in the Public Sector
0.000.020.040.060.080.100.120.140.16
14-25 26-35 36-45
Non Mothers Mothers 0-18
LFP by Public Sector and Motherhood Status
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The effect of motherhood on wages
– First specification:
lnWi = 1 + 1 (mother children less than 7)i + 2 (mother children between 7 and 12)i + 3 (mother children between 13 and 18)i + 1 Xi + i
– Second specification:
lnWi = 1 + 1 (one child)i + 1 (two or more children)i + 1 Xi + i
– Third specification:
lnWi = 2 + 1 (number of children 0 to 6)i + 2 (number of children 7 to 12)i + 3 (number of children 13 to 18)i + 2 Xi + i
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Model The dependent variable is the natural logarithm
of the hourly wage in the respondent’s current job.
For this presentation, we are going to show the results for a model that controls for age, age squared, level of education (in years), level of education squared, tenure (in months), tenure squared, marital status, head of household status, regional location, ethnicity, part-time status, public sector status, industry dummy variables and occupational dummy variables.
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Model: caveat Lack of information about actual work experience.
The only variable available is tenure in the current job.
Anderson, Binder and Krause (2003) show that the gap between potential experience (age – schooling – 6) and actual work experience is three years for mothers compared with only 1-1/2 months for non-mothers, using a panel data set for the US.
Problem for this paper: the lack of information on actual work experience can create a bias in our motherhood coefficients. Experiment for Brazil.
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Descriptive Statistics Mothers are older than non-mothers, with differences
of 7 to 8 years. The number of children aged less than 18 years old is
1.8 to 2.2 children. The average hourly wage is always higher for mothers. Regarding levels of education, we did not find
statistically significant differences among mothers and non-mothers with the exception of Brazil, where mothers tend to be less educated than mothers in average.
Mothers are more likely to be married, as we might have expected.
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Descriptive Statistics
Potential experience and tenure are always smaller for non-mothers, basically because of the age difference among mothers and non-mothers.
Mothers are more likely to work in the public sector.
Mothers are more likely to be heads of household for Bolivia and Ecuador with around 17% of mothers being head of household, but not for Brazil, where only 2% are heads of household.
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BOLIVIA ECUADOR PERU BRAZILMother of children less orequal to 6 years old
-0.076(0.085)
-0.074(0.049)
-0.114**(0.056)
0.066**(0.007)
Mother of children between 7and 12 years old
-0.117(0.081)
0.067(0.051)
- 0.026**(0.008)
Mother of children between 13and 18 years old
0.177*(0.099)
0.020(0.063)
- 0.002(0.010)
R-squared 0.518 0.495 0.532 0.649
Regression Results
One child 0.025(0.105)
0.011(0.069)
-0.109*(0.057)
0.080**(0.008)
Two or more children -0.078(0.104)
0.023(0.066)
-0.142(0.122)
0.081**(0.009)
R-squared 0.513 0.494 0.532 0.649
Number of children less orequal to 6 years old
-0.073(0.056)
-0.041(0.034)
-0.085*(0.046)
0.044**(0.005)
Number of children between 7and 12 years old
-0.043(0.057)
0.016(0.036)
- 0.011(0.006)
Number of children between13 and 18 years old
0.090(0.058)
-0.021(0.042)
- 0.001(0.006)
R-squared 0.517 0.495 0.531 0.649Number of observations 374 1202 782 28,606
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By age groups Age groups: 14-25, 26-35, 36-45 Bolivia: youngest group of mothers has a penalty for
having children less than 6 years old in terms of wages (38.6% smaller wages than non-mothers)
Ecuador: positive effect can be seen now for the oldest group of mothers if they have children 7 to 12 years old (the hourly wage differential is 28.6% more than non-mothers).
Peru: penalties appear in the middle-aged group (18.5% smaller wages, almost double of the penalty found for the pooled sample).
Brazil: significant effects disappear for the oldest group of mothers
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By educational levels Educational levels: less than High School, High School
or more. Bolivia: premium for having children 13 to 18 years old
only for educated mothers. This premium is equal to 26.4% more for mothers than non-mothers
Ecuador: for the less educated group of mothers, there is a penalty of 15.1% for having children less than 6 years old as well as a premium of 17.9% for having children 7 to 12 years old
Peru: having children less than 6 years old has a negative impact on wages (hourly wage differential of 11% less for mothers) if you have High School or more
Brazil: similar results for both groups
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By public or private sector Bolivia: for those working in the public sector
there is a 15.4% premium for those who have children 13-18, whereas there is a penalty of 11.5% for having children 7-12 years old
Ecuador: no significant results Peru: negative impact on wages for having two
or more children for private sector workers. Having more children less than 6 years old also shows a negative effect on wages for those who work in the private sector
Brazil: similar results for both groups
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Conclusions Studies in developed countries regularly observe a
wage penalty for working mothers.
In this paper we explore the effects of motherhood on wages and labor force participation for four Latin American countries.
LFP: The results of this paper show that mothers with children less than 6 years old participate less than those with no children, except for single mothers. Mothers are over-represented among the self-employed and work fewer hours than non-mothers if employed in the formal sector.
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Conclusions WAGES: Conversely from the evidence found in
the US, UK, Australia and Germany, our results for Latin America do not show a clear impact of being a mother on wages. While for Peru there exists a penalty for mothers of children less than 6 years old, for Bolivia and Brazil we find premiums for being a mother. For Ecuador there are no significant effects.
These very heterogeneous effects are further investigated looking at samples divided by public and private sector, by educational level and by age groups. We find that wage penalties and premiums are not borne equally among all mothers.
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Sample restrictions
Bolivia Ecuador Peru Brazil
Sample size 13,023 26,129 19,957 352,229
Only women 6,541 13,112 10,057 180,570Earning a wage 1163 3,214 2,441 50,640Only urban areas 961 2,142 1,864 45,472Not self-employed 484 1,462 947 36,758Age between 14 and 45 408 1,227 808 30,596Working more than 1 hourper day but less than 16hours per day
402 1,213 794 30,388
Final sample 374 1,202 782 28,606
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Regressions for third model and first specificationBOLIVIA ECUADOR PERU BRAZIL
Mother of children 0 to 6years old
-0.077(0.086)
-0.075(0.050)
-0.114*(0.056)
0.066*(0.008)
Mother of children 7 to12 years old
-0.117(0.082)
0.068(0.051)
- 0.026*(0.008)
Mother of children 13 to18 years old
0.178*(0.100)
0.020(0.063)
- 0.002(0.010)
Years of education -0.031(0.033)
0.040*(0.023)
0.041(0.046)
-0.034*(0.003)
Years of educationsquared
0.004*(0.002)
0.001(0.001)
0.002(0.002)
0.007*(0.000)
Tenure 0.019(0.018)
0.002*(0.000)
0.015*(0.008)
0.003*(0.000)
Tenure squared -0.001(0.001)
0.000*(0.000)
0.000*(0.000)
0.000*(0.000)
Married 0.162(0.108)
0.100*(0.053)
0.148*(0.058)
-
Head 0.206*(0.111)
0.199*(0.065)
-0.099(0.121)
0.077*(0.009)
Ethnicity -0.179*(0.073)
0.213*(0.071)
0.071(0.108)
-0.090*(0.007)
Part-time 0.329*(0.101)
0.363*(0.115)
0.296*(0.058)
-
Public 0.244*(0.111)
0.313*(0.075)
0.194*(0.075)
0.091*(0.011)
Note: age, age squared, regions, occupations and industries are excluded from this table