Abstract

Theory suggests that the decision to return to employment after childbirth and the decision to breast-feed may be jointly determined. We estimate models of simultaneous equations for two different aspects of the relationship between maternal employment and breast-feeding using 1993-1994 data from the U.S. Food and Drug Administration’s Infant Feeding Practices Study. We first explore the simultaneous duration of breast-feeding and work leave following childbirth. We find that the duration of leave from work significantly affects the duration of breast-feeding, but the effect of breast-feeding on work leave is insignificant. We also estimate models of the daily hours of work and breast-feedings at infant ages 3 months and 6 months postpartum. At both times, the intensity of work effort significantly affects the intensity of breast-feeding, but the reverse is generally not found. Competition clearly exists between work and breast-feeding for many women in our sample.

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References

Amemiya, T. (
1979
).
The Estimation of a Simultaneous-Equation Tobit Model
.
International Economics Review
,
20
,
169
81
. 10.2307/2526423
American Academy of Pediatrics
(
1997
).
Breastfeeding and the Use of Human Milk
.
Pediatrics
,
100
,
1035
39
. 10.1542/peds.100.6.1035
Barber-Madden, R., Petschek, M.A., & Pakter, J. (
1987
).
Breast-feeding and the Working Mother: Barriers and Intervention Strategies
.
Journal of Public Health Policy
,
8
,
531
40
. 10.2307/3342277
Cohen, R., Mrtek, M., & Mrtek, R. (
1995
).
Comparison of Maternal Absenteeism and Infant Illness Rates Among Breast-Feeding and Formula-Feeding Women in Two Corporations
.
American Journal of Health Promotion
,
10
,
148
53
.
Desai, S., & Waite, L.J. (
1991
).
Women’s Employment During Pregnancy and After the First Birth: Occupational Characteristics and Work Commitment
.
American Sociological Review
,
56
,
551
66
. 10.2307/2096274
Duleep, H.O., & Sanders, S. (
1994
).
Empirical Regularities Across Cultures: The Effect of Children on Women’s Work
.
Journal of Human Resources
,
29
,
328
47
. 10.2307/146101
Fein, S.B., & Roe, B. (
1998
).
The Effect of Work Status on Initiation and Duration of Breast-feeding
.
American Journal of Public Health
,
88
,
1042
46
. 10.2105/AJPH.88.7.1042
Ford, K., & Labbock, M. (
1990
).
Who is Breast-feeding? Implications of the Associated Social and Biological Variables for Research on the Consequences of Method of Infant Feeding
.
American Journal of Clinical Nutrition
,
52
,
451
56
.
Giugliani, E.R., Caiaffa, W.T., Vogelhut, J., Witter, F.R., & Perman, J.A. (
1994
).
Effect of Breast Feeding Support From Different Sources on Mother’s Decisions to Breast Feed
.
Journal of Human Lactation
,
10
(
3
),
157
61
. 10.1177/089033449401000310
Greenstein, T. (
1989
).
Human Capital, Marital and Birth Timing, and the Postnatal Labor Force Participation of Married Women
.
Journal of Family Issues
,
10
,
359
82
. 10.1177/019251389010003004
Grossman, L.K., Fitzsimmons, S.M., Larsen-Alexander, J.B., Sachs, L., & Harter, C. (
1990
).
The Infant Feeding Decision in Low and Upper Income Women
.
Clinical Pediatrics
,
29
(
1
),
30
37
. 10.1177/000992289002900105
Hewat, R.J., & Ellis, D.J. (
1985
).
Similarities and Differences Between Women Who Breast-feed for Short and Long Duration
.
Midwifery
,
2
,
37
43
. 10.1016/S0266-6138(86)80070-5
Hills-Bonczyk, S.G., Avery, M.D., Savik, K., Potter, S., & Duckett, L. (
1993
).
Women’s Experiences With Combining Breast-feeding and Employment
.
Journal of Nurse Midwifery
,
38
(
5
),
257
66
. 10.1016/0091-2182(93)90104-O
Joesch, J. (
1995
).
Paid Leave and the Timing of Women’s Employment Surrounding Birth
.
Seattle, WA
:
Center for Studies in Demography and Ecology, University of Washington
.
Klerman, J.A., & Leibowitz, A. (
1994
).
The Work-Employment Distinction Among New Mothers
.
Journal of Human Resources
,
29
,
277
303
. 10.2307/146099
Joesch, J. 1995. “Maternity Leave Before the Family Leave Act.” RAND Working Paper, Santa Monica, CA.
Kurinji, N., Shiono, P.H., Ezrine, S.F., & Rhoads, G.G. (
1989
).
Does Maternal Employment Affect Breast-feeding?
.
American Journal of Public Health
,
79
,
1247
50
. 10.2105/AJPH.79.9.1247
Kurinji, N., Shiono, P.H., & Rhoads, G.G. (
1988
).
Breast-feeding Incidence and Duration in Black and White Women
.
Pediatrics
,
81
,
365
71
.
Lee, M. (
1995
).
A Semi-Parametric Estimation of Simultaneous Equations With Limited Dependent Variables: A Case Study of Female Labor Supply
.
Journal of Applied Econometrics
,
10
,
187
200
. 10.1002/jae.3950100207
Leibowitz, A., & Klerman, J.A. (
1995
).
Explaining Changes in Married Mothers’ Employment Over Time
.
Demography
,
32
,
365
78
. 10.2307/2061686
Lindberg, L.D. (
1996
).
Women’s Decisions About Breastfeeding and Maternal Employment
.
Journal of Marriage and the Family
,
58
,
239
51
. 10.2307/353392
Lindberg, L.D. (
1996
).
Trends in the Relationship Between Breast-feeding and Postpartum Employment in the U.S.
.
Social Biology
,
43
(
3–4
),
191
202
.
Nakamura, A., & Nakamura, M. (
1994
).
Predicting Female Labor Supply: Effects of Children and Recent Work Experience
.
Journal of Human Resources
,
29
,
304
27
. 10.2307/146100
Nutrition During Lactation
. (
1991
).
Washington, DC
:
National Academy Press
.
Olsen, R. (
1994
).
Fertility and the Size of the U.S. Labor Force
.
Journal of Economic Literature
,
31
(
1
),
60
100
.
Peterson, C., & DaVanzo, J. (
1992
).
Why are Teenagers in the United States Less Likely to Breastfeed than Older Women?
.
Demography
,
29
,
431
50
. 10.2307/2061827
Updated Breast-feeding Trends: 1987–1995
. (
1996
).
Cleveland
:
Ross Laboratories
.
Ryan, A.S., & Martinez, G.A. (
1989
).
Breast-feeding and the Working Mother: A Profile
.
Pediatrics
,
83
,
524
31
.
Ryan, A.S., Pratt, W.F., Wysong, J.L., Lewandowski, G., McNally, J.W., & Krieger, F.W. (
1991
).
A Comparison of Breast-feeding Data From the National Surveys of Family Growth and the Ross Laboratories Mothers Surveys
.
American Journal of Public Health
,
81
,
1049
52
. 10.2105/AJPH.81.8.1049
Ryan, A.S., Rush, D., Krieger, F.W., & Lewandowski, G. (
1991
).
Recent Declines in Breast-Feeding in the United States
.
Pediatrics
,
88
,
719
27
.
Ryan, A.S., Wysong, J.L., Martinez, G.A., & Simon, S.D. (
1990
).
Duration of Breast-feeding Patterns Established in the Hospital, Influencing Factors
.
Clinical Pediatrics
,
29
,
99
107
. 10.1177/000992289002900207
Shapiro, D., & Mott, F.L. (
1994
).
Long-Term Employment and Earnings of Women in Relation to Employment Behavior Surrounding the First Birth
.
Journal of Human Resources
,
29
,
248
75
. 10.2307/146098
Shellenbarger, S. 1996, December 18. “Work and Family.” The Wall Street Journal, p. B1.
U.S. Department of Health and Human Services (U.S. DHHS). 1985. Follow-up Report: The Surgeon General’s Workshop on Breastfeeding and Human Lactation. DHHS Publication No. HRS-D-MC 85-2, Washington, DC.
Healthy People 2000
. (
1990
).
Washington, DC
:
U.S. Public Health Service
.
Nutrition Action Themes for the United States: A Report in Response to the International Conference on Nutrition
. (
1996
).
Washington, DC
:
U.S. Department of Agriculture, Center for Nutrition Policy and Promotion
.
Vella, F. (
1993
).
A Simple Estimator for Simultaneous Models With Censored Endogenous Regressors
.
International Economic Review
,
34
,
441
57
. 10.2307/2526924