Economics and Finance Department
P. O. Box 27
Middle Tennessee State University
Murfreesboro, TN 37132
Information about this author at RePEc
NBER Working Papers and Publications
|August 2014||The Changing Benefits of Early Work Experience|
with Christopher J. Ruhm: w20413
We examine whether the benefits of high school work experience have changed over the last 20 years by comparing effects for the 1979 and 1997 cohorts of the National Longitudinal Survey of Youth. Our main specifications suggest that the future wage benefits of working 20 hours per week in the senior year of high school have fallen from 8.3 percent for the earlier cohort, measured in 1987-1989, to 4.4 percent for the later one, in 2008-2010. Moreover, the gains of work are largely restricted to women and have diminished over time for them. We are able to explain about five-eighths of the differential between cohorts, with most of this being attributed to the way that high school employment is related to subsequent adult work experience and occupational attainment.
Published: Charles L. Baum & Christopher J. Ruhm, 2016. "The Changing Benefits of Early Work Experience," Southern Economic Journal, . citation courtesy of
|December 2013||The Effects of Paid Family Leave in California on Labor Market Outcomes|
with Christopher J. Ruhm: w19741
Using data from the 1997 cohort of the National Longitudinal Survey of Youth (NLSY-97), we examine the effects of California's first in the nation government-mandated paid family leave program (CA-PFL) on mothers' and fathers' use of leave during the period surrounding child birth, and on the timing of mothers' return to work, the probability of eventually returning to pre-childbirth jobs, and subsequent labor market outcomes. Our results show that CA-PFL raised leave-taking by around 2.4 weeks for the average mother and just under one week for the average father. The timing of the increased leave use - immediately after birth for men and around the time that temporary disability insurance benefits are exhausted for women - is consistent with causal effects of CA-PFL. Rights to paid leave ...
Published: Charles L. Baum & Christopher J. Ruhm, 2016. "The Effects of Paid Family Leave in California on Labor Market Outcomes," Journal of Policy Analysis and Management, vol 35(2), pages 333-356. citation courtesy of
|September 2011||The Socio-Economic Causes of Obesity|
with Shin-Yi Chou: w17423
An increasing number of Americans are obese, with a body mass index of 30 or more. In fact, the latest estimates indicate that about 30% of Americans are currently obese, which is roughly a 100% increase from 25 years ago. It is well accepted that weight gain is caused by caloric imbalance, where more calories are consumed than expended. Nevertheless, it is not clear why the prevalence of obesity has increased so dramatically over the last 30 years.
We simultaneously estimate the effects of the various socio-economic factors on weight status, considering in our analysis many of the socio-economic factors that have been identified by other researchers as important influences on caloric imbalance: employment, physical activity at work, food prices, the prevalence of restaurants, cigare...
|August 2007||Age, Socioeconomic Status and Obesity Growth|
with Christopher J. Ruhm: w13289
The rapid growth in obesity represents a major public concern. Although body weight tends to increase with age, the evolution of obesity over the lifecycle is not well understood. We use longitudinal data from the National Longitudinal Survey of Youth to examine how body weight changes with age for a cohort moving through early adulthood. We further investigate how the age-obesity gradient differs with socioeconomic status (SES) and begin to examine channels for these SES disparities. Our analysis uncovers three main findings. First, weight rises with age but is inversely related to SES at given ages. Second, the SES-obesity gradient widens over the lifecycle, a result consistent with research examining other health outcomes such as overall status or specific medical conditions. Thi...
Published: Baum II, Charles L. & Ruhm, Christopher J., 2009.
"Age, socioeconomic status and obesity growth,"
Journal of Health Economics,
Elsevier, vol. 28(3), pages 635-648, May.
citation courtesy of