Has Family Leave Legislation Increased Leave-Taking?

In 1993, the federal government passed the Family and Medical Leave Act (FMLA), which gives eligible employees twelve weeks of job-protected unpaid leave from work per year to address family issues. Employees are eligible for family leave under the FMLA if they have worked for their employer for at least a year, accumulating at least 1,250 work hours. Employers are covered if they employ at least fifty workers. Prior to the FMLA’s passage, twelve states and the District of Columbia had passed their own family leave legislation mandating similar benefits. One potential use of family leave legislation is to give mothers leave from work after giving birth. One potential use of this legislation is to allow mothers leave from work after giving birth. In this Essay, I estimate the effects of family leave legislation on mothers’ leave-taking after giving birth. I examine the effects of family leave legislation as a natural experiment because state family leave laws (passed prior to the FMLA) vary both in scope and in dates of enforcement. I also identify the mothers who have the employment history to be eligible for the mandated leave benefits and who work for employers of sufficient size to be covered by their state’s legislation. My results suggest that family leave legislation has had little effect on leave-taking

Age, Socioeconomic Status and Obesity Growth

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. Third, a substantial portion of the SES "effect" is transmitted through race/ethnicity and the translation of advantaged family backgrounds during childhood into high levels of subsequent education. Conversely, little of the SES difference appears to be propagated through family income, marital status, number of children, or the set of health behaviors we control for. However, approximately half of the SES-weight correlation persists after the inclusion of controls, illustrating the need for further study of mechanisms for the gradient.

The Effects of Paid Family Leave in California on Labor Market Outcomes

Using data from the 1997 cohort of the National Longitudinal Survey of Youth (NLSY-97), we examine the effects of California's 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 three weeks for the average mother and approximately 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 are also associated with higher work and employment probabilities for mothers nine to twelve months after birth, possibly because they increase job continuity among those with relatively weak labor force attachments. We also find positive effects of California's program on hours and weeks of work during their child's second year of life and possibly also on wages

The Socio-Economic Causes of Obesity

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, cigarette smoking, cigarette prices and taxes, food stamp receipt, and urbanization. We use 1979- and 1997-cohort National Longitudinal Survey of Youth (NLSY) data, which allows us to compare the prevalence of obesity between cohorts surveyed roughly 25 years apart. Using the traditional Blinder-Oaxaca decomposition technique, we find that cigarette smoking has the largest effect: the decline in cigarette smoking explains about 2% of the increase in the weight measures. The other significant factors explain less.

Randomized, Double-blinded, Placebo-controlled Trial of Amoxicillin/Clavulanic Acid to Prevent Preterm Delivery in Twin Gestation

Objective: The objective of this study was to determine whether prophylactic treatment with oral broad-spectrum antimicrobial therapy improves pregnancy outcomes in twin gestations

The Changing Benefits of Early Work Experience

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

To Work or Not to Work: The Economics of a Mother's Dilemma

Utilizing linked vital statistics, administrative employer, and state welfare records, the analysis in this paper investigates the determinants of a woman's intermittent labor force decision at the time of a major life event: the birth of a child. The results indicate that both direct and opportunity labor market costs of exiting the workforce figure significantly into that decision. Further, the analysis reveals the importance of including information about the mother's prebirth job when making inferences about the role various demographics play in the intermittent labor force decision

Circulating protein biomarkers of pharmacodynamic activity of sunitinib in patients with metastatic renal cell carcinoma: modulation of VEGF and VEGF-related proteins

<p>Abstract</p> <p>Background</p> <p>Sunitinib malate (SUTENT^®) is an oral, multitargeted tyrosine kinase inhibitor, approved multinationally for the treatment of advanced RCC and of imatinib-resistant or – intolerant GIST. The purpose of this study was to explore potential biomarkers of sunitinib pharmacological activity via serial assessment of plasma levels of four soluble proteins from patients in a phase II study of advanced RCC: VEGF, soluble VEGFR-2 (sVEGFR-2), placenta growth factor (PlGF), and a novel soluble variant of VEGFR-3 (sVEGFR-3).</p> <p>Methods</p> <p>Sunitinib was administered at 50 mg/day on a 4/2 schedule (4 weeks on treatment, 2 weeks off treatment) to 63 patients with metastatic RCC after failure of first-line cytokine therapy. Predose plasma samples were collected on days 1 and 28 of each cycle and analyzed via ELISA.</p> <p>Results</p> <p>At the end of cycle 1, VEGF and PlGF levels increased >3-fold (relative to baseline) in 24/54 (44%) and 22/55 (40%) cases, respectively (P < 0.001). sVEGFR-2 levels decreased ≥ 30% in 50/55 (91%) cases and ≥ 20% in all cases (P < 0.001) during cycle 1, while sVEGFR-3 levels were decreased ≥ 30% in 48 of 55 cases (87%), and ≥ 20% in all but 2 cases. These levels tended to return to near-baseline after 2 weeks off treatment, indicating that these effects were dependent on drug exposure. Overall, significantly larger changes in VEGF, sVEGFR-2, and sVEGFR-3 levels were observed in patients exhibiting objective tumor response compared with those exhibiting stable disease or disease progression (P < 0.05 for each analyte; analysis not done for PlGF).</p> <p>Conclusion</p> <p>Sunitinib treatment in advanced RCC patients leads to modulation of plasma levels of circulating proteins involved in VEGF signaling, including soluble forms of two VEGF receptors. This panel of proteins may be of value as biomarkers of the pharmacological and clinical activity of sunitinib in RCC, and of angiogenic processes in cancer and other diseases.</p