The Effects of the Minimum Wage on the Employment and Earnings of Youth

The employment and earnings effects of the minimum wage are estimated by parameterizing an hypothesized relationship between underlying market employment and wage relationships versus observed wage and employment distributions in the presence of a legislated minimum. If there had been no minimum during the 1973-78 period, we estimate that employment among out- of-school men 16 to 24 would have been approximately 4 percent higher than it in fact was. Among young men 16 to 19 employment would have been about 7 percent higher and among those 20 to 24, 2 percent higher. Employment among black youth 16 to 24 would have been almost 6 percent higher than it was, as compared with somewhat less than 4 percent for white youth. Although it is sometimes argued that the adverse employment effects of the minimum are offset by increased earnings, we find virtually no earnings effect. Had the minimum not been raised over the 1973-78 period, inflation would have greatly moderated the adverse employment effects of the minimum, with approximately two-thirds of the potential employment gains from elimination of the minimum attained. The weight of our evidence is inconsistent with a general increase in youth wage rates with increases in the real minimum. Our findings support the hypothesis that the effects of the minimum are concentrated on youth with sub-minimum market wage rates.

The Transition from School to Work: The Experiences of Blacks and Whites

Because much of the concern about youth unemployment is motivated by the large differences between the rates for blacks and whites, we have pursued our earlier work by analyzing separately for black and white youth the relationship between high school preparation and early labor force experience. We find no striking differences between the determinants of weeks worked by whites and non-whites upon graduation from high school. Although vocational training in high school bears little relationship to weeks worked upon graduation, hours worked while in high school bear a strong relationship to later employment for students and non-students, white and non-white. Academic performanceas measured by standardized test scores and high school class rank isalso positively related to later weeks worked by non-students, both white and non-white. Young persons find jobs in large part through friends and relatives or through direct application to employers orpossibly a combination of the two. Persons who are not looking forwork--and would then be classified as out of the labor force, according to standard definitions--are apparently quite distinct from personswho are looking for work. Those out of the labor force seem not tobe "discouraged workers" for the most part. Controlling for other individual attributes, non-whites are much more likely than whites to be in a post-secondary school full-time (although without controlling for these attributes the reverse is true). A large proportion of young men in school are also working part-time and a significant number are working full-time. A sizeable proportion of persons in post-secondary schools would be classified as unemployed based on official definitions. Indeed the unemployment rate among these full-time students is generally more than twice the rate among young men not inschool. Few high school graduates are chronically unemployed.

Discontinuous Distributions and Missing Persons: The Minimum Wage and Unemployed Youth

The effects of minimum wage legislation on the employment and wage rates of youth are estimated using a new statistical approach. We find that without the minimum, not only would the percent of out-of-school youth who are employed be 4 to 6 percent higher than it is, but also that these youth would earn more. In particular, the expected hourly earnings of youth with market wage rates below the 1978 minimum are 10 percent lower with the minimum than they would be without it. Thus, an effect of the minimum is to increase the concentration of non-employment among low-wage workers and to reduce their earnings relative to higher wage workers as well. The minimum wage accounts for possibly a third of the difference between the employment rates of black and white youth, according to our results. Our methodology is based on parameterization of the effect of the minimum on the distribution of "market" employment outcomes and market wage rates that would exist in the absence of the minimum. A concomitant of the estimation procedure is joint estimation of market wage and employment functions that would pertain if there were no minimum.

High School Preparation and Early Labor Force Experience

The relationship between high school training and work experience on the one hand and early labor force experience on the other are analyzed in the paper. In addition, the extent and nature of the persistence of early labor force experience is evaluated. The study is based on data for male youths from the National Longitudinal Study of the High School Class of 1972. While there appears to be no relationship between job-related training in high school and post-graduation weeks worked or wage rates, there is a strong relationship between hours worked while in high school and both weeks worked and wage rates in the first four years after graduation. High school class rank and test scores also are positively related to early weeks worked and wage rates in the labor force. It is also found that after controlling for individual specific characteristics of youth, there is little relationship between weeks worked in the first year after high school graduation and weeks worked four years later. And there is almost no relationship between initial wage rates and wage rates four years later, other than those attributable to measured and unmeasured individual specific characteristics. There is little persistence of early experience that cannot be attributed to heterogeneity among youth. There is, however, an effect of early work experience on later wage rates, although it is of modest magnitude in this sample of high school graduates.

Effect of supplemental phytonutrients on impairment of the flow-mediated brachialartery vasoactivity after a single high-fat meal

AbstractObjectivesOur objective was to determine if long-term daily administration of phytonutrient supplements can prevent the immediate adverse impact of a high-fat meal and increase the production of nitric oxide.BackgroundIngestion of a high-fat meal impairs flow-mediated vasodilation of the brachial artery for at least 4 h; however, co-ingestion of vitamin antioxidants or a green salad has been shown to prevent this effect.MethodsFlow-mediated brachial artery reactivity test (BART) both before and 3 h after a 900 calorie 50 g fat meal was evaluated in 38 healthy volunteers (age 36.4 ± 10.1 years). Subjects were randomized to four weeks of daily supplementation with a powdered fruit vegetable juice concentrate (Juice Plus [JP]) along with a complex supplement providing nutritional antioxidants and various herbal extracts (Vineyard [V]), JP alone, or a matching placebo. At three and four weeks, BART was repeated both before and after the high-fat meal. Serum nitrate/nitrite concentrations were measured at baseline and at four weeks.ResultsFour weeks of the JP-V combination blunted the detrimental effect of the high-fat meal (−47.5 ± 23.4% at baseline vs. −1.7 ± 9.7% at four weeks [p < 0.05]). Four weeks of JP alone had a similar beneficial effect (−45.1 ± 19.7% at baseline vs. −16.6 ± 10.3% at four weeks [p < 0.05]), whereas there was no substantial effect of the placebo. In the subjects treated with supplements, concentrations of serum nitrate/nitrite increased from 78 ± 39 to 114 ± 62 μm/l (p < 0.02).ConclusionsDaily ingestion of modest amounts of a fruit/vegetable juice concentrate with or without adjunctive phytonutrient supplementation can reduce the immediate adverse impact of high-fat meals on flow-mediated vasoactivity and increase nitrate/nitrite blood concentration

Prevalence of chronic respiratory disease in urban and rural Uganda.

OBJECTIVE: To determine the prevalence of chronic respiratory diseases in urban and rural Uganda and to identify risk factors for these diseases. METHODS: The population-based, cross-sectional study included adults aged 35 years or older. All participants were evaluated by spirometry according to standard guidelines and completed questionnaires on respiratory symptoms, functional status and demographic characteristics. The presence of four chronic respiratory conditions was monitored: chronic obstructive pulmonary disease (COPD), asthma, chronic bronchitis and a restrictive spirometry pattern. FINDINGS: In total, 1502 participants (average age: 46.9 years) had acceptable, reproducible spirometry results: 837 (56%) in rural Nakaseke and 665 (44%) in urban Kampala. Overall, 46.5% (698/1502) were male. The age-adjusted prevalence of any chronic respiratory condition was 20.2%. The age-adjusted prevalence of COPD was significantly greater in rural than urban participants (6.1 versus 1.5%, respectively; P?<?0.001), whereas asthma was significantly more prevalent in urban participants: 9.7% versus 4.4% in rural participants (P?<?0.001). The age-adjusted prevalence of chronic bronchitis was similar in rural and urban participants (3.5 versus 2.2%, respectively; P?=?0.62), as was that of a restrictive spirometry pattern (10.9 versus 9.4%; P?=?0.82). For COPD, the population attributable risk was 51.5% for rural residence, 19.5% for tobacco smoking, 16.0% for a body mass index <?18.5 kg/m2 and 13.0% for a history of treatment for pulmonary tuberculosis. CONCLUSION: The prevalence of chronic respiratory disease was high in both rural and urban Uganda. Place of residence was the most important risk factor for COPD and asthma

The future of North American trade policy: lessons from NAFTA

This repository item contains a single issue of the Pardee Center Task Force Reports, a publication series that began publishing in 2009 by the Boston University Frederick S. Pardee Center for the Study of the Longer-Range Future.This Task Force Report written by an international group of trade policy experts calls for significant reforms to address adverse economic, environmental, labor and societal impacts created by the 1994 North American Free Trade Agreement (NAFTA). The report is intended to contribute to the discussion and decisions stemming from ongoing reviews of proposed reforms to NAFTA as well as to help shape future trade agreements. It offers detailed proposals on topics including services, manufacturing, agriculture, investment, intellectual property, labor, environment, and migration. Fifteen years after NAFTA was enacted, there is widespread agreement that the trade treaty among the United States, Canada and Mexico has fallen short of its stated goals. While proponents credit the agreement with stimulating the flow of goods, services, and investment among the North American countries, critics in all three countries argue that this has not brought improvements in the standards of living of most people. Rather than triggering a convergence across the three nations, NAFTA has accentuated the economic and regulatory asymmetries that had existed among the three countries. [TRUNCATED

Type II phosphoinositide 5-phosphatases have unique sensitivities towards fatty acid composition and head group phosphorylation

AbstractThe catalytic properties of the type II phosphoinositide 5-phosphatases of Lowe's oculocerebrorenal syndrome, INPP5B, Synaptojanin1, Synaptojanin2 and SKIP were analysed with respect to their substrate specificity and enzymological properties. Our data reveal that all phosphatases have unique substrate specificities as judged by their corresponding KM and VMax values. They also possessed an exclusive sensitivity towards fatty acid composition, head group phosphorylation and micellar presentation. Thus, the biological function of these enzymes will not just be determined by their corresponding regulatory domains, but will be distinctly influenced by their catalytic properties as well. This suggests that the phosphatase domains fulfil a unique catalytic function that cannot be fully compensated by other phosphatases

Validation of the Saint George's Respiratory Questionnaire in Uganda.

INTRODUCTION: Chronic obstructive pulmonary disease (COPD) will soon be the third leading global cause of death and is increasing rapidly in low/middle-income countries. There is a need for local validation of the Saint George's Respiratory Questionnaire (SGRQ), which can be used to identify those experiencing lifestyle impairment due to their breathing. METHODS: The SGRQ was professionally translated into Luganda and reviewed by our field staff and a local pulmonologist. Participants included a COPD-confirmed clinic sample and COPD-positive and negative members of the community who were enrolled in the Lung Function in Nakaseke and Kampala (LiNK) Study. SGRQs were assembled from all participants, while demographic and spirometry data were additionally collected from LiNK participants. RESULTS: In total, 103 questionnaires were included in analysis: 49 with COPD from clinic, 34 community COPD-negative and 20 community COPD-positive. SGRQ score varied by group: 53.5 for clinic, 34.4 for community COPD-positive and 4.1 for community COPD-negative (p<0.001). The cross-validated c statistic for SGRQ total score predicting COPD was 0.87 (95% CI 0.75 to 1.00). SGRQ total score was associated with COPD severity (forced expiratory volume in 1 s per cent of predicted), with an r coefficient of -0.60 (-0.75, -0.39). SGRQ score was associated with dyspnoea (OR 1.05/point; 1.01, 1.09) and cough (1.07; 1.03, 1.11). CONCLUSION: Our Luganda language SGRQ accurately distinguishes between COPD-positive and negative community members in rural Uganda. Scores were correlated with COPD severity and were associated with odds of dyspnoea and cough. We find that it can be successfully used as a respiratory questionnaire for obstructed adults in Uganda